WO2020019275A1 - 一种数据传输方法及其相关装置 - Google Patents

一种数据传输方法及其相关装置 Download PDF

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Publication number
WO2020019275A1
WO2020019275A1 PCT/CN2018/097322 CN2018097322W WO2020019275A1 WO 2020019275 A1 WO2020019275 A1 WO 2020019275A1 CN 2018097322 W CN2018097322 W CN 2018097322W WO 2020019275 A1 WO2020019275 A1 WO 2020019275A1
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Prior art keywords
channel
uplink
downlink
data
target service
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PCT/CN2018/097322
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English (en)
French (fr)
Inventor
张亚凡
李卫华
郭湛
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华为技术有限公司
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Priority to PCT/CN2018/097322 priority Critical patent/WO2020019275A1/zh
Publication of WO2020019275A1 publication Critical patent/WO2020019275A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a data transmission method and related devices.
  • WLAN wireless local area networks
  • STA site
  • AP access points
  • a dual link is used as an example.
  • Two STAs are connected to one STA.
  • the two APs may be two virtual sites (virtual access points, VAPs) in one physical AP, or Are two separate physical APs.
  • VAPs virtual access points
  • each channel needs to be responsible for uplink and downlink data bearers.
  • STA and AP will perform carrier sense multiple access (CSMA) / enhanced distributed channel access (EDCA) backoff, air interface collision may occur after data transmission, if air interface occurs Collision, the data transmission fails and needs to be retransmitted.
  • CSMA carrier sense multiple access
  • EDCA enhanced distributed channel access
  • air interface collision may occur after data transmission, if air interface occurs Collision, the data transmission fails and needs to be retransmitted.
  • CSMA carrier sense multiple access
  • EDCA enhanced distributed channel access
  • the embodiments of the present application provide a data transmission method and a related device, which are used to reduce the possibility of uplink-downlink data collision, thereby reducing the delay of data transmission.
  • an embodiment of the present application provides a data transmission method, which specifically includes: a data transmission device, based on an actual bearer capacity of each of the N channels and a data amount of data to be carried by a target service, from the N channels Specify an uplink channel and / or a downlink channel for the target service, wherein the N channels are the channels between the station STA and the access point AP, and each of the N channels has an uplink transmission and a downlink transmission.
  • the to-be-carried data includes: uplink data and downlink data, where N is an integer greater than 1. Then, the uplink data is transmitted through the uplink channel, and / or the downlink data is transmitted through the downlink channel.
  • At least a part of a plurality of duplex channels is designated as an uplink channel and / or a downlink channel according to the amount of data to be carried by the target service.
  • the uplink channel is only used to transmit uplink data
  • the downlink channel is only used to transmit uplink data. It is used to transmit downlink data, which can avoid data collision on the uplink / downlink channels, which can reduce transmission delay.
  • an uplink channel and / or a downlink are respectively specified for the target service from the N channels.
  • the channels include: the data transmission device determines multiple candidate channel combinations, where each candidate channel combination includes at least one uplink candidate channel and / or at least one downlink candidate channel, and the uplink candidate channel is among the N channels.
  • the channel whose actual uplink carrying capacity is greater than the amount of data of the uplink data, and the downlink candidate channel is the channel of the N channels whose actual downlink carrying capacity is greater than the amount of data of the downlink data;
  • a target channel combination is determined in the candidate channel combination, and the target channel combination includes the uplink channel and / or the downlink channel.
  • the N is greater than or equal to 3
  • the target service is the service with the highest priority among the services to be carried.
  • the method further includes: excluding the N channel from the uplink channel and / or the downlink channel
  • the other channels are determined as target channels, and the target channels are used to transmit data to be carried corresponding to services other than the target service among the services to be carried, and the target channels can perform uplink data transmission and / or downlink data transmission.
  • channels other than the uplink channel and the downlink channel are also determined, which improves the compatibility of the solution.
  • determining the target channel combination from the candidate channel combinations according to the matching degree of the service requirements with the channels includes: determining a data transmission delay corresponding to each candidate channel combination; and then transmitting the data.
  • the candidate channel combination corresponding to the data transmission delay with the smallest median delay is determined as the target channel combination.
  • the actual uplink carrying capacity corresponding to the channel; the Y DL represents the actual downlink carrying capacity corresponding to the downlink candidate channel in the candidate channel combination; the correlation and the median correlation and maximum correlation corresponding to each candidate channel combination
  • the corresponding candidate channel combination is determined as the target channel combination.
  • This implementation manner specifically introduces another manner of determining a target channel combination, which enriches specific implementation methods.
  • the candidate channel combination includes a first candidate channel combination and a second candidate channel combination
  • X UL-Re represents the For uplink data
  • the X DL-Re represents the downlink data
  • the Y UL represents the actual uplink bearer capacity corresponding to the uplink candidate channel in the candidate channel combination
  • the Y DL represents the downlink candidate in the candidate channel combination
  • the actual downlink bearer capacity corresponding to the channel; this implementation method specifically introduces another way to determine the target channel combination, which enriches the specific implementation methods.
  • an uplink channel and / or a downlink are respectively specified for the target service from the N channels.
  • the method further includes: obtaining a service identification ID of the target service; obtaining a data amount of the theoretical upstream data of the target service and a data amount of the downstream theoretical data of the target service according to a preset database and the service ID; And the priority of the target service; determining the data amount of the uplink data according to the data amount of the uplink theoretical data and the priority; and / or determining the data of the downlink data according to the data amount of the downlink theoretical data and the priority the amount.
  • This implementation manner specifically introduces a way to obtain the data amount of the uplink channel and / or the data amount of the downlink channel, which saves the storage space of the data transmission device.
  • an uplink channel and / or a downlink are respectively specified for the target service from the N channels.
  • the method further includes: obtaining a maximum bearing capacity of each of the N channels, the maximum bearing capacity including an uplink maximum bearing capacity and a downlink maximum bearing capacity; obtaining an uplink channel environment and a downlink channel environment of the channel; The uplink maximum bearer capacity and the uplink channel environment determine the actual uplink bearer capacity of the channel, and the downlink actual bearer capacity of the channel is determined according to the maximum bearer capacity and the downlink channel environment.
  • This implementation manner specifically introduces a way to obtain a data amount of data to be carried, and saves a storage space of a data transmission device.
  • the method before transmitting the uplink data through the uplink channel, and / or before transmitting the downlink data through the downlink channel, the method further includes: sending channel transmission information to a peer end, the peer end For the STA or the AP, the channel transmission information indicates that the channel is an uplink channel or a downlink channel.
  • This implementation manner also needs to send a channel to transmit information to the peer end, which provides a flexible information interaction mode and improves the flexibility of implementation.
  • the target service includes a first target service and a second target service
  • the STA includes a first STA and a second STA
  • the first target service is a service between the first STA and the AP.
  • the second target service is a service between the second STA and the AP; when the frequency resource corresponding to the uplink channel and / or the downlink channel specified for the first target service is the same as that of the second target service
  • the first STA and the second STA perform uplink data transmission and / or downlink data transmission in an orthogonal frequency division multiplexing OFDM manner.
  • data transmission is performed in a multiplexed manner, which can save channel resources and avoid collisions between uplink data and / or downlink data at the same time.
  • the target service includes a first target service and a second target service
  • the STA includes a first STA and a second STA
  • the first target service is a service between the first STA and the AP.
  • the second target service is a service between the second STA and the AP; when the time-frequency resource corresponding to the uplink channel and / or the downlink channel designated for the first target service is the same as the second target service
  • the first STA and the second STA perform spatial data multiplexing MU-MIMO for uplink data transmission and / or downlink data transmission.
  • data transmission is performed in a multiplexed manner, which can save channel resources and avoid collisions between uplink data and / or downlink data at the same time.
  • an uplink channel and / or a downlink are respectively specified for the target service from the N channels.
  • the method further includes: sending a management frame or a control frame in the uplink channel and / or the downlink channel according to a preset period. This implementation manner can prevent a third-party device from occupying an uplink channel and / or a downlink channel, and reduce the delay of data transmission.
  • the method further includes: adjusting configuration parameters of the MAC layer of the media access control. This implementation manner can reduce the waiting delay of data transmission, thereby reducing the delay of data transmission.
  • an embodiment of the present application provides a data transmission device, where the data transmission device is configured to execute the first aspect or a method in any possible implementation manner of the first aspect.
  • the data transmission apparatus includes a module for executing the first aspect or the method in any possible implementation manner of the first aspect.
  • an embodiment of the present application provides a data transmission system.
  • the data transmission system includes a station STA and an access point AP. There are N channels between the STA and the AP. The N is an integer greater than 1.
  • the data transmission system is configured to perform the method in the first aspect or any possible implementation of the first aspect.
  • the computer-readable storage medium stores instructions that, when run on a computer, cause the computer to execute the methods in the above aspects.
  • Yet another aspect of the present application provides a computer program product containing instructions that, when run on a computer, causes the computer to perform the methods of the above aspects.
  • the STA or the AP respectively obtains the target service from the N channels according to the actual bearing capacity of each of the N channels and the data amount of data to be carried of the target service.
  • the data to be carried includes: uplink data and downlink data, where N is an integer greater than 1, and then the uplink data is transmitted through the uplink channel, and / or the downlink data is transmitted through the downlink channel.
  • the uplink channel can only be used to transmit uplink data corresponding to the uplink data, but not to transmit downlink data corresponding to the downlink data, so the STA can directly send uplink data to the AP through the determined uplink channel without waiting.
  • the AP completes sending downlink data, which can reduce transmission delay and avoid data collision on the uplink channel.
  • the downlink channel can only be used to transmit the downlink data corresponding to the downlink data. It is not used to transmit the uplink data.
  • the AP can directly send the uplink data to the STA through the determined downlink channel. There is no need to wait for the STA to finish sending the uplink data. Reduce the transmission delay and avoid data collision on the downlink channel.
  • FIG. 1 is a schematic diagram of an application scenario in the prior art
  • FIG. 2a is a schematic structural diagram of a data transmission device according to an embodiment of the present application.
  • 2b is a schematic diagram of an application scenario of a data transmission method in an embodiment of the present application.
  • 2c is a schematic diagram of another application scenario of a data transmission method according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a data transmission method according to an embodiment of the present application.
  • 4a is a schematic diagram of an application scenario of a data transmission method in an embodiment of the present application.
  • 4b is a schematic diagram of a display interface of a data transmission method according to an embodiment of the present application.
  • 4c is a schematic diagram of an application scenario of a data transmission method in an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a data transmission device according to an embodiment of the present application.
  • FIG. 6 is another schematic structural diagram of a data transmission device according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a data transmission system in an embodiment of the present application.
  • the embodiments of the present application provide a data transmission method and a related device, which are used to reduce the possibility of uplink and downlink data collision and reduce the delay of data transmission.
  • Actual carrying capacity indicates the actual throughput or actual carrying capacity of the channel
  • the amount of data to be carried the amount of data that is to be carried by the channel for the amount of uplink data and the amount of downlink data;
  • Channel environment including uplink channel environment and downlink channel environment, which can be received signal strength indication (RSSI), signal to noise ratio (SNR), packet error rate (Paper Error Rate, PER), error vector Amplitude (error vector magnitude, EVM) or bit error rate (BER), signal-to-interference ratio (SIR), etc .;
  • RSSI received signal strength indication
  • SNR signal to noise ratio
  • PER packet error rate
  • EVM error vector Amplitude
  • BER bit error rate
  • SIR signal-to-interference ratio
  • Each service corresponds to a priority.
  • High-priority services need to ensure the transmission delay of their data.
  • different priorities correspond to different weighting factors.
  • Channel may include a channel of a physical layer (PHY) or a channel link of a media access control layer (MAC).
  • PHY physical layer
  • MAC media access control layer
  • FIG. 2a is a schematic structural diagram of a wireless fidelity (WI-FI) chip in a data transmission device (AP or STA) in the embodiment of the present application, and FIG. 2a uses dual links as an example.
  • the media access control (MAC) control module is connected to two sets of WI-FI sub-chips.
  • each set of WI-FI sub-chips includes a MAC module, a physical layer (PHY) module, and a radio frequency (PHY) module. radio frequency, RF module).
  • the MAC control module is used to process WI-FI-related operations and uniformly call the MAC module in the WI-FI sub-chip; the MAC module is used for channel access, group framing, data transmission and reception, encryption and decryption, energy saving control, etc. Function;
  • the PHY module is used to implement the physical layer functions defined by the 802.11 protocol, mainly for digital baseband processing; the RF module is used to convert the baseband signal into a radio frequency signal at the transmitting end, and convert the radio frequency signal received from the antenna into a baseband signal at the receiving end .
  • the AP involved in this embodiment of the present application may be a VAP in a physical AP (a physical AP may have multiple VAPs), or it may be two or more separate physical APs, which is not specifically limited herein.
  • Figure 2b is a schematic diagram of a physical STA (represented by a WI-FI chip) and a physical AP (represented by a WI-FI chip), and two channels are established, of which one physical The AP includes two VAPs (WI-FI daughter chips), and one physical STA includes two virtual stations (virtual stations, VSTAs) (WI-FI daughter chips).
  • the AP includes two VAPs (WI-FI daughter chips)
  • one physical STA includes two virtual stations (virtual stations, VSTAs) (WI-FI daughter chips).
  • FIG. 2c is a schematic diagram where one physical STA is connected to two physical APs and two channels are established.
  • the MAC control module in this embodiment is The implemented functions need to be transferred to the AP controller outside the AP, and the MAC control module in the AP controller performs unified scheduling on the MAC modules in multiple physical APs.
  • the STA involved in the embodiment of the present application may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem.
  • the STA may be a mobile station (MS), a subscriber unit, a cellular phone, a smart phone, a wireless data card, or a personal digital assistant (PDA) computer.
  • PDA personal digital assistant
  • Tablet computer wireless modem (modem), handheld device (handset), laptop (laptop computer), machine type communication (machine type communication (MTC) terminal, etc.).
  • the data transmission device in the embodiment of the present application may be an AP or a STA, and may also be a controller (such as an AP controller) located outside the AP and the STA.
  • the data transmission device is not limited here.
  • the steps in the embodiments of the present application may be performed separately by the AP or the STA, or may be performed jointly or interactively by the AP and the STA.
  • the downlink channel mentioned in the embodiment of the present application is responsible for transmitting data from the AP to the STA, and the uplink channel mentioned in the embodiment of the present application is responsible for transmitting data to the AP by the STA.
  • FIG. 3 is an embodiment of a data transmission method provided in this application. This embodiment includes:
  • the target service may be all services in the service to be carried, or may be a designated service.
  • the data amount of the data to be carried in the target service includes the target service.
  • the specific steps of determining the data amount of the data to be carried of the target service may be:
  • the MAC control module in the data transmission device obtains the service identity (ID) of the target service.
  • the service ID may include the application name of the target service, the service type of the target service, etc., and then through a preset database and service.
  • the ID infers the data amount of the theoretical uplink data of the target service, the data amount of the downlink theoretical data, and the priority of the target service.
  • the database stores the data amount of the theoretical uplink data of the target service and the data amount of the downlink theoretical data. And priority-related data corresponding to the target service.
  • the MAC control module in the data transmission device will assign a weight coefficient according to the priority, where the higher the priority, the larger the weight coefficient, and then according to the data of the uplink theoretical data of each service And the weight coefficient corresponding to each service determine the data amount of the uplink data of the target service, and determine the data amount of the downlink data of the target service according to the data amount of the downlink theoretical data of each service and the weight coefficient corresponding to each service.
  • the data amount of the theoretical upstream data of the first service is X 1UL-Re
  • the data amount of the theoretical downlink data of the first service is X 1DL-Re
  • theoretical data amount of the uplink data traffic to a second X 2UL-re is X 1DL-Re
  • W 1 is a weight coefficient according to the weight assigned to the first priority service, according to a second service
  • the weight coefficient for priority assignment is W 2
  • the data amount of the uplink data X UL-Re X 1UL-Re * W 1 + X 2UL-Re * W 2
  • the data amount of the downlink data X DL-Re X 1DL- Re * W 1 + X 2DL-Re * W 2 .
  • the function corresponding to the data transmission method mentioned in the embodiments of the present application can be turned on or off through the switch of the AP or STA interface or other options, that is, the function can be turned off when it is not needed, reducing
  • the processing load can also be specified by the AP or STA to always enable this function.
  • the actual carrying capacity in this application includes the actual uplink carrying capacity of each channel and the actual downlink carrying capacity of each channel, where N is an integer greater than 1, such as 2, 3.
  • the specific steps of determining the actual bearing capacity corresponding to the N channels between the STA and the AP may be:
  • the MAC control module in the data transmission device calculates the maximum uplink carrying capacity and the maximum downlink carrying capacity of each channel according to a modulation and coding scheme (MCS) table stored in the data transmission device.
  • MCS modulation and coding scheme
  • the MAC control module in the data transmission device acquires the uplink channel environment and the downlink channel environment of each channel.
  • the uplink channel environment may be received RSSI, SNR, PER, SIR and other information
  • the downlink channel environment may also be RSSI, SNR, PER, SIR, etc., in which the process of obtaining the uplink channel environment and the downlink channel environment of each channel can refer to the existing technology, which will not be described in detail here.
  • the MAC control module in the data transmission device calculates the actual uplink carrying capacity of each channel according to the maximum uplink carrying capacity of each channel in each channel and the corresponding uplink channel environment of the channel, and according to the maximum downlink carrying capacity of each channel in each channel. And the downlink channel environment corresponding to this channel calculates the actual downlink bearer capacity of each channel.
  • step 301 and step 302 are not limited, and step 301 may be performed at the same time as step 302, or may be performed after step 302.
  • Each channel combination in the multiple channel combinations includes at least one uplink candidate channel and / or at least one downlink candidate channel
  • the uplink candidate channel is a data amount of the N channel whose actual uplink carrying capacity is greater than the amount of uplink data.
  • the downlink candidate channel is a channel in which the actual downlink bearer capacity of the N channels is greater than the data amount of the downlink data.
  • each of the multiple channel combinations in the embodiments of the present application includes at least one uplink candidate channel and / or at least one downlink candidate channel.
  • each channel combination includes at least one uplink candidate channel and at least one downlink candidate channel;
  • each channel combination includes at least one uplink candidate channel
  • each channel combination includes at least one downlink candidate channel.
  • the uplink actual carrying capacity of the first channel Y UL-L1 58.5Mbps ;
  • the actual downlink bearer capacity of the second channel Y DL-L2 324.75 Mbps.
  • the candidate channel combination at this time includes a first candidate channel combination: ⁇ first channel (uplink), second channel (downlink) ⁇ , and a second candidate channel combination: ⁇ first channel (downlink), second channel (Up) ⁇ .
  • multiple channels can be determined as the uplink channels of the target service according to the rules set by the user. If there are no channels in the N channel combination that actually carry more data than the downlink data, then multiple channels can be determined as the downlink channels of the target service according to the rules set by the user, and the uplink channels and downlink channels For different channels.
  • the channel with the largest uplink actual bearer capacity in the channel combination may be determined as an uplink candidate channel according to a rule set by the user. If there are no channels in the N channel combinations whose actual downlink bearer data is greater than the data amount of the downlink data, then the channel with the largest downlink bearer capacity in the channel combination may be determined as a downlink candidate channel according to a rule set by the user. If the uplink candidate channel and the downlink candidate channel are different channels at this time, the uplink candidate channel is determined as the uplink channel of the target service, and the downlink candidate channel is determined as the downlink channel of the target service.
  • the uplink channel or the downlink channel is determined according to the data amount of the uplink to-be-carried data of the target service and the downlink service-to-be-carried data of the target service, and the data amount is
  • the candidate channel corresponding to the larger data to be carried is determined as the target channel (such as the target uplink channel), and then another channel (such as the target downlink channel) is determined from the channels other than the target channel.
  • the uplink actual bearer capacity of the first channel Y UL-L1 58.5Mbps
  • the actual uplink bearer capacity of the second channel Y UL-L2 346.4 Mbps.
  • the data amount of the uplink data of the target service X UL-Re 50 Mbps, (if it is the second possibility, the downlink actual bearer capacity of the first channel and the second channel may not be obtained at this time) At this time:
  • the candidate channel combinations at this time include a first candidate channel combination ⁇ first channel (uplink) ⁇ and a second candidate channel combination ⁇ second channel (downlink) ⁇ .
  • multiple channels can be determined as uplink channels of the target service according to the rules set by the user, or The channel with the highest uplink actual carrying capacity is determined as the uplink channel.
  • the actual downlink bearer capacity of the first channel Y DL-L1 55.25Mbps ;
  • the actual downlink bearer capacity of the second channel Y DL-L2 324.75 Mbps.
  • the data volume of the downlink data of the target service X DL-Re 55Mbps, (if it is the third possibility, the uplink actual bearer capacity of the first channel and the second channel may not be obtained at this time) At this time:
  • the candidate channel combinations at this time include a first candidate channel combination: ⁇ second channel (downlink) ⁇ , and a second candidate channel combination: ⁇ first channel (downlink) ⁇ .
  • multiple channels can be determined as uplink channels of the target service according to the rules set by the user, or The channel with the highest downlink actual carrying capacity is determined as the downlink channel.
  • the rules set by the user in the embodiments of the present application may be the rules corresponding to the matching degree between the service requirements and the channels mentioned in the embodiments of the present application.
  • the target channel combination includes an uplink channel of the target service and / or a downlink channel of the target service.
  • determining the target channel combination from the candidate channel combinations according to the matching degree of the service demand and the channel may include at least the following solutions.
  • the MAC control module determines the round trip time (RTT) of the data corresponding to the candidate channel combination. For example, if the RTT of the first candidate channel combination is determined, the MAC control module in the STA controls The MAC module corresponding to the channel sends uplink data to obtain the uplink delay. The MAC control module in the AP controls the MAC module corresponding to the second channel in the AP to send downlink data to obtain the downlink delay. The uplink delay is added to the downlink delay. RTT for the first candidate channel combination. After polling each candidate channel combination, the candidate channel combination with the smallest RTT in each combination is determined as the target candidate channel combination, and the uplink channel in the target candidate channel combination is the uplink channel of the target service. And / or the downlink channel in the candidate channel combination is the downlink channel of the target service.
  • RTT round trip time
  • the correlation and corresponding candidate channel combination with larger median values of S 1 and S 2 are determined as the target candidate channel combination.
  • D 2 (Y UL-L2 -X UL-Re ) ⁇ 2 + (Y DL-L1 -X DL-Re ) ⁇ 2 .
  • the candidate channel combination corresponding to the smaller variance of the median values of D 1 and D 2 is determined as the target candidate channel combination.
  • the MAC control module determines the integrated value according to the RTT, correlation and variance and the coefficients corresponding to the RTT, correlation and variance, and determines the candidate channel combination with the largest integrated value as the target candidate channel combination.
  • the candidate channel combination corresponding to the smaller integrated value of Z 1 and Z 2 is determined as the target candidate channel combination, where R 1 is the RTT corresponding to the first candidate channel combination, and R 2 is the first RTT corresponding to the two alternative channel combinations, a 1 is the coefficient corresponding to RTT, a 2 is the correlation and corresponding coefficient, a 3 is the coefficient corresponding to the variance, where a 1 and a 3 are negative numbers, a 2 Is a positive number.
  • determining the target channel combination from the candidate channel combinations according to the matching degree between the service demand and the channel may include at least the following solutions.
  • the MAC control module controls the MAC module corresponding to the first channel in the STA to send uplink data to obtain a first uplink delay, and controls the MAC module corresponding to the second channel to send uplink data to obtain a second uplink delay. After polling all the candidate channel combinations, the candidate channel combination with the smallest uplink delay is determined as the target candidate channel combination.
  • the candidate channel combination corresponding to the channel with the largest uplink actual carrying capacity among the candidate channel combinations is determined as the target candidate channel combination.
  • determining the target channel combination from the candidate channel combinations according to the matching degree of the service demand and the channel may include at least the following solutions.
  • the MAC control module controls the MAC module corresponding to the first channel in the STA to send downlink data to obtain the first downlink delay, and controls the MAC module corresponding to the second channel to send downlink data to obtain the second downlink delay. After each candidate channel combination is polled, the candidate channel combination with the lowest downlink delay is determined as the target candidate channel combination.
  • the candidate channel combination corresponding to the channel with the largest downlink actual bearing capacity among the candidate channel combinations is determined as the target candidate channel combination.
  • the number of channels is three, which are the first channel, the second channel, and the third channel respectively.
  • the service to be carried has 3D Interactive movies and WeChat are two services. Among them, 3D interactive movies are high-priority delay-sensitive services and WeChat services are low-priority delay-insensitive services. At this time, 3D interactive movies are determined as the target services.
  • Y UL-L1 > X UL-Re and Y DL-L2 > X DL-Re determine the first channel as the uplink channel of the 3D interactive movie service and the second channel as the downlink channel of the 3D interactive movie service.
  • Channel, and the third channel can carry both uplink data and downlink data of the WeChat service.
  • the service direction of the third channel can be considered as the downlink of the 3D interactive movie service Alternate channel.
  • the service direction of the third channel can be considered as the uplink of the 3D interactive movie service. Alternate channel.
  • the channel transmission information indicates which of the above N channels are uplink channels of the target service and which channels are downlink channels of the target service.
  • the peer end is an AP
  • the peer is STA.
  • the channel transmission information needs to be sent to the MAC control module on the AP side so that the MAC control modules at both ends make a transmission agreement, for example, the channel transmission information indicates the first
  • the channel is an uplink channel and the second channel is a downlink channel.
  • the MAC control module on the STA side controls the MAC module and RF module corresponding to the first channel in the STA to send uplink to-be-carried data to the AP side, and the MAC on the AP side.
  • the control module sends the MAC module and RF module corresponding to the second channel in the control AP to the downlink to-be-carried data to the MAC side.
  • the uplink to-be-carryed data sends data on one channel
  • the downlink to-be-carried data sends data on another channel.
  • the uplink and downlink data are sent on different channels, which can effectively avoid the collision of uplink and downlink data and reduce the delay of data waiting.
  • the display interface of the STA displays the two channels and the link receiving and transmitting directions of the two channels.
  • "1" in the WI-FI icon at the top of the screen indicates the first channel
  • "2" indicates the second channel
  • an arrow up indicates that the channel is an uplink channel
  • an arrow down indicates that the channel is a downlink channel
  • the first channel in FIG. 4b is an uplink channel
  • the second channel is a downlink channel.
  • the application may also send information such as the data amount of the data to be carried by the target service and the actual bearer capacity of the channel to the peer end.
  • the MAC control module at the end confirms the channel information according to these information.
  • the threshold may be 10 Mbps, the specific value of the threshold is The value is not limited here.
  • steps 301 to 305 need to be performed again.
  • the MAC control module on the STA side controls the MAC module corresponding to the uplink channel to send the uplink data corresponding to the uplink data
  • the MAC control module on the AP side controls the correspondence with the downlink channel.
  • the MAC module sends downlink data corresponding to the downlink data.
  • the data transmission method in the embodiment of the present application is also applicable to a scenario in which multiple physical STAs are connected to multiple APs. At this time, it is necessary to arrange channels with the same frequency or overlapping bandwidths to carry services in the same direction as much as possible. To reduce collision and waiting delays.
  • the target service in the embodiment of the present application may include a first target service and a second target service, a STA includes a first STA and a second STA, and an AP includes a first AP and a second AP.
  • the first STA corresponds to the first target service
  • the second STA corresponds to the second target service.
  • the first STA includes two VSTAs
  • the second STA includes two VSTAs.
  • the first STA uses its own A VSTA sends uplink data corresponding to the first target service to the first AP
  • the second STA sends uplink data corresponding to the second target service to the first AP through one of its own VSTAs.
  • the first STA uses its own other VSTA.
  • the second STA receives the downlink data corresponding to the second target service sent by the second AP through another VSTA of its own, and the AP controller
  • Each MAC module of the second AP performs unified scheduling.
  • channel link 1 represents the uplink channel designated for the first target service
  • channel link 2 represents the downlink channel designated for the first target service
  • channel link 3 represents the uplink channel designated for the second target service
  • channel link 4 represents The downlink channel designated for the second target service.
  • the first STA and the second STA may use orthogonal frequency division multiple access (OFDMA).
  • OFDMA orthogonal frequency division multiple access
  • Method for uplink data transmission for example, the frequency resources corresponding to channel link 1 and channel link 3 are the same, and the frequency bandwidth of the frequency resource is 20M.
  • the frequency resource of the 20M bandwidth can be divided into 64 sub-bands. Carrier, and then divide the 64 subcarriers into two groups, where one group of subcarriers corresponds to channel connection 1, and the other group of subcarriers corresponds to channel connection 3, then the first STA and the second STA can use these two sets of subcarriers.
  • the method transmits uplink data corresponding to respective services in the uplink.
  • the first STA and the second STA may adopt space-division multiplexing (multi-user multiple-input multiple -output (MU-MIMO) method for uplink data transmission; at this time, channel link 1 and channel link 3 are dual-transmitted and dual-received through MU-MIMO, and are divided into two space-time streams, corresponding to channel link 1 and channel link 3, respectively.
  • space-division multiplexing multi-user multiple-input multiple -output (MU-MIMO) method for uplink data transmission
  • MU-MIMO space-division multiplexing
  • the first STA and the second STA may use the OFDMA method for downlink data transmission;
  • the first STA and the second STA may use MU-MIMO to perform downlink data transmission.
  • the first STA and The second STA uses the OFDMA method to perform uplink data transmission and downlink data transmission, respectively.
  • the first The STA and the second STA respectively perform uplink data transmission and downlink data transmission in a MU-MIMO manner.
  • the first AP is connected to the first STA and the second STA, and the second AP is also connected to the first STA and the second STA, respectively. It should be noted that only the first AP or only the second AP exists. The case where the first STA and the second STA are respectively connected, that is, the case where one AP is connected to multiple STAs is also applicable to this method.
  • the data transmission device in the embodiment of the present application may also send management frames or control frames on the uplink channel and / or the downlink channel according to a preset transmission period according to a preset period. Occupation of the uplink channel and / or the downlink channel to reduce interference from third parties (such as other APs), and the length of the preset period is not limited herein.
  • the data transmission device in the embodiment of the present application may also adjust configuration parameters of the MAC layer to reduce the waiting time for data transmission.
  • the STA or the AP respectively specifies an uplink channel and an uplink channel for the target service from the N channels according to the actual bearing capacity of each of the N channels and the data amount of the data to be carried by the target service.
  • / or a downlink channel where the N channels are channels between a station STA and an access point AP, and each of the N channels has the capability of uplink transmission and downlink transmission, and the to-be-borne
  • the data includes: uplink data and downlink data, where N is an integer greater than 1, and then the uplink data is transmitted through the uplink channel, and / or the downlink data is transmitted through the downlink channel.
  • the uplink channel can only be used to transmit uplink data corresponding to the uplink data, but not to transmit downlink data corresponding to the downlink data, so the STA can directly send uplink data to the AP through the determined uplink channel without waiting.
  • the AP completes sending downlink data, which can reduce transmission delay and avoid data collision on the uplink channel.
  • the downlink channel can only be used to transmit the downlink data corresponding to the downlink data. It is not used to transmit the uplink data.
  • the AP can directly send the uplink data to the STA through the determined downlink channel. There is no need to wait for the STA to finish sending the uplink data. Reduce the transmission delay and avoid data collision on the downlink channel.
  • An embodiment of the data transmission device 500 in the embodiment of the present application includes:
  • a processing module 501 is configured to specify an uplink channel and / or a downlink channel for the target service from the N channels according to the actual bearing capacity of each of the N channels and the data amount of the data to be carried by the target service, where
  • the N channels are channels between the station STA and the access point AP, and each of the N channels has the capability of uplink transmission and downlink transmission.
  • the data to be carried includes: uplink data and downlink data, The N is an integer greater than 1;
  • the sending module 502 is configured to transmit the uplink data through the uplink channel, and / or transmit the downlink data through the downlink channel.
  • the data transmission device in the embodiment of the present application may be an AP or a STA, and may also be a controller (such as an AP controller) located outside the AP and the STA.
  • the data transmission device is not limited here.
  • the steps in the embodiments of the present application may be performed separately by the AP or the STA, or may be performed jointly or interactively by the AP and the STA.
  • the processing module 501 in the embodiment of the present application may be a baseband processor, may be integrated in a WI-FI chip, or may be another processor, which is not specifically limited herein; the sending module 502 in the embodiment of the application It can be a radio frequency transmitting circuit, can be integrated in a WI-FI chip, or other transmitting devices, which is not limited here.
  • the processing module 501 is specifically configured to determine multiple candidate channel combinations, each candidate channel combination including at least one uplink candidate channel and / or at least one downlink candidate channel, the uplink candidate channel It is a channel in which the actual uplink carrying capacity of the N channels is greater than the amount of data of the uplink data, and the downlink candidate channel is a channel in which the actual downlink carrying capacity of the N channels is greater than the amount of data of the downlink data; according to service requirements and channels
  • the matching degree determines a target channel combination from the candidate channel combinations, and the target channel combination includes the uplink channel and / or the downlink channel.
  • the N is greater than or equal to 3
  • the processing module 501 is further configured to determine a channel other than the uplink channel and / or the downlink channel among the N channels as a target channel, where the target channel is used for To transmit data to be carried corresponding to a service other than the target service among the services to be carried, the target channel may perform uplink data transmission and / or downlink data transmission.
  • the processing module 501 is further specifically configured to: determine the data transmission delay corresponding to each candidate channel combination; and the candidate channel corresponding to the data transmission delay with the smallest median transmission delay The combination is determined as the target channel combination.
  • the candidate channel combination includes a first candidate channel combination and a second candidate channel combination
  • the processing module 501 is further configured to: obtain a service identification ID of the target service; obtain the data amount of the uplink theoretical data of the target service, and the target service's data according to a preset database and the service ID. Determine the data amount of the downlink theoretical data and the priority of the target service; determine the data amount of the uplink data according to the data amount of the upstream theoretical data and the priority; and / or, based on the data amount of the downstream theoretical data and the priority Determine the data amount of the downlink data.
  • the processing module 501 is further configured to: obtain a maximum bearer capability of each of the N channels, the maximum bearer capability including an uplink maximum bearer capability and a downlink maximum bearer capability; acquire an uplink channel environment of the channel And downlink channel environment; determining the actual uplink bearing capacity of the channel according to the uplink maximum carrying capacity and the uplink channel environment, and determining the actual downlink carrying capacity of the channel according to the maximum carrying capacity and the downlink channel environment.
  • the sending module 502 is further configured to send channel transmission information to a peer end, where the peer end is the STA or the AP, and the channel transmission information indicates that the channel is an uplink channel or a downlink channel.
  • the target service includes a first target service and a second target service
  • the STA includes a first STA and a second STA
  • the first target service is a service between the first STA and the AP.
  • the second target service is a service between the second STA and the AP; when the frequency resource corresponding to the uplink channel and / or the downlink channel designated for the first target service is the same as the frequency resource designated for the second target service
  • the sending module 502 is specifically configured to perform uplink data transmission and / or downlink data transmission in an orthogonal frequency division multiplexing OFDM manner.
  • the target service includes a first target service and a second target service
  • the STA includes a first STA and a second STA
  • the first target service is a service between the first STA and the AP.
  • the second target service is a service between the second STA and the AP; when the time-frequency resources corresponding to the uplink channel and / or the downlink channel specified for the first target service are different from those specified for the second target service
  • the sending module 502 is specifically configured to use a space division multiplexing MU-MIMO manner for uplink data transmission and / or downlink data transmission.
  • the sending module 502 is further configured to send a management frame or a control frame in the uplink channel and / or the downlink channel according to a preset period.
  • the processing module 501 is further configured to adjust configuration parameters of the MAC layer of the media access control to reduce the waiting delay of data transmission.
  • an embodiment of the present application further provides a data transmission device 600 including: one or more processors 602, a receiver 603, a transmitter 604, a memory 601, and a bus 605.
  • processors 602, a receiver 603, a transmitter 604, and a memory 601 are connected to each other through a bus 605.
  • the one or more processors 602 are configured to run at least one application in the background and clean up at least one target application according to user data.
  • the user data is statistical data obtained based on a history of a user using the application; and the target application is an application that meets a preset rule determined according to the user data.
  • the memory 601 stores one or more programs.
  • the memory 601 may mainly include a storage program area and a storage data area, where the storage program area may store an operating system, at least one function (Application, APP) required by a function, and the like.
  • the storage data area may store data and the like created according to the use of the data transmission device 600.
  • the memory 601 may include a high-speed random access memory, and may further include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the one or more processors 602 may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific Integrated Circuit). ASIC), Field Programmable Gate Array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure.
  • the processor may also be a combination that implements computing functions, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the receiver 603 and the transmitter 604 are used for the data transmission device 600 and other devices to communicate with each other.
  • the bus 605 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus or the like.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only a thick line is used in FIG. 6, but it does not mean that there is only one bus or one type of bus.
  • an embodiment of the present application further provides a data transmission system 700 including: one or more processors 702, a receiver 703, a transmitter 704, a memory 701, and a bus 705.
  • processors 702, a receiver 703, a transmitter 704, and a memory 701 are connected to each other through a bus 705.
  • the one or more processors 702 are configured to run at least one application in the background and clean up at least one target application according to user data.
  • the user data is statistical data obtained based on a history of a user using the application; and the target application is an application that meets a preset rule determined according to the user data.
  • the memory 701 stores one or more programs.
  • the memory 701 may mainly include a storage program area and a storage data area, where the storage program area may store an operating system, at least one application (Application, APP) required for a function, and the like.
  • the storage data area may store data and the like created according to the use of the data transmission system 700.
  • the memory 701 may include a high-speed random access memory, and may further include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the one or more processors 702 may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific Integrated Circuit). ASIC), Field Programmable Gate Array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure.
  • the processor may also be a combination that implements computing functions, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the receiver 703 and the transmitter 704 are used for the data transmission system 700 and other devices to communicate with each other.
  • the bus 705 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, or the like.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 7, but it does not mean that there is only one bus or one type of bus.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server, or data center Transmission by wire (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center.
  • wire for example, coaxial cable, optical fiber, digital subscriber line (DSL)
  • wireless for example, infrared, wireless, microwave, etc.
  • the computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server, a data center, and the like that includes one or more available medium integration.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (Solid State Disk (SSD)), and the like.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the above integrated unit may be implemented in the form of hardware or in the form of software functional unit.
  • the integrated unit When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially a part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium. , Including a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application.
  • the aforementioned storage media include: U disks, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or compact discs and other media that can store program codes .

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Abstract

本申请实施例提供了一种数据传输方法及其相关装置，用于减少上下行数据碰撞的可能性，以及减少数据传输的时延。首先STA或AP根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从所述N条信道中分别为所述目标业务指定上行信道和/或下行信道，其中，所述N条信道为站点STA与接入点AP之间的信道，且所述N条信道中的每条信道均具有上行传输和下行传输的能力，所述待承载数据包括：上行数据以及下行数据，所述N为大于1的整数；然后通过所述上行信道中传输所述上行数据，和/或，通过所述下行信道中传输所述下行数据。

Description

一种数据传输方法及其相关装置 技术领域
本申请涉及通信技术领域，尤其涉及一种数据传输方法及其相关装置。
背景技术
目前，无线局域网络(wireless local area networks，WLAN)的应用已经越来越普及，在一些应用场景下，一个站点(Station，STA)存在同时接入多个接入点(access point，AP)的需求。
如图1所示，以双链路为例，一个STA中接入了两个AP，其中，这两个AP可以是一个物理AP中的两个虚拟站点(virtual access point，VAP)，也可以是两个单独的物理AP。
对于有极高传输延迟限制的业务，例如：第一人称射击游戏(first-person shooting game，FPS)，增强现实(Augmented Reality，AR)，虚拟现实(Virtual Reality，VR)等业务，总体业务的时延要在10ms以内，对时延的要求非常严格。
在现有技术中，虽然一个STA可以连接多个AP，该STA可以和多个AP之间建立多条双工信道，但是，每条信道都需要负责上行和下行的数据承载，信道发送数据之前，STA和AP会进行载波侦听多址接入(carrier sense multiple access，CSMA)/增强分布式信道接入(enhanced distributed channel access，EDCA)退避，数据发送后可能会发生空口碰撞，如果发生空口碰撞，则数据发送失败，需要重新发送，一般，当信道上下行均有数据发送时，如果AP或STA正在发送上行数据，则下行需要等待上行发送完毕，才能进行数据发送，如果正在发送下行数据，则上行需要等待下行发送完毕，才能进行数据发送。
由于现有技术中每条信道都需要负责上行数据和下行数据的承载，可能会导致上下行数据发生碰撞，且数据发送的等待时延长。
发明内容
本申请实施例提供了一种数据传输方法及其相关装置，用于减少上下行数据碰撞的可能性，进而减少数据传输的时延。
第一方面，本申请实施例提供一种数据传输方法，具体包括：数据传输装置根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从该N条信道中分别为该目标业务指定上行信道和/或下行信道，其中，该N条信道为站点STA与接入点AP之间的信道，且该N条信道中的每条信道均具有上行传输和下行传输的能力，该待承载数据包括：上行数据以及下行数据，该N为大于1的整数；然后通过该上行信道中传输该上行数据，和/或，通过该下行信道中传输该下行数据。本申请实施例中，根据目标业务的待承载数据量，将多条双工信道中的至少一部分信道指定为上行信道和/或下行信道，其中，上行信道只用于传输上行数据，下行信道只用于传输下行数据，可以避免在上行/下行信道上的数据碰撞，进而可以减少传输时延。
在一种可能的设计中，该根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从该N条信道中分别为该目标业务指定上行信道和/或下行信道包括：数据传输装置确定多个备选信道组合，其中，每个备选信道组合包括至少一条上行备选信道和/或至少一条下行备选信道，该上行备选信道为该N条信道中上行实际承载能力大于该上行数据的数据量的信道，该下行备选信道为该N条信道中下行实际承载能力大于该下行数据的数据量的信道；然后根据业务需求与信道的匹配度从该备选信道组合中确定目标信道组合，该目标信道组合包括该上行信道和/或该下行信道。本实现方式首先确定多个备选信道组合，然后再从多个备选信道组合中确定一个目标信道组合，提高了方案的简便性。
在一种可能的设计中，该N大于或等于3，该目标业务为待承载业务中优先级最高的业务，该方法还包括：将该N条信道中除了该上行信道和/或该下行信道以外的信道确定为目标信道，该目标信道用于传输该待承载业务中除了该目标业务以外的业务对应的待承载数据，所述目标信道可进行上行数据传输和/或下行数据传输。本实现方式中，还会确定除了上行信道和下行信道以外的信道，提高了方案的兼容性。
在一种可能的设计中，该根据业务需求与信道的匹配度从该备选信道组合中确定目标信道组合包括：确定该每个备选信道组合对应的数据传输时延；然后将该数据传输时延中值最小的数据传输时延所对应的备选信道组合确定为目标信道组合。本实现方式具体介绍了确定目标信道组合的一种方式，丰富了具体的实现手段。
在一种可能的设计中，该根据业务需求与信道的匹配度从该备选信道组合中确定目标信道组合包括：通过如下公式计算每个备选信道组合对应的相关和S：S＝X UL-Re*Y UL+X DL-Re*Y DL，其中，该X UL-Re表示该上行数据，该X DL-Re表示该下行数据，该Y UL表示该备选信道组合中的上行备选信道所对应的上行实际承载能力；该Y DL表示该备选信道组合中的下行备选信道所对应的下行实际承载能力；将每个备选信道组合对应的相关和中值最大的相关和所对应的备选信道组合确定为该目标信道组合。本实现方式具体介绍了确定目标信道组合的另一种方式，丰富了具体的实现手段。
在一种可能的设计中，该备选信道组合包括第一备选信道组合和第二备选信道组合，该根据业务需求与信道的匹配度从该备选信道组合中确定目标信道组合包括：按照如下方式计算每个备选信道组合对应的方差D：D＝(Y UL-X UL-Re) ^2+(Y DL-X DL-Re) ^2，其中，该X UL-Re表示该上行数据，该X DL-Re表示该下行数据，该Y UL表示该备选信道组合中的上行备选信道所对应的上行实际承载能力；该Y DL表示该备选信道组合中的下行备选信道所对应的下行实际承载能力；本实现方式具体介绍了确定目标信道组合的另一种方式，丰富了具体的实现手段。
在一种可能的设计中，该根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从该N条信道中分别为该目标业务指定上行信道和/或下行信道之前，该方法还包括：获取该目标业务的业务身份标识ID；根据预置的资料库以及该业务ID获取该目标业务的上行理论数据的数据量、该目标业务的下行理论数据的数据量以及该目标业务的优先级；根据该上行理论数据的数据量以及该优先级确定该上行数据的数据量；和/或，根据该下行理论数据的数据量以及该优先级确定该下行数据的数据量。本实现方式具 体介绍了获取上行信道的数据量和/或下行信道的数据量的方式，节约了数据传输装置的存储空间。
在一种可能的设计中，该根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从该N条信道中分别为该目标业务指定上行信道和/或下行信道之前，该方法还包括：获取该N条信道中每条信道的最大承载能力，该最大承载能力包括上行最大承载能力和下行最大承载能力；获取该信道的上行信道环境和下行信道环境；根据该上行最大承载能力和该上行信道环境确定该信道的上行实际承载能力，根据该最大承载能力和该下行信道环境确定该信道的下行实际承载能力。本实现方式具体介绍了获取待承载数据的数据量的方式，节约了数据传输装置的存储空间。
在一种可能的设计中，该通过该上行信道中传输该上行数据，和/或，通过该下行信道中传输该下行数据之前，该方法还包括：发送信道传输信息至对端，该对端为该STA或该AP，该信道传输信息指示该信道为上行信道或下行信道。本实现方式还需要发送信道传输信息至对端，提供了一种灵活的信息交互模式、提升了实现的灵活性。
在一种可能的设计中，该目标业务包括第一目标业务和第二目标业务，该STA包括第一STA和第二STA，该第一目标业务为该第一STA与该AP之间的业务，该第二目标业务为该第二STA与该AP之间的业务；当为该第一目标业务所指定的上行信道和/或下行信道所对应的频率资源，与为该第二目标业务所指定的上行信道和/或下行信道所对应的频率资源相同或部分重叠时，该第一STA和该第二STA采用正交频分复用OFDM的方式进行上行数据传输和/或下行数据传输。本实现方式用复用方式进行数据的传输，可以节约信道资源，并且避免上行数据和/或下行数据之间同一时间传输时的碰撞。
在一种可能的设计中，该目标业务包括第一目标业务和第二目标业务，该STA包括第一STA和第二STA，该第一目标业务为该第一STA与该AP之间的业务，该第二目标业务为该第二STA与该AP之间的业务；当为该第一目标业务所指定的上行信道和/或下行信道所对应的时频资源，与为该第二目标业务所指定的上行信道和/或下行信道所对应的时频资源相同或部分重叠时，该第一STA和该第二STA采用空分复用MU-MIMO的方式进行上行数据传输和/或下行数据传输。本实现方式用复用方式进行数据的传输，可以节约信道资源，并且避免上行数据和/或下行数据之间同一时间传输时的碰撞。
在一种可能的设计中，该根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从该N条信道中分别为该目标业务指定上行信道和/或下行信道之后，该方法还包括：根据预置周期在该上行信道和/或该下行信道中发送管理帧或控制帧。本实现方式可以防止第三方设备占用上行信道和/或下行信道，减少数据传输的时延。
在一种可能的设计中，该方法还包括：调整媒体访问控制MAC层的配置参数，本实现方式可以减少数据发送的等待时延，从而减少数据传输的时延。
第二方面，本申请实施例提供了一种数据传输装置，该数据传输装置用于执行第一方面或第一方面的任意可能的实现方式中的方法。具体地，该数据传输装置包括用于执行第一方面或第一方面的任意可能的实现方式中的方法的模块。
第三方面，本申请实施例提供了一种数据传输系统，该数据传输系统包括站点STA和 接入点AP，该STA和该AP之间存在N条信道，该N为大于1的整数，该数据传输系统用于执行第一方面或第一方面的任意可能的实现方式中的方法。
本申请的又一方面提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述各方面该的方法。
本申请的又一方面提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述各方面该的方法。
本申请实施例提供的技术方案中，首先STA或AP根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从所述N条信道中分别为所述目标业务指定上行信道和/或下行信道，其中，所述N条信道为站点STA与接入点AP之间的信道，且所述N条信道中的每条信道均具有上行传输和下行传输的能力，所述待承载数据包括：上行数据以及下行数据，所述N为大于1的整数；然后通过所述上行信道传输所述上行数据，和/或，通过所述下行信道传输所述下行数据。本实施例中，上行信道只能用于传输所述上行数据对应的上行数据，而不用于传输下行数据对应的下行数据，因此STA可以直接通过确定的上行信道向AP发送上行数据，不需要等待AP完成下行数据的发送，既可以减少传输时延，又可避免该上行信道上的数据碰撞。同样地，下行信道也只能用于传输下行数据对应的下行数据，不用于传输上行数据，AP可以直接通过确定的下行信道向STA发送上行数据，不需要等待STA完成上行数据的发送，既可以减少传输时延，又可以避免该下行信道上的数据碰撞。
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图1为现有技术中的一种应用场景示意图；
图2a为本申请实施例中数据传输装置的一个结构示意图；
图2b为本申请实施例中数据传输方法的一个应用场景示意图；
图2c为本申请实施例中数据传输方法的另一个应用场景示意图；
图3为本申请实施例中数据传输方法的一个流程示意图；
图4a为本申请实施例中数据传输方法的一个应用场景示意图；
图4b为本申请实施例中数据传输方法的一个显示界面示意图；
图4c为本申请实施例中数据传输方法的一个应用场景示意图；
图5为本申请实施例中数据传输装置的一种结构示意图；
图6为本申请实施例中数据传输装置的另一种结构示意图；
图7为本申请实施例中数据传输系统的一种结构示意图。
具体实施方式
本申请实施例提供了一种数据传输方法及其相关装置，用于减少上下行数据碰撞的可能性，以及减少数据传输的时延。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理 解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
首先对本申请中的术语进行解释与说明：
实际承载能力：表示信道的实际吞吐能力或实际承载能力；
待承载数据的数据量：为信道即将需要承载的上行数据量和下行数据量的数据量大小；
信道环境：包括上行信道环境和下行信道环境，可以是信号强度指示(received signal strengthindication，RSSI)、信噪比(singal to noise ratio，SNR)、误包率(Packet Error Rate，PER)、误差向量幅度(error vector magnitude，EVM)或误码率(bit error rate，BER)、信干比(signal to interference ratio，SIR)等；
最大承载能力：为信道在无干扰情况下的吞吐量；
优先级：每个业务对应一个优先级，优先级高的业务需要优先保证其数据的传输时延，其中，不同的优先级对应有不同的权重系数；
信道：可以包括物理层(physical layer，PHY)的信道或媒体访问控制层(media access control，MAC)的信道链接。
如图2a所示，图2a为本申请实施例中数据传输装置(AP或STA)中的无线保真(wIreless fIdelity，WI-FI)芯片的一种结构示意图，图2a以双链路为例，媒体访问控制(media access control，MAC)控制模块分别跟两套WI-FI子芯片连接，其中，每套WI-FI子芯片都包括MAC模块、物理层(physical layer，PHY)模块、射频(radio frequency，RF模块)。
其中，MAC控制模块用于处理与WI-FI相关的运算，并统一调用WI-FI子芯片中的MAC模块；MAC模块用于信道接入、组解帧、数据收发、加解密、节能控制等功能；PHY模块用于实现802.11协议定义的物理层功能，主要为数字基带处理；RF模块用于在发射端将基带信号转化为射频信号，在接收端将从天线接收的射频信号转化为基带信号。
本申请实施例中所涉及到AP可以是一个物理AP中的VAP(一个物理AP中可以有多个VAP)，也可以是两个或多个单独的物理AP，具体此处不做限定。
如图2b所示，图2b为一个物理STA(用一个WI-FI芯片表示)和一个物理AP(用一个WI-FI芯片表示)相连接，并建立了两条信道的示意图，其中，一个物理AP中包括两个VAP(WI-FI子芯片)，一个物理STA中包括两个虚拟站点(virtual station，VSTA)(WI-FI子芯片)。
如图2c所示，图2c为一个物理STA和两个物理AP相连接，并建立了两条信道的示意图，其中，相对于图2b所对应的实施例，本实施例中的MAC控制模块所实现的功能则需要转移到AP外部的AP控制器中，由AP控制器中的MAC控制模块对多个物理AP中的MAC模块进行统一调度。
本申请实施例中所涉及到的STA可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备。所述STA可以是移动 站(mobile station，MS)、用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handset)、膝上型电脑(laptop computer)、机器类型通信(machine type communication,MTC)终端等。
需要说明的是，本申请实施例中的数据传输装置可以为AP也可以为STA，还可以为位于AP和STA之外的控制器(如AP控制器)，数据传输装置具体此处不做限定，本申请实施例中的步骤可以由AP或STA单独执行，也可以是AP和STA共同执行或交互执行。
其中，本申请实施例中提及的下行信道负责AP向STA传输数据，本申请实施例中提及的上行信道负责STA向AP传输数据。
如图3所示，图3为本申请提供的数据传输方法的一个实施例，本实施例包括：
301、确定目标业务的待承载数据的数据量。
本申请实施例中目标业务可以是待承载业务中的所有业务，也可以是指定的业务，例如，为待承载业务中优先级最高的业务，目标业务的待承载数据的数据量包括：目标业务的上行数据的数据量以及目标业务的下行数据的数据量。
其中，确定目标业务的待承载数据的数据量的具体步骤可以为：
首先数据传输装置中的MAC控制模块获取目标业务的业务身份标识(identity，ID)，该业务ID可以包括目标业务的应用名，该目标业务的业务类型等，然后通过预置的资料库以及业务ID推断出目标业务的上行理论数据的数据量、下行理论数据的数据量以及该目标业务的优先级，该资料库中存有该目标业务的上行理论数据的数据量、下行理论数据的数据量以及该目标业务对应的优先级相关的数据。
如果有两个或两个以上目标业务时，数据传输装置中的MAC控制模块将根据优先级分配权重系数，其中，优先级越高，权重系数越大，然后根据各个业务的上行理论数据的数据量以及各个业务对应的权重系数确定目标业务的上行数据的数据量，并根据各个业务的下行理论数据的数据量以及各个业务对应的权重系数确定目标业务的下行数据的数据量。
具体地，假如有第一业务和第二业务两个目标业务，且第一业务的上行理论数据的数据量为X 1UL-Re，第一业务的下行理论数据的数据量为X 1DL-Re，第二业务的上行理论数据的数据量为X 2UL-Re，第二业务的下行理论数据的数据量为X 2DL-Re，根据第一业务优先级分配的权重系数为W 1，根据第二业务优先级分配的权重系数为W 2，则上行数据的数据量X UL-Re＝X 1UL-Re*W 1+X 2UL-Re*W 2；下行数据的数据量X DL-Re＝X 1DL-Re*W 1+X 2DL-Re*W 2。
需要说明的是，本申请实施例中提及的数据传输方法所对应的功能可以通过AP或STA界面的开关或者其他选项开启或关闭，即在不需要使用该功能的时候可以关闭该功能，降低处理负荷，也可以规定AP或STA一直开启该功能。
302、确定STA与AP之间的N条信道对应的实际承载能力。
本申请中的实际承载能力包括各条信道的上行实际承载能力以及各条信道的下行实际承载能力，其中，N为大于1的整数，例如2、3。
其中，确定STA与AP之间的N条信道对应的实际承载能力的具体步骤可以为：
首先数据传输装置中的MAC控制模块根据数据传输装置中存储的调制与编码策略 (modulation and coding scheme，MCS)表等，推算出各个信道上行最大承载能力和下行最大承载能力，其中，根据MCS表计算信道的最大承载能力的过程可参照现有技术，具体此处不做详细说明。
并且数据传输装置中的MAC控制模块获取各个信道的上行信道环境和下行信道环境，其中，上行信道环境可以为接收的RSSI，SNR，PER,SIR等信息，下行信道环境也可以为RSSI，SNR，PER,SIR等，其中，获取各个信道的上行信道环境和下行信道环境的过程可参照现有技术，具体此处不做详细说明。
最后数据传输装置中的MAC控制模块再根据各信道中每条信道上行最大承载能力以及该信道对应的上行信道环境计算每条信道的上行实际承载能力，根据各信道中每条信道下行最大承载能力以及该信道对应的下行信道环境计算每条信道的下行实际承载能力。
更具体地，假设STA与AP之间建立了第一信道和第二信道两条信道，假如数据传输装置中的MAC控制模块根据MCS推算得出第一信道的上行最大承载能力，和下行最大承载能力均为65Mbps，第二信道的上行最大承载能力，和下行最大承载能力均为433Mbps，并得出第一信道上行的PRE＝10％，第一信道下行的PER＝15％，第二信道上行的PER＝20％，第二信道下行的PER＝25％。
此时，第一信道的上行实际承载能力：Y UL-L1＝65*(1-10％)＝58.5Mbps；第一信道的下行实际承载能力：Y DL-L1＝65*(1-15％)＝55.25Mbps。
第二信道的上行实际承载能力：Y UL-L2＝433*(1-20％)＝346.4Mbps；第二信道的下行实际承载能力：Y DL-L2＝433*(1-25％)＝324.75Mbps。
需要说明的是，步骤301与步骤302执行的先后顺序步骤不限定，步骤301可以与步骤302同时执行，也可以在步骤302之后执行。
303、确定多个备选信道组合。
多个信道组合中的每个信道组合中都包括至少一条上行备选信道和/或至少一条下行备选信道，该上行备选信道为N条信道中上行实际承载能力大于上行数据的数据量的信道，该下行备选信道为该N条信道中下行实际承载能力大于下行数据的数据量的信道。
需要说明的是，根据用户的设置，本申请实施例中多个信道组合中的每个信道组合中都包括至少一条上行备选信道和/或至少一条下行备选信道有三种可能：
第一种，每个信道组合中都包括至少一条上行备选信道和至少一条下行备选信道；
第二种，每个信道组合中都包括至少一条上行备选信道；
第三种，每个信道组合中都包括至少一条下行备选信道。
针对第一种可能：假如本实施例包括第一信道和第二信道两条信道，其中，根据步骤302可知，在一个实施例中，第一信道的上行实际承载能力Y UL-L1＝58.5Mbps；第一信道的下行实际承载能力Y DL-L1＝55.25Mbps，第二信道的上行实际承载能力Y UL-L2＝346.4Mbps；第二信道的下行实际承载能力Y DL-L2＝324.75Mbps。又得知目标业务的上行数据的数据量X UL-Re＝50Mbps，目标业务的下行数据的数据量X DL-Re＝55Mbps，此时：
Y UL-L1＞X UL-Re；Y UL-L2＞X UL-Re；Y DL-L1＞X DL-Re；Y DL-L2＞X DL-Re；
此时的备选信道组合有第一备选信道组合：{第一信道(上行)，第二信道(下行)}， 以及第二备选信道组合：{第一信道(下行)，第二信道(上行)}。
需要说明的是，如果N条信道组合中不存在上行实际承载数据大于上行数据的数据量的信道，则此时可以根据用户设定的规则将多条信道确定为目标业务的上行信道，同理，如果N条信道组合中不存在下行实际承载数据大于下行数据的数据量的信道，则此时可以根据用户设定的规则将多条信道确定为目标业务的下行信道，且上行信道和下行信道为不同信道。
或者，如果N条信道组合中不存在上行实际承载数据大于上行数据的数据量的信道，则此时可以根据用户设定的规则将信道组合中上行实际承载能力最大的信道确定为上行备选信道，如果N条信道组合中不存在下行实际承载数据大于下行数据的数据量的信道，则此时可以根据用户设定的规则将信道组合中下行实际承载能力最大的信道确定为下行备选信道，若此时上行备选信道和下行备选信道为不同信道，则此时将上行备选信道确定为目标业务的上行信道，将下行备选信道确定为目标业务的下行信道。
若此时上行备选信道和下行备选信道为同一信道，则此时再根据目标业务的上行待承载数据和目标业务的下行待承载数据的数据量大小确定上行信道或下行信道，将数据量较大的待承载数据所对应的备选信道确定为目标信道(如目标上行信道)，然后再从除目标信道以外的信道中确定另一个传输方向的信道(如目标下行信道)。
针对第二种可能：假如本实施例包括第一信道和第二信道两条信道，其中，根据步骤302可知，在一个实施例中，第一信道的上行实际承载能力Y UL-L1＝58.5Mbps，第二信道的上行实际承载能力Y UL-L2＝346.4Mbps。又得知目标业务的上行数据的数据量X UL-Re＝50Mbps，(如果是第二种可能，此时可以不获取第一信道和第二信道的下行实际承载能力)此时：
Y UL-L1＞X UL-Re；Y UL-L2＞X UL-Re；
此时的备选信道组合里有第一备选信道组合{第一信道(上行)}、和第二备选信道组合{第二信道(下行)}。
需要说明的是，如果N条信道组合中不存在上行实际承载数据大于上行数据的数据量的信道，则此时可以根据用户设定的规则将多条信道确定为目标业务的上行信道，或将上行实际承载能力最高的信道确定为上行信道。
针对第三种可能：假如本实施例包括第一信道和第二信道两条信道，其中，根据步骤302可知，在一个实施例中，第一信道的下行实际承载能力Y DL-L1＝55.25Mbps；第二信道的下行实际承载能力Y DL-L2＝324.75Mbps。又得知目标业务的下行数据的数据量X DL-Re＝55Mbps，(如果是第三种可能，此时可以不获取第一信道和第二信道的上行实际承载能力)此时：
Y DL-L1＞X DL-Re；Y DL-L2＞X DL-Re；
此时的备选信道组合有第一备选信道组合：{第二信道(下行)}，以及第二备选信道组合：{第一信道(下行)}。
需要说明的是，如果N条信道组合中不存在上行实际承载数据大于上行数据的数据量的信道，则此时可以根据用户设定的规则将多条信道确定为目标业务的上行信道，或将下 行实际承载能力最高的信道确定为下行信道。
需要说明的是，本申请实施例所说的用户设定的规则可以为本申请实施例所提及的业务需求与信道的匹配度所对应的规则。
304、根据业务需求与信道的匹配度从所述备选信道组合中确定目标信道组合。
目标信道组合中包括目标业务的上行信道和/或目标业务的下行信道。
针对上述第一种可能，根据业务需求与信道的匹配度从所述备选信道组合中确定目标信道组合至少可以包括以下几种方案。
(1)MAC控制模块确定备选信道组合对应的数据往返时延(round trip time，RTT),例如，确定第一备选信道组合的RTT，则STA中的MAC控制模块控制STA中与第一信道对应的MAC模块发送上行数据，得到上行时延，AP中的MAC控制模块控制AP中与第二信道对应的MAC模块发送下行数据，得到下行时延，由上行时延加上下行时延得到第一备选信道组合的RTT。将各个的备选信道组合都轮询完之后，再将各个组合中RTT最小的备选信道组合确定为目标备选信道组合，该目标备选信道组合中的上行信道即目标业务的上行信道，和/或该备选信道组合中的下行信道即目标业务的下行信道。
(2)MAC控制模块分别计算各个备选信道组合的相关和，将相关和最大的备选信道组合确定为目标备选信道组合，其中，可以按照公式S＝X UL-Re*Y UL+X DL-Re*Y DL计算第一备选信道组合和第二备选信道组合的相关和，其中，Y UL表示备选信道组合中的上行备选信道所对应的上行实际承载能力；Y DL表示备选信道组合中的下行备选信道所对应的下行实际承载能力，更具体地：
第一备选信道组合所对应的第一相关和：S 1＝X UL-Re*Y UL-L1+X DL-Re*Y DL-L2；
第二备选信道组合所对应的第二相关和：S 2＝X UL-Re*Y UL-L2+X DL-Re*Y DL-L1。
将S 1和S 2中值较大的相关和所对应的备选信道组合确定为目标备选信道组合。
(3)MAC控制模块分别计算各个备选信道组合的方差，将方差最小的备选信道组合确定为目标备选信道组合，其中，可以按照公式D＝(Y UL-X UL-Re) ^2+(Y DL-X DL-Re) ^2计算第一备选信道组合和第二备选信道组合的方差，更具体地：
第一备选信道组合所对应的第一方差：D 1＝(Y UL-L1-X UL-Re) ^2+(Y DL-L2-X DL-Re) ^2；
第二备选信道组合所对应的第二方差：D 2＝(Y UL-L2-X UL-Re) ^2+(Y DL-L1-X DL-Re) ^2。
将D 1和D 2中值较小的方差所对应的备选信道组合确定为目标备选信道组合。
(4)MAC控制模块根据RTT、相关和以及方差及RTT、相关和以及方差所对应的系数确定综合值，将综合值最大的备选信道组合确定为目标备选信道组合，其中，可以按照如下方式计算第一备选信道组合和第二备选信道组合的综合值：
第一备选信道组合中所对应的第一综合值：Z 1＝a 1*R 1+a 2*S 1+a 3*D 1；
第一备选信道组合中所对应的第一综合值：Z 2＝a 1*R 2+a 2*S 2+a 3*D 2。
将Z 1和Z 2中值较小的综合值所对应的备选信道组合确定为目标备选信道组合，其中，上述R 1为为第一备选信道组合所对应的RTT，R 2为第二备选信道组合所对应的RTT，a 1为RTT所对应的系数，a 2为相关和所对应的系数，a 3为方差所对应的系数，其中，a 1和a 3为负数，a 2为正数。
针对上述第二种可能，根据业务需求与信道的匹配度从所述备选信道组合中确定目标信道组合至少可以包括以下几种方案。
(1)MAC控制模块控制STA中与第一信道对应的MAC模块发送上行数据，得到第一上行时延，控制与第二信道对应的MAC模块发送上行数据，得到第二上行时延，将各个的备选信道组合都轮询完之后，将上行时延最小的备选信道组合确定为目标备选信道组合。
(2)将各个备选信道组合中上行实际承载能力最大的信道所对应的备选信道组合确定为目标备选信道组合。
针对上述第三种可能，根据业务需求与信道的匹配度从所述备选信道组合中确定目标信道组合至少可以包括以下几种方案。
(1)MAC控制模块控制STA中与第一信道对应的MAC模块发送下行数据，得到第一下行时延，控制与第二信道对应的MAC模块发送下行数据，得到第二下行时延，将各个的备选信道组合都轮询完之后，将下行时延最小的备选信道组合确定为目标备选信道组合。
(2)将各个备选信道组合中下行实际承载能力最大的信道所对应的备选信道组合确定为目标备选信道组合。
需要说明的是，如图4a所示，本申请实施例的一些应用场景中，信道个数为3个，分别为第一信道、第二信道和第三信道，假如此时待承载业务有3D互动电影、微信这两个业务，其中，3D互动电影为高优先级的延迟敏感业务，微信业务为低优先级的延迟不敏感业务，则此时将3D互动电影确定为目标业务。
假如此时，Y UL-L1＞X UL-Re，Y DL-L2＞X DL-Re则将第一信道确定为3D互动电影业务的上行信道，将第二信道确定为3D互动电影业务的下行信道，而第三信道可以同时承载微信业务的上行数据以及下行数据。
假如此时，Y DL-L2＜X DL-Re，而Y DL-L2+Y DL-L3＞X DL-Re，则此时可以考虑将第三信道的业务方向确定为3D互动电影业务的下行备选信道。
假如此时，Y UL-L1＜X UL-Re，而Y UL-L1+Y UL-L3＞X UL-Re，则此时可以考虑将第三信道的业务方向确定为3D互动电影业务的上行备选信道。
305、发送信道传输信息至对端。
信道传输信息指示上述N个信道中的哪些信道为目标业务的上行信道，哪些信道为目标业务的下行信道，在本实施例中，当数据传输装置为STA时，对端为AP，当数据传输装置为AP时，对端为STA。
假如STA侧的MAC控制模块得出了信道传输信息，则此时需要将该信道传输信息发送至AP侧的MAC控制模块，使得两端的MAC控制模块进行传输约定，例如信道传输信息中指示第一信道为上行信道、第二信道为下行信道，则此时，STA侧的MAC控制模块将控制STA中的第一信道对应的MAC模块和RF模块发送上行待承载数据至AP侧，AP侧的MAC控制模块将控制AP中的第二信道对应的MAC模块和RF模块发送下行待承载数据至MAC侧，此时上行待承载数据在一个信道发送数据，下行待承载数据在另一个信道发送数据，由于上下行数据在不同的信道发送，可以有效避免上下行数据的碰撞，并减少数据等待的时延。
如图4b所示，本申请实施例中，当STA与AP之间建立了第一信道和第二信道两个信 道时，STA的显示界面会显示两个信道以及两个信道的链路收发方向，如图4b所示，屏幕上方的WI-FI图标中的“1”表示第一信道，“2”表示第二信道，箭头向上表示该信道为上行信道，箭头向下表示该信道为下行信道，图4b中的第一信道为上行信道，第二信道为下行信道。
可选地，本申请除了发送信道传输信息至对端之外，在确定信道传输信道之前，还可能发送目标业务的待承载数据的数据量、信道的实际承载能力等信息至对端，让对端中的MAC控制模块根据这些信息确认信道信息。
需要说明的是，当确定了上行信道和/或下行信道之后，但目标业务对应的待承载数据的数据量、信道的实际承载能力等的变化超过阈值时(该阈值可以为10Mbps，阈值的具体数值此处不做限定)，此时需要重新执行步骤301至步骤305。
306、通过上行信道传输上行数据，和/或，通过下行信道传输下行数据。
当确定了上行信道以及下行信道之后，STA侧的MAC控制模块会控制与该上行信道相对应的MAC模块发送与上行数据对应的上行数据，AP侧的MAC控制模块会控制与该下行信道相对应的MAC模块发送下行数据对应的下行数据。
需要说明的是，本申请实施例中的数据传输方法同样适用于多个物理STA与多个AP相连接的场景，此时需要尽量将频点相同或者带宽有重叠的信道安排承载相同方向的业务，以减少碰撞和等待的时延。
示例性的，如图4c所示，本申请实施例中的目标业务可以包括第一目标业务和第二目标业务，STA包括第一STA和第二STA，AP包括第一AP和第二AP，其中，第一STA和第一目标业务相对应，第二STA和第二目标业务相对应，第一STA种包括两个VSTA，第二STA种包括两个VSTA，其中，第一STA通过自己的一个VSTA向第一AP发送第一目标业务对应的上行数据，第二STA通过自己的一个VSTA向第一AP发送第二目标业务对应的上行数据，相应的，第一STA通过自己的另一个VSTA接收第二AP发送的与第一目标业务对应的下行数据，第二STA通过自己的另一个VSTA接收第二AP发送的与第二目标业务对应的下行数据，AP控制器则对第一AP和第二AP各自的MAC模块进行统一调度。
图4c中，信道链接1表示为第一目标业务指定的上行信道，信道链接2表示为第一目标业务指定的下行信道，信道链接3表示为第二目标业务指定的上行信道，信道链接4表示为第二目标业务指定的下行信道。
此时，如果上行信道信道链接1和上行信道信道链接3所对应的频率资源相同或部分重叠时，则第一STA和第二STA可以采用正交频分复用(orthogonal frequency division multiple access，OFDMA)的方式进行上行数据传输；例如：信道链接1和信道链接3所对应频率资源相同，且该频率资源的频带带宽为20M，根据OFDMA的原理，可以将该20M带宽的频率资源划分为64个子载波，然后将64个子载波分成两组，其中一组子载波对应信道连接1，另一组子载波对应信道连接3，则第一STA和第二STA可以采用这两组子载波，以OFDMA的方式上行传输各自业务对应的上行数据。
或，如果上行信道信道链接1和上行信道信道链接3所对应的时频资源相同或部分重叠时，则此时第一STA和第二STA可以采用空分复用(multi-user multiple-input  multiple-output，MU-MIMO)的方式进行上行数据传输；此时信道链接1和信道链接3通过MU-MIMO双发双收，分成两个空时流，分别对应信道链接1和信道链接3。
同理，如果下行信道信道链接2和下行信道信道链接4所对应的频率资源相同或部分重叠时，则此时第一STA和第二STA可以采用OFDMA的方式进行下行数据传输；
或，如果下行信道信道链接2和下行信道信道链接4所对应的时频资源相同或部分重叠时，则此时第一STA和第二STA可以采用MU-MIMO的方式进行下行数据传输。
如果上行信道信道链接1和上行信道信道链接3所对应的频率资源相同或部分重叠，且下行信道信道链接2和下行信道信道链接4所对应的频率资源相同或部分重叠时，则第一STA和第二STA采用OFDMA的方式分别进行上行数据传输和下行数据的传输。
如果上行信道信道链接1和上行信道信道链接3所对应的时频资源相同或部分重叠，且下行信道信道链接2和下行信道信道链接4所对应的时频资源相同或部分重叠时，则第一STA和第二STA采用MU-MIMO的方式分别进行上行数据传输和下行数据的传输。
在图4c中，第一AP分别与第一STA以及第二STA连接，第二AP也分别与第一STA以及第二STA连接；需要说明的是，只存在第一AP或只存在第二AP与第一STA以及第二STA分别连接的情况，即一个AP与多个STA连接的情况，同样适用于本方法。
同理，多个AP与一个STA连接的情况，同样也适用上述方法，具体此处不做赘述。
其中，本申请实施例中的数据传输装置在确定了上行信道和/或下行信道之后，还可以根据数据的发送方向按照预置周期在上行信道和/或下行信道发送管理帧或控制帧，保持对上行信道和/或下行信道的占用，以减少第三方(例如其他AP)的干扰，预置周期的时间长度此处不做限定。
此外，本申请实施例中的数据传输装置还可以调整MAC层的配置参数，以减少数据发送的等待时间。
本申请实施例中，首先STA或AP根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从所述N条信道中分别为所述目标业务指定上行信道和/或下行信道，其中，所述N条信道为站点STA与接入点AP之间的信道，且所述N条信道中的每条信道均具有上行传输和下行传输的能力，所述待承载数据包括：上行数据以及下行数据，所述N为大于1的整数；然后通过所述上行信道传输所述上行数据，和/或，通过所述下行信道传输所述下行数据。本实施例中，上行信道只能用于传输所述上行数据对应的上行数据，而不用于传输下行数据对应的下行数据，因此STA可以直接通过确定的上行信道向AP发送上行数据，不需要等待AP完成下行数据的发送，既可以减少传输时延，又可避免该上行信道上的数据碰撞。同样地，下行信道也只能用于传输下行数据对应的下行数据，不用于传输上行数据，AP可以直接通过确定的下行信道向STA发送上行数据，不需要等待STA完成上行数据的发送，既可以减少传输时延，又可以避免该下行信道上的数据碰撞。
上面对本申请实施例中的方法进行了描述，下面对本申请实施例中的数据传输装置进行描述，请参阅图5，本申请实施例中数据传输装置500的一个实施例包括：
处理模块501，用于根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从该N条信道中分别为该目标业务指定上行信道和/或下行信道，其中，该 N条信道为站点STA与接入点AP之间的信道，且该N条信道中的每条信道均具有上行传输和下行传输的能力，该待承载数据包括：上行数据以及下行数据，该N为大于1的整数；
发送模块502，用于通过该上行信道中传输该上行数据，和/或，通过该下行信道中传输该下行数据。
需要说明的是，本申请实施例中的数据传输装置可以为AP也可以为STA，还可以为位于AP和STA之外的控制器(如AP控制器)，数据传输装置具体此处不做限定，本申请实施例中的步骤可以由AP或STA单独执行，也可以是AP和STA共同执行或交互执行。
其中，本申请实施例中的处理模块501可以为基带处理器，可以集成在有WI-FI芯片中，也可以为其他处理器，具体此处不做限定；本申请实施例中的发送模块502可以为射频发射电路，可以集成在有WI-FI芯片中，也可以其他发射器件，具体此处不做限定。
在一些实施例中，该处理模块501具体用于：确定多个备选信道组合，每个备选信道组合包括至少一条上行备选信道和/或至少一条下行备选信道，该上行备选信道为该N条信道中上行实际承载能力大于该上行数据的数据量的信道，该下行备选信道为该N条信道中下行实际承载能力大于该下行数据的数据量的信道；根据业务需求与信道的匹配度从该备选信道组合中确定目标信道组合，该目标信道组合包括该上行信道和/或该下行信道。
在一些实施例中，该N大于或等于3，该处理模块501还用于：将该N条信道中除了该上行信道和/或该下行信道以外的信道确定为目标信道，该目标信道用于传输该待承载业务中除了该目标业务以外的业务对应的待承载数据，该目标信道可进行上行数据传输和/或下行数据传输。
在一些实施例中，该处理模块501还具体用于：确定该每个备选信道组合对应的数据传输时延；将该数据传输时延中值最小的数据传输时延所对应的备选信道组合确定为目标信道组合。
在一些实施例中，该处理模块501还具体用于：通过如下公式计算每个备选信道组合对应的相关和S：S＝X UL-Re*Y UL+X DL-Re*Y DL，其中，该X UL-Re表示该上行数据，该X DL-Re表示该下行数据，该Y UL表示该备选信道组合中的上行备选信道所对应的上行实际承载能力；该Y DL表示该备选信道组合中的下行备选信道所对应的下行实际承载能力；将每个备选信道组合对应的相关和中值最大的相关和所对应的备选信道组合确定为该目标信道组合。
在一些实施例中，该备选信道组合包括第一备选信道组合和第二备选信道组合，该处理模块501还具体用于：按照如下方式计算每个备选信道组合对应的方差D：D＝(Y UL-X UL-Re) ^2+(Y DL-X DL-Re) ^2，其中，该X UL-Re表示该上行数据，该X DL-Re表示该下行数据，该Y UL表示该备选信道组合中的上行备选信道所对应的上行实际承载能力；该Y DL表示该备选信道组合中的下行备选信道所对应的下行实际承载能力；
在一些实施例中，该处理模块501还用于：获取该目标业务的业务身份标识ID；根据预置的资料库以及该业务ID获取该目标业务的上行理论数据的数据量、该目标业务的下行理论数据的数据量以及该目标业务的优先级；根据该上行理论数据的数据量以及该优先级确定该上行数据的数据量；和/或，根据该下行理论数据的数据量以及该优先级确定该下行数据的数据量。
在一些实施例中，该处理模块501还用于：获取该N条信道中每条信道的最大承载能力，该最大承载能力包括上行最大承载能力和下行最大承载能力；获取该信道的上行信道环境和下行信道环境；根据该上行最大承载能力和该上行信道环境确定该信道的上行实际承载能力，根据该最大承载能力和该下行信道环境确定该信道的下行实际承载能力。
在一些实施例中，该发送模块502还用于：发送信道传输信息至对端，该对端为该STA或该AP，该信道传输信息指示该信道为上行信道或下行信道。
在一些实施例中，该目标业务包括第一目标业务和第二目标业务，该STA包括第一STA和第二STA，该第一目标业务为该第一STA与该AP之间的业务，该第二目标业务为该第二STA与该AP之间的业务；当为该第一目标业务所指定的上行信道和/或下行信道所对应的频率资源，与为该第二目标业务所指定的上行信道和/或下行信道所对应的频率资源相同或部分重叠时，该发送模块502具体用于，采用正交频分复用OFDM的方式进行上行数据传输和/或下行数据传输。
在一些实施例中，该目标业务包括第一目标业务和第二目标业务，该STA包括第一STA和第二STA，该第一目标业务为该第一STA与该AP之间的业务，该第二目标业务为该第二STA与该AP之间的业务；当为该第一目标业务所指定的上行信道和/或下行信道所对应的时频资源，与为该第二目标业务所指定的上行信道和/或下行信道所对应的时频资源相同或部分重叠时，该发送模块502具体用于，采用空分复用MU-MIMO的方式进行上行数据传输和/或下行数据传输。
在一些实施例中，该发送模块502还用于：根据预置周期在该上行信道和/或该下行信道中发送管理帧或控制帧。
在一些实施例中，该处理模块501还用于：调整媒体访问控制MAC层的配置参数，以减少数据发送的等待时延。
参阅图6所示，本申请实施例还提供一种数据传输装置600包括：一个或多个处理器602、接收器603、发送器604、存储器601以及总线605。其中，一个或多个处理器602、接收器603、发送器604、存储器601通过总线605相互连接。
其中，所述一个或多个处理器602，用于后台运行至少一个应用程序，并根据用户数据清理至少一个目标应用程序。其中，所述用户数据为基于用户使用应用的历史记录得到的统计数据；所述目标应用程序为根据所述用户数据确定的满足预设规则的应用程序。
其中，图3所对应的方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
其中，所述存储器601中存储一个或多个程序。所述存储器601可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(Application，APP)等。存储数据区可存储根据数据传输装置600的使用所创建的数据等。此外，存储器601可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
其中，所述一个或多个处理器602可以是中央处理器(Central Processing Unit，CPU)，通用处理器，数字信号处理器(Digital Signal Processor，DSP)，专用集成电路 (Application-Specific Integrated Circuit，ASIC)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。
其中，所述接收器603和发送器604用于数据传输装置600和其他设备互相通信。
总线605可以是外设部件互连标准(Peripheral Component Interconnect，PCI)总线或扩展工业标准结构(Extended Industry Standard Architecture，EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图6中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
参阅图7所示，本申请实施例还提供一种数据传输系统700包括：一个或多个处理器702、接收器703、发送器704、存储器701以及总线705。其中，一个或多个处理器702、接收器703、发送器704、存储器701通过总线705相互连接。
其中，所述一个或多个处理器702，用于后台运行至少一个应用程序，并根据用户数据清理至少一个目标应用程序。其中，所述用户数据为基于用户使用应用的历史记录得到的统计数据；所述目标应用程序为根据所述用户数据确定的满足预设规则的应用程序。
其中，图3所对应的方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
其中，所述存储器701中存储一个或多个程序。所述存储器701可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(Application，APP)等。存储数据区可存储根据数据传输系统700的使用所创建的数据等。此外，存储器701可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
其中，所述一个或多个处理器702可以是中央处理器(Central Processing Unit，CPU)，通用处理器，数字信号处理器(Digital Signal Processor，DSP)，专用集成电路(Application-Specific Integrated Circuit，ASIC)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。
其中，所述接收器703和发送器704用于数据传输系统700和其他设备互相通信。
总线705可以是外设部件互连标准(Peripheral Component Interconnect，PCI)总线或扩展工业标准结构(Extended Industry Standard Architecture，EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图7中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
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申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、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可读存储介质中，或者从一个计算机可读存储介质向另一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(DSL))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、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存储的任何可用介质或者是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(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (29)

  1. 一种数据传输方法，其特征在于，包括：
    根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从所述N条信道中分别为所述目标业务指定上行信道和/或下行信道，其中，所述N条信道为站点STA与接入点AP之间的信道，且所述N条信道中的每条信道均具有上行传输和下行传输的能力，所述待承载数据包括：上行数据以及下行数据，所述N为大于1的整数；
    通过所述上行信道传输所述上行数据，和/或，通过所述下行信道传输所述下行数据。
  2. 根据权利要求1所述的方法，其特征在于，所述根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从所述N条信道中分别为所述目标业务指定上行信道和/或下行信道包括：
    确定多个备选信道组合，每个备选信道组合包括至少一条上行备选信道和/或至少一条下行备选信道，所述上行备选信道为所述N条信道中上行实际承载能力大于所述上行数据的数据量的信道，所述下行备选信道为所述N条信道中下行实际承载能力大于所述下行数据的数据量的信道；
    根据业务需求与信道的匹配度从所述备选信道组合中确定目标信道组合，所述目标信道组合包括所述上行信道和/或所述下行信道。
  3. 根据权利要求2所述的方法，其特征在于，所述N大于或等于3，所述目标业务为待承载业务中优先级最高的业务，所述方法还包括：
    将所述N条信道中除了所述上行信道和/或所述下行信道以外的信道确定为目标信道，所述目标信道用于传输所述待承载业务中除了所述目标业务以外的业务对应的待承载数据，所述目标信道可进行上行数据传输和/或下行数据传输。
  4. 根据权利要求2或3所述的方法，其特征在于，所述根据业务需求与信道的匹配度从所述备选信道组合中确定目标信道组合包括：
    确定所述每个备选信道组合对应的数据传输时延；
    将所述数据传输时延中值最小的数据传输时延所对应的备选信道组合确定为目标信道组合。
  5. 根据权利要求2或3所述的方法，其特征在于，所述根据业务需求与信道的匹配度从所述备选信道组合中确定目标信道组合包括：
    通过如下公式计算每个备选信道组合对应的相关和S：
    S＝X UL-Re*Y UL+X DL-Re*Y DL，其中，所述X UL-Re表示所述上行数据，所述X DL-Re表示所述下行数据，所述Y UL表示所述备选信道组合中的上行备选信道所对应的上行实际承载能力；所述Y DL表示所述备选信道组合中的下行备选信道所对应的下行实际承载能力；
    将每个备选信道组合对应的相关和中值最大的相关和所对应的备选信道组合确定为所述目标信道组合。
  6. 根据权利要求2或3所述的方法，其特征在于，所述备选信道组合包括第一备选信道组合和第二备选信道组合，所述根据业务需求与信道的匹配度从所述备选信道组合中确定目标信道组合包括：
    按照如下方式计算每个备选信道组合对应的方差D：
    D＝(Y UL-X UL-Re) ^2+(Y DL-X DL-Re) ^2，其中，所述X UL-Re表示所述上行数据，所述X DL-Re表示所述下行数据，所述Y UL表示所述备选信道组合中的上行备选信道所对应的上行实际承载能力；所述Y DL表示所述备选信道组合中的下行备选信道所对应的下行实际承载能力。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从所述N条信道中分别为所述目标业务指定上行信道和/或下行信道之前，所述方法还包括：
    获取所述目标业务的业务身份标识ID；
    根据预置的资料库以及所述业务ID获取所述目标业务的上行理论数据的数据量、所述目标业务的下行理论数据的数据量以及所述目标业务的优先级；
    根据所述上行理论数据的数据量以及所述优先级确定所述上行数据的数据量；
    和/或，
    根据所述下行理论数据的数据量以及所述优先级确定所述下行数据的数据量。
  8. 根据权利要求1至7中任一项所述的方法，其特征在于，所述根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从所述N条信道中分别为所述目标业务指定上行信道和/或下行信道之前，所述方法还包括：
    获取所述N条信道中每条信道的最大承载能力，所述最大承载能力包括上行最大承载能力和下行最大承载能力；
    获取所述信道的上行信道环境和下行信道环境；
    根据所述上行最大承载能力和所述上行信道环境确定所述信道的上行实际承载能力，根据所述最大承载能力和所述下行信道环境确定所述信道的下行实际承载能力。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述通过所述上行信道传输所述上行数据，和/或，通过所述下行信道传输所述下行数据之前，所述方法还包括：
    发送信道传输信息至对端，所述对端为所述STA或所述AP，所述信道传输信息指示所述信道为上行信道或下行信道。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述目标业务包括第一目标业务和第二目标业务，所述STA包括第一STA和第二STA，所述第一目标业务为所述第一STA与所述AP之间的业务，所述第二目标业务为所述第二STA与所述AP之间的业务；
    当为所述第一目标业务所指定的上行信道和/或下行信道所对应的频率资源，与为所述第二目标业务所指定的上行信道和/或下行信道所对应的频率资源相同或部分重叠时，所述第一STA和所述第二STA采用正交频分复用OFDM的方式进行上行数据传输和/或下行数据传输。
  11. 根据权利要求1至9中任一项所述的方法，其特征在于，所述目标业务包括第一目标业务和第二目标业务，所述STA包括第一STA和第二STA，所述第一目标业务为所述第一STA与所述AP之间的业务，所述第二目标业务为所述第二STA与所述AP之间的业务；
    当为所述第一目标业务所指定的上行信道和/或下行信道所对应的时频资源，与为所述第二目标业务所指定的上行信道和/或下行信道所对应的时频资源相同或部分重叠时，所述 第一STA和所述第二STA采用空分复用MU-MIMO的方式进行上行数据传输和/或下行数据传输。
  12. 根据权利要求1至11中任一项所述的方法，其特征在于，所述根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从所述N条信道中分别为所述目标业务指定上行信道和/或下行信道之后，所述方法还包括：
    根据预置周期在所述上行信道和/或所述下行信道中发送管理帧或控制帧。
  13. 根据权利要求1至11中任一项所述的方法，其特征在于，所述方法还包括：
    调整媒体访问控制MAC层的配置参数，以减少数据发送的等待时延。
  14. 一种数据传输装置，其特征在于，包括：
    处理模块，用于根据N条信道中每条信道的实际承载能力以及目标业务的待承载数据的数据量，从所述N条信道中分别为所述目标业务指定上行信道和/或下行信道，其中，所述N条信道为站点STA与接入点AP之间的信道，且所述N条信道中的每条信道均具有上行传输和下行传输的能力，所述待承载数据包括：上行数据以及下行数据，所述N为大于1的整数；
    发送模块，用于通过所述上行信道传输所述上行数据，和/或，通过所述下行信道传输所述下行数据。
  15. 根据权利要求14所述的装置，其特征在于，所述处理模块具体用于：
    确定多个备选信道组合，每个备选信道组合包括至少一条上行备选信道和/或至少一条下行备选信道，所述上行备选信道为所述N条信道中上行实际承载能力大于所述上行数据的数据量的信道，所述下行备选信道为所述N条信道中下行实际承载能力大于所述下行数据的数据量的信道；
    根据业务需求与信道的匹配度从所述备选信道组合中确定目标信道组合，所述目标信道组合包括所述上行信道和/或所述下行信道。
  16. 根据权利要求15所述的装置，其特征在于，所述N大于或等于3，所述处理模块还用于：
    将所述N条信道中除了所述上行信道和/或所述下行信道以外的信道确定为目标信道，所述目标信道用于传输所述待承载业务中除了所述目标业务以外的业务对应的待承载数据，所述目标信道可进行上行数据传输和/或下行数据传输。
  17. 根据权利要求15或16所述的装置，其特征在于，所述处理模块还具体用于：
    确定所述每个备选信道组合对应的数据传输时延；
    将所述数据传输时延中值最小的数据传输时延所对应的备选信道组合确定为目标信道组合。
  18. 根据权利要求15或16所述的装置，其特征在于，所述处理模块还具体用于：
    通过如下公式计算每个备选信道组合对应的相关和S：
    S＝X UL-Re*Y UL+X DL-Re*Y DL，其中，所述X UL-Re表示所述上行数据，所述X DL-Re表示所述下行数据，所述Y UL表示所述备选信道组合中的上行备选信道所对应的上行实际承载能力；所述Y DL表示所述备选信道组合中的下行备选信道所对应的下行实际承载能力；
    将每个备选信道组合对应的相关和中值最大的相关和所对应的备选信道组合确定为所述目标信道组合。
  19. 根据权利要求15或16所述的装置，其特征在于，所述备选信道组合包括第一备选信道组合和第二备选信道组合，所述处理模块还具体用于：
    按照如下方式计算每个备选信道组合对应的方差D：
    D＝(Y UL-X UL-Re) ^2+(Y DL-X DL-Re) ^2，其中，所述X UL-Re表示所述上行数据，所述X DL-Re表示所述下行数据，所述Y UL表示所述备选信道组合中的上行备选信道所对应的上行实际承载能力；所述Y DL表示所述备选信道组合中的下行备选信道所对应的下行实际承载能力。
  20. 根据权利要求14至19中任一项所述的装置，其特征在于，所述处理模块还用于：
    获取所述目标业务的业务身份标识ID；
    根据预置的资料库以及所述业务ID获取所述目标业务的上行理论数据的数据量、所述目标业务的下行理论数据的数据量以及所述目标业务的优先级；
    根据所述上行理论数据的数据量以及所述优先级确定所述上行数据的数据量；
    和/或，
    根据所述下行理论数据的数据量以及所述优先级确定所述下行数据的数据量。
  21. 根据权利要求14至15中任一项所述的装置，其特征在于，所述处理模块还用于：
    获取所述N条信道中每条信道的最大承载能力，所述最大承载能力包括上行最大承载能力和下行最大承载能力；
    获取所述信道的上行信道环境和下行信道环境；
    根据所述上行最大承载能力和所述上行信道环境确定所述信道的上行实际承载能力，根据所述最大承载能力和所述下行信道环境确定所述信道的下行实际承载能力。
  22. 根据权利要求14至19中任一项所述的装置，其特征在于，所述发送模块还用于：
    发送信道传输信息至对端，所述对端为所述STA或所述AP，所述信道传输信息指示所述信道为上行信道或下行信道。
  23. 根据权利要求14至22中任一项所述的装置，其特征在于，所述目标业务包括第一目标业务和第二目标业务，所述STA包括第一STA和第二STA，所述第一目标业务为所述第一STA与所述AP之间的业务，所述第二目标业务为所述第二STA与所述AP之间的业务；
    当为所述第一目标业务所指定的上行信道和/或下行信道所对应的频率资源，与为所述第二目标业务所指定的上行信道和/或下行信道所对应的频率资源相同或部分重叠时，所述发送模块具体用于，采用正交频分复用OFDM的方式进行上行数据传输和/或下行数据传输。
  24. 根据权利要求14至22中任一项所述的装置，其特征在于，所述目标业务包括第一目标业务和第二目标业务，所述STA包括第一STA和第二STA，所述第一目标业务为所述第一STA与所述AP之间的业务，所述第二目标业务为所述第二STA与所述AP之间的业务；
    当为所述第一目标业务所指定的上行信道和/或下行信道所对应的时频资源，与为所述第二目标业务所指定的上行信道和/或下行信道所对应的时频资源相同或部分重叠时，所述 发送模块具体用于，采用空分复用MU-MIMO的方式进行上行数据传输和/或下行数据传输。
  25. 根据权利要求14至24中任一项所述的装置，其特征在于，所述发送模块还用于：
    根据预置周期在所述上行信道和/或所述下行信道中发送管理帧或控制帧。
  26. 根据权利要求14至24中任一项所述的装置，其特征在于，所述处理模块还用于：
    调整媒体访问控制MAC层的配置参数，以减少数据发送的等待时延。
  27. 一种数据传输系统，所述数据传输系统包括站点STA和接入点AP，所述STA和所述AP之间存在N条信道，所述N为大于1的整数，所述数据传输系统执行如权利要求1至13中任一项所述的方法。
  28. 一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如权利要求1-13任意一项所述的方法。
  29. 一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行如权利要求1-13任意一项所述的方法。
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CN102523627A (zh) * 2011-12-08 2012-06-27 电信科学技术研究院 一种数据传输方法及装置
CN103002594A (zh) * 2012-12-05 2013-03-27 中兴通讯股份有限公司 直接通信信道建立方法、装置及系统
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EP2365725A2 (en) * 2010-03-12 2011-09-14 Stefan Mangold Cellular wireless LAN with frequency division multiplex in TV white space
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