WO2021004488A1 - 数据传输方法和装置 - Google Patents

数据传输方法和装置 Download PDF

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Publication number
WO2021004488A1
WO2021004488A1 PCT/CN2020/100897 CN2020100897W WO2021004488A1 WO 2021004488 A1 WO2021004488 A1 WO 2021004488A1 CN 2020100897 W CN2020100897 W CN 2020100897W WO 2021004488 A1 WO2021004488 A1 WO 2021004488A1
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Prior art keywords
application
terminal device
broadcast
cts message
access point
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PCT/CN2020/100897
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English (en)
French (fr)
Inventor
林俊如
杨能
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华为技术有限公司
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Publication of WO2021004488A1 publication Critical patent/WO2021004488A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

Definitions

  • This application relates to the field of communication technology, and in particular to a data transmission method and device.
  • such applications have high requirements for real-time data transmission.
  • such applications may be real-time voice applications or game applications.
  • voice applications For certain types of applications deployed on terminal devices, such applications have high requirements for real-time data transmission.
  • game applications For certain types of applications deployed on terminal devices, such applications have high requirements for real-time data transmission.
  • applications may be real-time voice applications or game applications.
  • During the operation of this type of application if other devices in the same wireless network that it is connected to are also transmitting large amounts of data, it will affect the data transmission of this type of application, which will lead to the loss of data transmission of this type of application. The time delay is large.
  • the point coordination function (PCF) principle can be used to centrally control access to the medium.
  • a wireless access point (AP) is used as a central coordination controller, and the terminal devices connected to it are sequentially polled according to its internal polling list (polling list).
  • the target terminal device uses superframes as the cycle for data transmission.
  • Each superframe cycle includes a contention-free phase and a contention phase.
  • the target terminal device performs data transmission in the contention-free phase, while other devices cannot take the initiative Performing the operation of data transmission is equivalent to reserving resources for this type of application and performing data transmission through the reserved resources, thereby reducing the data transmission delay of this type of application.
  • This application provides a data transmission method and device. During the operation of real-time applications, the probability of other devices affecting the implementation of applications is reduced and the hardware of the terminal is not required to have PCF capabilities, thereby helping to reduce real-time applications. The time delay is wider and more convenient.
  • an embodiment of the present application provides a data transmission method, which is applied to a terminal device, and the terminal device runs a first application program.
  • the data transmission method may include:
  • the running status of the first application may be whether there is a data packet of the first application to be sent in the buffer of the terminal, or it may be the first application
  • the application delay can also be the receiving interval of the data packet of the first application, etc.
  • the first application may be an application with a small amount of data but a high data transmission delay requirement.
  • the first application may be an online game application and/or a real-time voice application.
  • the delay in the embodiment of the present application may be a request-response delay, or may also be a value that is calculated based on a series of uplink and downlink packets to characterize network transmission quality.
  • the terminal device can actively broadcast the clear to send CTS message according to the running status of the first application, so as to instruct other terminal devices to be in all locations according to the address of the wireless access point through the CTS message.
  • Reserving network resources for the terminal device and the wireless access point within the resource reservation time period; in this way, the terminal device can send uplink data to the wireless access point through the reserved network resource during the resource reservation time period; and/ Or, within the resource reservation time period, receiving downlink data sent by the wireless access point through the reserved network resources can reduce to a certain extent the terminal device (may also include the first application running on the terminal device) from being affected Therefore, it helps to reduce the data transmission delay of the first application in the data transmission process.
  • broadcasting the clear to send CTS message according to the running status of the first application may include:
  • the CTS message is broadcast.
  • the terminal device by detecting that there is a data packet of the first application in the sending buffer, if there is a data packet of the first application to be sent in the sending buffer of the terminal device, in order to avoid data transmission by other terminal devices Influencing the current operation of the first application, the terminal device can broadcast a CTS message to instruct other terminal devices to pre-register the terminal device and the wireless access point within the resource reservation period according to the address of the wireless access point through the CTS. Keep network resources.
  • the terminal device can send uplink data to the wireless access point through the reserved network resources within the resource reservation time period, which can reduce the terminal device to a certain extent (and may also include the first application running on the terminal device) The probability of being affected thereby helps to reduce the data transmission delay of the first application in the data transmission process.
  • broadcasting the clear to send CTS message according to the running status of the first application may include:
  • the CTS message is broadcast.
  • the terminal device by detecting whether the application practice of the first application is greater than the first threshold, and by detecting that there is a data packet of the first application in the transmission buffer, the application delay of the first application When it is greater than the first threshold and the data packet of the first application exists in the transmission buffer of the terminal device, in order to avoid the data transmission of other terminal devices from affecting the current operation of the first application, the terminal device can broadcast a CTS message to pass the The CTS instructs other terminal devices to reserve network resources for the terminal device and the wireless access point within the resource reservation time period according to the address of the wireless access point.
  • the terminal device can send uplink data to the wireless access point through the reserved network resources within the resource reservation time period, which can reduce the terminal device to a certain extent (and may also include the first application running on the terminal device) The probability of being affected thereby helps to reduce the data transmission delay of the first application in the data transmission process.
  • broadcasting the clear to send CTS message according to the operating condition of the first application may include:
  • the terminal device does not receive the second data packet after the first data packet within the predetermined time
  • the CTS message is broadcast, and the predetermined time is the predicted receiving time of the second data packet.
  • the terminal device can broadcast a CTS message to instruct other terminal devices to reserve resources based on the address of the wireless access point through the CTS. Reserve network resources for terminal devices and wireless access points during the time period. In this way, the terminal device can receive the downlink data sent by the wireless access point through the reserved network resources within the resource reservation time period, which can reduce the terminal device (also including the first application running on the terminal device) to a certain extent. ) Is affected, thereby helping to reduce the data transmission delay of the first application in the data transmission process.
  • broadcasting the clear to send CTS message according to the operating condition of the first application may include:
  • the CTS message is periodically broadcast.
  • the application of the first application is detected. If the application delay of the first application is greater than the second threshold, it means that the current data transmission delay of the first application is relatively large, and other devices have Data transmission may have an impact on the operation of the current first application.
  • the terminal device can periodically broadcast a CTS message to instruct other terminal devices to use the CTS according to the address of the wireless access point during the resource reservation time period. Terminal equipment and wireless access points reserve network resources. In this way, the terminal device can receive the downlink data sent by the wireless access point through the reserved network resources within the resource reservation time period, which can reduce the terminal device (also including the first application running on the terminal device) to a certain extent. ) Is affected, thereby helping to reduce the data transmission delay of the first application in the data transmission process.
  • broadcasting the clear to send CTS message according to the operating condition of the first application may include:
  • the CTS message is broadcast periodically; the broadcast period is related to the interval at which the terminal device receives the data packet of the first application.
  • the CTS message is broadcast within a preset time period
  • the data transmission method may further include:
  • the data transmission method may further include:
  • the broadcast of the CTS message is stopped after the preset time period ends, and after the broadcast of the CTS message is stopped, the application delay of the first application is detected, and the application delay of the first application is compared with the broadcast CTS message time.
  • the application delay of the first application is compared. If it is detected that the application delay of the first application increases after the CTS message is stopped broadcasting, that is, when the application delay of the first application increases, the data of other terminal devices is explained.
  • the transmission has an impact on the operation of the first application, resulting in a relatively long application delay of the first application.
  • the terminal device can continue Broadcast the CTS message to instruct other terminal devices to reserve network resources for the terminal device and the wireless access point within the resource reservation time period according to the address of the wireless access point through the CTS.
  • the terminal device can receive the downlink data sent by the wireless access point through the reserved network resources during the resource reservation period, which can reduce the probability of the first application being affected to a certain extent, thereby helping to reduce the first application.
  • the terminal device can stop broadcasting the CTS message.
  • an embodiment of the present application also provides a data transmission device, which is applied to a terminal device, and the terminal device runs a first application program.
  • the data transmission device may include:
  • the broadcasting unit is configured to broadcast a clear to send CTS message according to the running status of the first application; the CTS message includes a resource reservation time period and a receiver address, where the receiver address is the address of the wireless access point.
  • the sending unit is used to send uplink data to the wireless access point through the reserved network resources during the resource reservation time period; and/or the receiving unit is used to receive the wireless access point during the resource reservation time period Downlink data sent through reserved network resources.
  • the broadcasting unit is configured to broadcast the clear to send CTS message according to the operating condition of the first application, which may include:
  • the broadcasting unit is specifically configured to broadcast the CTS message when the data packet of the first application exists in the sending buffer of the terminal device.
  • the broadcasting unit is configured to broadcast the clear to send CTS message according to the operating condition of the first application, which may include:
  • the broadcasting unit is specifically configured to broadcast the CTS message when the application delay of the first application is greater than the first threshold and the data packet of the first application exists in the transmission buffer of the terminal device.
  • the broadcasting unit is configured to broadcast the clear to send CTS message according to the operating condition of the first application, which may include:
  • the receiving unit is further configured to receive the first data packet of the first application.
  • the broadcasting unit is specifically configured to broadcast a CTS message when the terminal device does not receive the second data packet after the first data packet within the predetermined time, and the predetermined time is the predicted receiving time of the second data packet.
  • the broadcasting unit is configured to broadcast the clear to send CTS message according to the operating condition of the first application, which may include:
  • the broadcasting unit is specifically configured to periodically broadcast the CTS message when the application delay of the first application is greater than the second threshold.
  • the broadcasting unit is configured to broadcast the clear to send CTS message according to the operating condition of the first application, which may include:
  • the broadcasting unit is specifically used to periodically broadcast CTS messages; wherein the broadcasting period is related to the interval at which the terminal device receives the data packet of the first application.
  • the CTS message is broadcast within a preset time period, and the broadcasting unit is also used to stop broadcasting the CTS message after the preset time period ends, and the preset time period is greater than at least one broadcast cycle.
  • the broadcasting unit after stopping broadcasting the CTS message, is also used to continue broadcasting the CTS message when the application delay of the first application increases; the application delay of the first application decreases In the case, the broadcast of the CTS message is terminated.
  • the broadcasting unit and the sending unit may be one module, that is, the functions of the broadcasting unit and the sending unit are realized through the same module.
  • the same module may be a module that uses the same communication port. Module.
  • the above-mentioned data transmission apparatus of the second aspect may be the terminal device itself, or may be a component (such as a chip or a circuit) that can be configured in the terminal device.
  • an embodiment of the present application further provides a data transmission device, which may include a processing circuit, an interface circuit, and a storage medium, where:
  • the interface circuit is used to send and receive information with other devices through instructions in the storage medium
  • the processing circuit is configured to run instructions in the storage medium to control the interface circuit to execute the data transmission method described in any one of the possible implementations of the first aspect.
  • an embodiment of the present application also provides a data transmission device.
  • the data transmission device may include a memory and a processor, where:
  • the memory is used to store program instructions
  • the processor is configured to read the program instructions in the memory, and execute the data transmission method described in any one of the possible implementation manners of the first aspect according to the program instructions in the memory.
  • an embodiment of the present application also provides a computer storage medium, including instructions, which when run by one or more processors, cause the data transmission device to execute any one of the possible implementations of the first aspect above The described data transmission method.
  • an embodiment of the present application further provides a chip on which a computer program is stored.
  • the computer program is executed by a processor, the data transmission method described in any one of the possible implementations of the first aspect is executed.
  • the terminal device can actively broadcast the clear to send CTS message according to the running status of the first application, so as to instruct other terminal devices to use the CTS message to instruct other terminal devices to use the address of the wireless access point according to the Reserving network resources for the terminal device and the wireless access point during the resource reservation time period; in this way, the terminal device can send uplink data to the wireless access point through the reserved network resources during the resource reservation time period; and /Or, within the resource reservation time period, receiving the downlink data sent by the wireless access point through the reserved network resources can reduce the terminal device (which may also include the first application running on the terminal device) to a certain extent. The probability of impact, thereby helping to reduce the data transmission delay of the first application in the data transmission process.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the application
  • FIG. 2 is a schematic flowchart of a data transmission method provided by an embodiment of this application.
  • FIG. 3 is a schematic diagram of a structure of a CTS frame provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of the state of each terminal device and AP after broadcasting a CTS message according to an embodiment of the application;
  • FIG. 5 is a schematic flow chart of a broadcast clear to send CTS message provided by an embodiment of this application.
  • FIG. 6 is a schematic diagram of another process of broadcasting a clear-to-send CTS message according to an embodiment of the application
  • FIG. 7 is a schematic flow chart of a broadcast clear to send CTS message provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of another process of broadcasting a clear to send CTS message according to an embodiment of the application.
  • FIG. 9 is a schematic structural diagram of a data transmission device provided by an embodiment of this application.
  • FIG. 10 is a schematic structural diagram of another data transmission device provided by an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of another data transmission device provided by an embodiment of the application.
  • the embodiments of this application are applied to communication systems, such as public land mobile network (PLMN) systems, and even fifth generation (5G) communication systems or other systems that may appear in the future.
  • PLMN public land mobile network
  • 5G fifth generation
  • the following is a part of this application Explain using terms to facilitate understanding by those skilled in the art. It should be noted that when the solution of the embodiment of the present application is applied to a 5G system or other systems that may appear in the future, the names of network devices and terminals may change, but this does not affect the implementation of the solution of the embodiment of the present application.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the application.
  • the communication system may include at least one AP and at least two terminal devices.
  • the two APs are AP1 and AP2, and the four terminal devices are terminal device 1, terminal device 2, and terminal device. 3 and terminal equipment 4.
  • AP1 and AP2 are two adjacent APs in the same network
  • terminal device 1 and terminal device 2 access the network through AP1
  • terminal device 3 and terminal device 4 access the network through AP2.
  • the data transmission of the first application will be affected, which will cause the first application to be
  • the data transmission delay in the data transmission process is relatively large.
  • an embodiment of this application provides a data transmission method.
  • the terminal device 1 can actively broadcast Clear To Send (CTS) according to the running status of the first application.
  • CTS Clear To Send
  • Message includes the resource reservation time period and the receiver address, where the receiver address is the address of the wireless access point to instruct other terminal devices according to the address of the wireless access point through the CTS message
  • the network resources are reserved for the terminal device 1 and the wireless access point 1 during the resource reservation time period; in this way, the terminal device 1 can send to the wireless access point 1 through the reserved network resources during the resource reservation time period Uplink data; and/or, within the resource reservation time period, receiving the downlink data sent by the wireless access point 1 through the reserved network resources can reduce the terminal device (or the terminal device running on it to a certain extent) The probability that the first application is affected, thereby helping to reduce the data transmission delay of the first application in the data transmission process.
  • terminal equipment also known as terminal or user equipment
  • terminal equipment is a device that provides users with voice and/or data connectivity
  • Common terminal devices include, for example: mobile phones, tablet computers, notebook computers, handheld computers, mobile internet devices (MID), and wearable devices.
  • wearable devices include smart watches, smart bracelets, and step counters.
  • the current standard usually adopts the request to send (RTS)-CTS mechanism to improve the reliability of communication.
  • the node device in the communication system broadcasts RTS packets before sending data, and other surrounding After receiving the RTS, the node device enters the silent state and replies to the CTS message, and other surrounding node devices also enter the silent state after receiving the CTS message. Only the node device that broadcasts the RTS message can send data, thus ensuring the reliability of communication .
  • RTS-CTS mechanism in real-time-oriented scenarios with high throughput and low throughput, the data volume of real-time data packets is small, and each time data is sent, RTS packets need to be broadcast, thereby making network resources The overhead is larger.
  • FIG. 2 is a schematic flowchart of a data transmission method provided by an embodiment of the application.
  • the data transmission method may be applied to a terminal device, and the terminal device runs an application program.
  • the method may include:
  • the CTS message includes the resource reservation time period and the receiver address, where the receiver address is the address of the wireless access point.
  • the running status of the first application may be whether there is a data packet of the first application to be sent in the buffer of the terminal, or it may be the first application
  • the application delay can also be the receiving interval of the data packet of the first application, etc.
  • the first application may be an application with a small amount of data but a high data transmission delay requirement.
  • the first application may be an online game application and/or a real-time voice application.
  • the application delay in the embodiment of the present application may be an application request-response delay, or may also be a value representing the network delay calculated by the application based on a series of uplink and downlink messages.
  • FIG. 3 is a schematic structural diagram of a CTS frame provided by an embodiment of this application.
  • the pre-constructed CTS frame may include frame control.
  • frame check sequence (FCS) field is mainly used to distinguish frame types and carry some frame control information, and the frame control part is the same as the CTS frame in the prior art.
  • FCS domain is mainly used for error checking.
  • the receiver address in the CTS frame is set as the address of the wireless access point AP.
  • Both terminal devices and APs that broadcast CTS messages in the resource reservation time period can access the channel, and during the uplink data transmission process, other terminal devices enter the silent state within the resource reservation time period after receiving the RTS , It will not compete with the terminal device for network resources, and only the terminal device can send uplink data to the AP through the reserved network resources, which is equivalent to reserving network resources for the terminal device within the resource reservation period.
  • the probability that the terminal device (which may also include the first application running on the terminal device) is affected can be reduced to a certain extent, thereby helping to reduce the data transmission delay of the first application in the data transmission process.
  • the AP has downlink data to send to other terminal devices, even if the other terminal devices enter the silent state during the resource reservation period, they no longer send uplink data to the AP, but because the address of the receiving end is the address of the AP, In this reserved time period, the data transmission of the AP will not be restricted, that is, it will not affect the AP to send downlink data to other terminal devices that enter the silent state, so that other terminal devices that enter the silent state can still receive the downlink data sent by the AP , Thereby reducing the impact on other terminal equipment services.
  • the terminal device broadcasts the clear to send CTS message
  • the prior art broadcasts the CTS message passively after the terminal device receives the RTS request (this request is usually sent by the AP)
  • the CTS message is broadcast.
  • the CTS message is actively broadcast according to the running situation of the first application, which can reduce the resource waste caused by sending RTS while reducing the data transmission delay.
  • terminal device 1 After terminal device 1 broadcasts a CTS message, if terminal device 2, terminal device 3, terminal device 4, and AP2 all receive the CTS message, terminal device 2, terminal device 3, terminal device 4, and AP2 enters the silent state during the resource reservation period according to the CTS message, and after entering the silent state, it no longer competes with the terminal device 1 for channels.
  • FIG. 4 is a schematic diagram of the state of each terminal device and AP after broadcasting a CTS message according to an embodiment of the application.
  • the terminal device can actively broadcast the clear to send CTS message according to the running status of the first application, so as to instruct other terminal devices to be in all locations according to the address of the wireless access point through the CTS message.
  • Reserving network resources for the terminal device and the wireless access point within the resource reservation time period; in this way, the terminal device can send uplink data to the wireless access point through the reserved network resource during the resource reservation time period; and/ Or, within the resource reservation time period, receiving downlink data sent by the wireless access point through the reserved network resources can reduce to a certain extent the terminal device (may also include the first application running on the terminal device) from being affected Therefore, it helps to reduce the data transmission delay of the first application in the data transmission process.
  • terminal device 1 after terminal device 1 broadcasts the CTS message, at least one of the other three terminal devices (for example, terminal device 2 and terminal device 3) receives the CTS message , The terminal device 2 and the terminal device 3 will enter the silent state during the resource reservation time period according to the resource reservation time period and the receiver address included in the CTS message, and no longer send uplink data to the wireless access point 1
  • the impact of the terminal device 2 and the terminal device 3 on the terminal device 1 (which may also include the first application running on the terminal device 1) can be reduced, thereby reducing the impact of the first application in the data transmission process. Data transmission delay.
  • the terminal device 2 enters the silent state during the resource reservation time period, and the terminal device 2 no longer sends uplink data to the AP1. Since the receiving end address in the CTS message broadcast by the terminal device 1 is the address of the wireless access point AP1, that is, the CTS message will not restrict the data transmission of AP1. In other words, if AP1 has downlink data sent to the terminal device 2, even if the terminal device 2 Enter the silent state during the resource reservation time period, and no longer send uplink data to AP1, but it does not affect its reception of downlink data sent by AP1.
  • terminal device 3 since the receiver address in the CTS message broadcast by terminal device 1 is the address of the wireless access point AP1, not the address of AP2 to which it belongs, the CTS message will restrict AP2’s data transmission. Therefore, the terminal Device 3 enters the silent state during the resource reservation time period, and no longer sends uplink data to AP2, nor does it receive downlink data sent by AP2.
  • the communication system includes two adjacent APs as an example for description.
  • the communication system may also have three adjacent APs or more APs.
  • the communication system can also include only one AP.
  • the AP may be an AP in a home network, and the AP covers at least one terminal device of a mobile phone, a smart TV, a smart speaker, a notebook computer, or a tablet computer, namely At least one terminal device in at least one mobile phone, smart TV, smart speaker, notebook computer, or tablet computer accesses the network through the AP.
  • the AP may be an AP in a public place, such as an AP in a hospital or a shopping mall, and the AP may cover at least one mobile phone and/or tablet computer, that is, the at least one mobile phone and/or tablet computer accesses the network through the AP.
  • the specific implementation process and the specific implementation of the communication system include two APs. The implementation process is similar, and reference may be made to the specific implementation process of the two APs, and details are not described in the embodiment of the present application.
  • the terminal device actively broadcasts CTS messages according to the running status of the first application, which not only reduces The resource waste caused by sending RTS, and the CTS message instructs other terminal devices to reserve network resources for the terminal device and the wireless access point within the resource reservation period according to the address of the wireless access point through the CTS message; in this way, the terminal The device can then send uplink data to the wireless access point through the reserved network resources during the resource reservation time period; and/or, during the resource reservation time period, the receiving wireless access point sends the data through the reserved network resources
  • the downlink data can reduce the probability that the terminal device (also including the first application running on the terminal device) is affected to a certain extent, thereby helping to reduce the data transmission delay of the first application in the data transmission process.
  • a detailed embodiment will be used to describe how the terminal device broadcasts the clear to send CTS message according to the running status of the first application.
  • the CTS message can be broadcast in at least two possible implementation manners as follows.
  • the CTS message may be broadcast when the data packet of the first application exists in the sending buffer of the terminal device.
  • the CTS message may be broadcast when the application delay of the first application is greater than the first threshold and the data packet of the first application exists in the transmission buffer of the terminal device.
  • the CTS message is broadcast when the data packet of the first application exists in the sending buffer of the terminal device.
  • FIG. 5 is a schematic flowchart of a broadcast clear to send CTS message provided by an embodiment of the application. The method may include:
  • S501 Detect whether there is a data packet of the first application in the sending buffer of the terminal device.
  • the detection module in the terminal device may be used to detect whether there is a data packet of the first application to be sent in the transmission buffer of the terminal device.
  • the detection module may be a detection module in the kernel, and The detection module is a software module.
  • the terminal device may broadcast the CTS message to other terminal devices through the WiFi module of the terminal device.
  • the WiFi module can be driven to broadcast the CTS message to other terminal devices through the interface provided by the WiFi driver, so as to realize the broadcasting of the CTS message.
  • the terminal device can broadcast a CTS message, The CTS instructs other terminal devices to reserve network resources for the terminal device and the wireless access point within the resource reservation time period according to the address of the wireless access point.
  • the terminal device can send uplink data to the wireless access point through the reserved network resources within the resource reservation time period, which can reduce the terminal device to a certain extent (and may also include the first application running on the terminal device) The probability of being affected thereby helps to reduce the data transmission delay of the first application in the data transmission process.
  • the CTS message may be broadcast when the application delay of the first application is greater than the first threshold and the data packet of the first application exists in the transmission buffer of the terminal device.
  • FIG. 6 is a schematic flow diagram of another broadcast clear-to-send CTS message provided by an embodiment of this application. The method may include:
  • the first threshold can be set according to actual needs.
  • the size of the first threshold is not further limited in the embodiment of the present application.
  • the monitor or monitoring module of the terminal device may be used to detect whether the application delay of the first application is greater than the first threshold.
  • a threshold is a software module, and the monitoring module may be a software development kit (SDK) interface module of the first application, or a system monitoring interface.
  • SDK software development kit
  • the detection module in the terminal device may be used to detect whether there is a data packet of the first application to be sent in the transmission buffer of the terminal device.
  • the detection module may be a detection module in the kernel, and The detection module is a software module.
  • the monitor detects whether the application delay of the first application is greater than the first threshold, and the detection module detects whether there is a data packet of the first application to be sent in the transmission buffer of the terminal device.
  • the same module can also be used to detect whether the application delay of the first application is greater than the first threshold, and detect whether there is a data packet of the first application to be sent in the sending buffer of the terminal device.
  • the application delay of the first application is greater than the first threshold, it means that data transmission of other terminal devices may have an impact on the operation of the first application.
  • it can be detected whether there is a data packet of the first application in the sending buffer of the terminal device, so as to determine whether to broadcast the CTS message according to the detection result.
  • the detection module detects whether there is a data packet of the first application in the transmission buffer of the terminal device, and if it is determined after the detection that the terminal device transmits There is a data packet of the first application to be sent in the buffer, that is, when the application delay of the first application is greater than the first threshold and the data packet of the first application exists in the transmission buffer of the terminal device, in order to avoid other terminal devices
  • the data transmission affects the current operation of the first application.
  • the terminal device can broadcast a CTS message to instruct other terminal devices to provide the terminal device and the wireless access point according to the address of the wireless access point through the CTS.
  • the entry point reserves network resources.
  • the terminal device can send uplink data to the wireless access point through the reserved network resources within the resource reservation time period, which can reduce the terminal device to a certain extent (and may also include the first application running on the terminal device) The probability of being affected thereby helps to reduce the data transmission delay of the first application in the data transmission process.
  • the clear to send CTS message can be broadcast in at least three possible implementation manners.
  • the first data packet of the first application may be received; and the CTS message is broadcast when the terminal device does not receive the second data packet after the first data packet within a predetermined time.
  • the CTS message may be broadcast periodically.
  • the CTS message is periodically broadcast; where the broadcast period is related to the interval at which the terminal device receives the data packet of the first application.
  • the terminal device may receive the first data packet of the first application; and in the case that the terminal device does not receive the second data packet after the first data packet within a predetermined time, broadcast the CTS message.
  • FIG. 7 is a schematic diagram of a process of broadcasting a clear to send CTS message according to an embodiment of the application. The method may include:
  • the first data packet may be received by a receiver in the physical layer of the terminal device, and the receiving module may be notified to receive the first data packet of the first application.
  • the receiving module is a software module, which can be implemented through an interface function.
  • S702 Broadcast a CTS message when the terminal device does not receive a second data packet after the first data packet within a predetermined time.
  • the predetermined time is the predicted receiving time of the second data packet.
  • the second data packet cannot be limitedly understood as the next data packet in the time period immediately after the first data packet, but can also be understood as the data packet in any time period after the first data packet.
  • the receiving time of the second data packet cannot be limitedly understood as the accurate receiving time of the second data packet, and it may also be a delay time period after the accurate receiving time. For example, if the accurate receiving time of the second data packet is predicted to be 0.1s, and the delay period is 10ms, the receiving time of the second data packet may be 0.11ms.
  • the receiving time of the second data packet may be predicted by a deep packet inspection (DPI) module in the terminal device.
  • the first data packet may directly include the receiving time of the second data packet, so that the DPI module can directly predict the receiving time of the second data packet based on the receiving time of the second data packet included in the first data packet.
  • the first data packet may also include the sending interval of the data packet, so that the DPI module can predict the receiving time of the second data packet based on the receiving time and the sending interval of the first data packet.
  • the embodiments of the present application only take these two acquisition methods as examples for description, but it does not mean that the embodiments of the present application are limited to these.
  • the terminal device After predicting the receiving time of the second data packet, if the second data packet is received at the receiving time, it means that the current data transmission of the first application is normal, and the data transmission of other devices does not affect the current first application. At this time, the terminal device may not need to broadcast the CTS message. On the contrary, if the second data packet is not received at the receiving time, it means that the data transmission delay of the current first application is relatively large, and the data transmission of other devices may affect the current first application. At this time, the terminal device The CTS message can be broadcast to instruct other terminal devices to reserve network resources for the terminal device and the wireless access point within the resource reservation time period according to the address of the wireless access point through the CTS.
  • the terminal device can receive the downlink data sent by the wireless access point through the reserved network resources within the resource reservation time period, which can reduce the terminal device (also including the first application running on the terminal device) to a certain extent. ) Is affected, thereby helping to reduce the data transmission delay of the first application in the data transmission process.
  • FIG. 8 is a schematic flow diagram of another broadcast clear-to-send CTS message provided by an embodiment of this application.
  • the method may include:
  • the second threshold value can be set according to actual needs.
  • the size of the second threshold value is not further limited in the embodiment of the present application.
  • the second threshold is the same as the first threshold, but of course, it may not be the same.
  • the monitor or monitoring module of the terminal device may be used to detect whether the application delay of the first application is greater than the second threshold.
  • the monitoring module is a software module, and the monitoring module may be an SDK interface module of the first application, or a system monitoring interface.
  • the second threshold can be set according to actual needs.
  • the broadcast period of the periodic broadcast can be set according to actual needs.
  • the embodiment of the present application does not further limit how long the broadcast period is.
  • the terminal device may not need to broadcast the CTS message.
  • the terminal device can periodically broadcast a CTS message to instruct other terminal devices to serve the terminal within the resource reservation period according to the address of the wireless access point through the CTS.
  • Equipment and wireless access points reserve network resources.
  • the terminal device can receive the downlink data sent by the wireless access point through the reserved network resources within the resource reservation time period, which can reduce the terminal device (also including the first application running on the terminal device) to a certain extent. ) Is affected, thereby helping to reduce the data transmission delay of the first application in the data transmission process.
  • the terminal device may periodically broadcast CTS messages.
  • the client of the terminal device may periodically broadcast the CTS message, or the current first application may periodically broadcast the CTS message.
  • the broadcast period is related to the interval at which the terminal device receives the data packet of the first application.
  • the receiving interval of the data packet of the first application is 60ms
  • the corresponding broadcast period may be 30ms or 35ms.
  • the broadcast period may also be 59ms or 58ms, which can be specifically set according to actual needs.
  • the broadcasting period in order to avoid resource waste caused by broadcasting the CTS message, when setting the broadcasting period, the broadcasting period may be smaller than the receiving interval and as close as possible to the receiving interval of the data packet of the first application.
  • the broadcast period may be 59ms or 58ms, so as to minimize the waste of resources caused by the broadcast of the CTS message while not affecting the broadcast of the CTS message.
  • the terminal device periodically broadcasts the CTS message to instruct other terminal devices to reserve network resources for the terminal device and the wireless access point within the resource reservation time period according to the address of the wireless access point through the CTS.
  • the terminal device can receive the downlink data sent by the wireless access point through the reserved network resources within the resource reservation time period, which can reduce the terminal device (also including the first application running on the terminal device) to a certain extent. ) Is affected, thereby helping to reduce the data transmission delay of the first application in the data transmission process.
  • the CTS message is periodically broadcast; and another possible implementation is the terminal device
  • the CTS message is not always broadcast periodically, but the CTS message is broadcast within a preset time period, and the CTS message is stopped after the preset time period ends. Then, according to the application delay of the first application after the CTS message is stopped broadcasting, it is judged whether it is necessary to continue broadcasting the CTS message.
  • the preset time period is greater than at least one broadcast period.
  • At least one can be understood as one or multiple, and can be specifically set according to actual needs.
  • the number of at least one broadcast period is not further limited in the embodiment of the present application.
  • the terminal device can continue to broadcast
  • the CTS message uses the CTS to instruct other terminal devices to reserve network resources for the terminal device and the wireless access point within the resource reservation time period according to the address of the wireless access point.
  • the terminal device can receive the downlink data sent by the wireless access point through the reserved network resources during the resource reservation period, which can reduce the probability of the first application being affected to a certain extent, thereby helping to reduce the first application.
  • the terminal device can stop broadcasting the CTS message.
  • FIG. 9 is a schematic structural diagram of a data transmission device 90 provided by an embodiment of the application. It is applied to a terminal device, and the terminal device runs a first application program.
  • the data transmission device 90 may include :
  • the broadcasting unit 901 is configured to broadcast a clear to send CTS message according to the running condition of the first application; the CTS message includes a resource reservation time period and a receiver address, where the receiver address is the address of the wireless access point.
  • the sending unit 902 is configured to send uplink data to the wireless access point through the reserved network resources during the resource reservation time period; and/or the receiving unit 903 is configured to receive the wireless access point during the resource reservation time period Downlink data sent by the ingress through reserved network resources.
  • the broadcasting unit 901 is configured to broadcast a clear to send CTS message according to the running status of the first application, including:
  • the broadcasting unit 901 is specifically configured to broadcast a CTS message when there is a data packet of the first application in the sending buffer of the terminal device.
  • the broadcasting unit 901 is configured to broadcast a clear to send CTS message according to the running status of the first application, including:
  • the broadcasting unit 901 is specifically configured to broadcast a CTS message when the application delay of the first application is greater than the first threshold and the data packet of the first application exists in the transmission buffer of the terminal device.
  • the broadcasting unit 901 is configured to broadcast a clear to send CTS message according to the operating condition of the first application, including:
  • the receiving unit 903 is further configured to receive the first data packet of the first application.
  • the broadcasting unit 901 is specifically configured to broadcast a CTS message when the terminal device does not receive the second data packet after the first data packet within the predetermined time, and the predetermined time is the predicted receiving time of the second data packet.
  • the broadcasting unit 901 is configured to broadcast a clear to send CTS message according to the operating condition of the first application, including:
  • the broadcasting unit 901 is specifically configured to periodically broadcast the CTS message when the application delay of the first application is greater than the second threshold.
  • the broadcasting unit 901 is configured to broadcast a clear to send CTS message according to the operating condition of the first application, including:
  • the broadcasting unit 901 is specifically configured to periodically broadcast CTS messages; wherein the broadcasting period is related to the interval at which the terminal device receives the data packet of the first application.
  • the CTS message is broadcast within a preset time period
  • the broadcasting unit 901 is further configured to stop broadcasting the CTS message after the preset time period ends, and the preset time period is greater than at least one broadcasting period.
  • the broadcasting unit 901 is further configured to continue broadcasting the CTS message when the application delay of the first application increases; when the application delay of the first application decreases, Stop broadcasting CTS messages.
  • the broadcasting unit and the sending unit may be one module, that is, the functions of the broadcasting unit and the sending unit are realized through the same module.
  • the same module may be a module that uses the same communication port. Module.
  • the data transmission device 90 in the embodiment shown in FIG. 9 may be the terminal device itself, or may be a component (such as a chip or a circuit) that can be configured in the terminal device.
  • the data transmission device 90 shown in the embodiment of the present application can execute the technical solution of the data transmission method in the embodiment shown in FIG. 2 to FIG. 8, its realization principle and beneficial effects and the realization principle and beneficial effect of the data transmission method It is similar and will not be repeated here.
  • FIG. 10 is a schematic structural diagram of another data transmission apparatus provided by an embodiment of the application, which is applied to a terminal device, and the terminal device runs a first application program.
  • the data transmission apparatus 100 may include The processing circuit 1001, the interface circuit 1002 and the storage medium 1003, among which,
  • the interface circuit 1002 is used to send and receive information with other devices through instructions in the storage medium 1003.
  • the processing circuit 1001 is used to run the instructions in the storage medium 1003 to control the interface circuit 1002 to execute the technical solution of the data transmission method in the embodiment shown in FIGS. 2 to 8 above, and its implementation principle and beneficial The effect is similar to the realization principle and beneficial effect of the data transmission method, and will not be repeated here.
  • FIG. 11 is a schematic structural diagram of another data transmission device 110 provided by an embodiment of the application, which is applied to a terminal device, and the terminal device runs a first application program.
  • the data transmission device 110 may Including a processor 1101 and a memory 1102, among which,
  • the memory 1102 is used to store program instructions
  • the processor 1101 is configured to read the program instructions in the memory 1102, and execute the technical solutions of the data transmission method in the embodiments shown in FIGS. 2 to 8 according to the program instructions in the memory 1102.
  • the implementation principles and beneficial effects are similar to the implementation principles and beneficial effects of the data transmission method, and will not be repeated here.
  • An embodiment of the present application further provides a computer storage medium, including instructions, when the instructions are executed by one or more processors, the data transmission device is caused to execute the data transmission method in the embodiments shown in FIGS. 2-8.
  • the implementation principle and beneficial effects of the technical solution of the data transmission method are similar to those of the data transmission method, and will not be repeated here.
  • the embodiment of the present application also provides a chip on which a computer program is stored, and the computer program is executed by a processor to perform the technical solution of the data transmission method in the embodiment shown in FIG. 2 to FIG. 8, its implementation principle and beneficial effects It is similar to the implementation principle and beneficial effects of the data transmission method, and will not be repeated here.
  • the processor in each of the above embodiments may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), and a field programmable gate array (FPGA) Or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in random access memory (RAM), flash memory, read-only memory (read-only memory, ROM), programmable read-only memory, or electrically erasable programmable memory, registers, etc. mature in the field Storage medium.
  • RAM random access memory
  • flash memory read-only memory
  • read-only memory read-only memory
  • ROM programmable read-only memory
  • electrically erasable programmable memory registers, etc. mature in the field Storage medium.
  • the storage medium is located in the memory, and the processor reads the instructions in the memory and completes the steps of the above method in combination with its hardware.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It 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, and may be in 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, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

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Abstract

本申请实施例提供一种数据传输方法和装置，终端设备可以根据第一应用的运行情况，主动广播清除发送CTS消息，以通过该CTS消息指示其它终端设备根据所述无线接入点的地址，在所述资源预留时间段内为终端设备和无线接入点预留网络资源；这样终端设备就可以在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据；和/或，在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。

Description

数据传输方法和装置
本申请要求于2019年07月08日提交中国专利局、申请号为201910611278.5、申请名称为“数据传输方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种数据传输方法和装置。
背景技术
对于部署在终端设备上的某类应用程序而言，该类应用程序对数据传输的实时性要求较高，例如，这类应用可以是实时语音类应用，或者游戏类应用。在该类应用程序在运行过程中，若其接入的同一无线网络中的其它设备也在进行大数据量传输，则会影响该类应用程序的数据传输，从而导致该类应用程序数据传输的时延较大。
为了避免其它设备进行数据传输对该类应用程序的数据传输产生影响，现有技术中，可以采用点协调(point coordination function，PCF)原理集中控制介质的访问。例如，将无线接入点(access point，AP)作为中心协调控制器，根据其内部的轮询表(polling list)依次轮询与之连接的终端设备。目标终端设备在执行数据传输过程中，以超帧为周期进行数据传输,每个超帧周期包括一个无竞争阶段和一个竞争阶段，目标终端设备在无竞争阶段进行数据传输，而其它设备不能主动执行数据传输的操作，相当于为该类应用程序预留资源，并通过预留的资源进行数据传输，从而降低了该类应用程序的数据传输时延。
然而，采用上述PCF的方式，终端中的硬件需要具备PCF能力，但目前很多终端并不具备PCF能力，因此，在实时类应用程序运行过程中，如何降低其它设备对实时类应用程序影响的概率且不依赖特殊的硬件能力(如PCF)是本领域技术人员亟待解决的问题。
发明内容
本申请提供一种数据传输方法和装置，在实时类应用程序运行过程中，降低了其它设备对实施类应用程序影响的概率且无需终端的硬件具备PCF能力，从而有助于降低实时类应用程序的时延，适用面更广，更方便。
第一方面，本申请实施例提供一种数据传输方法，应用于终端设备，终端设备运行有第一应用程序，该数据传输方法可以包括：
根据第一应用的运行情况，广播清除发送CTS消息；其中，CTS消息包括资源预留时间段和接收端地址，其中，接收端地址为无线接入点的地址。
在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据，和/或， 在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据。
示例的，终端设备在根据第一应用的运行情况，主动广播CTS消息时，第一应用的运行情况可以为终端的缓存中是否存在待发送的第一应用的数据包，也可以为第一应用的应用时延，也可以为第一应用的数据包的接收间隔等。可以理解的是，第一应用可以为数据量较小，但对数据传输时延要求较高的应用程序，例如第一应用可以为在线游戏应用程序和/或实时语音应用程序等。其中，本申请实施例中的时延，可以为请求-响应时延，或者，也可以为应用基于一系列上下行报文计算的表征网络传输质量的数值。
由此可见，在本申请实施例中，终端设备可以根据第一应用的运行情况，主动广播清除发送CTS消息，以通过该CTS消息指示其它终端设备根据所述无线接入点的地址，在所述资源预留时间段内为终端设备和无线接入点预留网络资源；这样终端设备就可以在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据；和/或，在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
在一种可能的实现方式中，若通过预留的网络资源向无线接入点发送上行数据，则根据第一应用的运行情况，广播清除发送CTS消息，可以包括：
在终端设备的发送缓存中存在第一应用的数据包的情况下，广播CTS消息。
由此可见，在本申请实施例中，通过检测发送缓存中存在第一应用的数据包，若终端设备的发送缓存中存在待发送的第一应用的数据包，为了避免其它终端设备的数据传输对当前该第一应用的运行产生影响，终端设备可以广播CTS消息，以通过该CTS指示其它终端设备根据无线接入点的地址，在资源预留时间段内为终端设备和无线接入点预留网络资源。这样终端设备就可以在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
在一种可能的实现方式中，若通过预留的网络资源向无线接入点发送上行数据，则根据第一应用的运行情况，广播清除发送CTS消息，可以包括：
在第一应用的应用时延大于第一阈值，且终端设备的发送缓存中存在第一应用的数据包的情况下，广播CTS消息。
由此可见，在本申请实施例中，通过检测第一应用的应用实践是否大于第一阈值，且通过检测检测发送缓存中存在第一应用的数据包，使得在在第一应用的应用时延大于第一阈值，且终端设备的发送缓存中存在第一应用的数据包时，为了避免其它终端设备的数据传输对当前该第一应用的运行产生影响，终端设备可以广播CTS消息，以通过该CTS指示其它终端设备根据无线接入点的地址，在资源预留时间段内为终端设备和无线接入点预留网络资源。这样终端设备就可以在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
在一种可能的实现方式中，若接收无线接入点通过预留的网络资源发送的下行数据，则根据第一应用的运行情况，广播清除发送CTS消息，可以包括：
接收第一应用的第一数据包。
在终端设备未在预定时间接收到第一数据包之后的第二数据包的情况下，广播CTS消息，预定时间为预测的第二数据包的接收时间。
由此可见，在本申请实施例中，通过预测第二数据包的接收时间，若终端设备未在预定时间接收到第一数据包之后的第二数据包，则说明当前第一应用的数据传输时延较大，其它设备的数据传输可能对该当前第一应用产生了影响，此时终端设备可以广播CTS消息，以通过该CTS指示其它终端设备根据无线接入点的地址，在资源预留时间段内为终端设备和无线接入点预留网络资源。这样终端设备就可以在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
在一种可能的实现方式中，若接收无线接入点通过预留的网络资源发送的下行数据，则根据第一应用的运行情况，广播清除发送CTS消息，可以包括：
在第一应用的应用时延大于第二阈值的情况下，周期性广播CTS消息。
由此可见，在本申请实施例中，通过检测第一应用的应用实现，若第一应用的应用时延大于第二阈值，则说明当前第一应用的数据传输时延较大，其它设备的数据传输可能对该当前第一应用的运行产生了影响，此时终端设备可以周期性广播CTS消息，以通过该CTS指示其它终端设备根据无线接入点的地址，在资源预留时间段内为终端设备和无线接入点预留网络资源。这样终端设备就可以在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
在一种可能的实现方式中，若接收无线接入点通过预留的网络资源发送的下行数据，则根据第一应用的运行情况，广播清除发送CTS消息，可以包括：
周期性广播CTS消息；其中，广播周期与终端设备接收第一应用的数据包的间隔有关。
在一种可能的实现方式中，CTS消息在预设时间段内被广播，该数据传输方法还可以包括：
预设时间段结束后停止广播CTS消息，预设时间段大于至少一个广播周期。
在一种可能的实现方式中，停止广播CTS消息后，该数据传输方法还可以包括：
在第一应用的应用时延增大的情况下，继续广播CTS消息；在第一应用的应用时延减小的情况下，终止广播CTS消息。
在本申请实施例中，预设时间段结束后停止广播CTS消息，并在停止广播CTS消息之后，通过检测第一应用的应用时延，并将第一应用的应用时延与广播CTS消息时第一应用的应用时延进行比较，若检测到停止广播CTS消息之后，第一应用的应用时延增大，即在第一应用的应用时延增大的情况下，说明其它终端设备的数据传输对该第一应用的运行产生了影响，导致该第一应用的应用时延较大，此时，为了避免其 它终端设备的数据传输继续对该第一应用的运行产生影响，终端设备可以继续广播该CTS消息，以通过该CTS指示其它终端设备根据无线接入点的地址，在资源预留时间段内为终端设备和无线接入点预留网络资源。这样终端设备就可以在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据，可以在一定程度上降低第一应用被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。相反的，若检测到停止广播CTS消息之后，第一应用的应用时延减小或者不变，即在第一应用的应用时延减小的情况下，说明该第一应用的应用时延不是其它终端设备传输数据引起的，可能是网络信号不好或者其它因素引起的，即使终端设备继续广播该CTS消息，也不会降低该第一应用的应用时延，因此，为了避免由于广播该CTS消息造成的资源浪费，终端设备可以停止广播该CTS消息。
第二方面，本申请实施例还提供一种数据传输装置，应用于终端设备，终端设备运行有第一应用程序，该数据传输装置可以包括：
广播单元，用于根据第一应用的运行情况，广播清除发送CTS消息；其中，CTS消息包括资源预留时间段和接收端地址，其中，接收端地址为无线接入点的地址。
发送单元，用于在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据；和/或，接收单元，用于在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据。
在一种可能的实现方式中，若通过预留的网络资源向无线接入点发送上行数据，则广播单元，用于根据第一应用的运行情况，广播清除发送CTS消息，可以包括：
广播单元，具体用于在终端设备的发送缓存中存在第一应用的数据包的情况下，广播CTS消息。
在一种可能的实现方式中，若通过预留的网络资源向无线接入点发送上行数据，则广播单元，用于根据第一应用的运行情况，广播清除发送CTS消息，可以包括：
广播单元，具体用于在第一应用的应用时延大于第一阈值，且终端设备的发送缓存中存在第一应用的数据包的情况下，广播CTS消息。
在一种可能的实现方式中，若接收无线接入点通过预留的网络资源发送的下行数据，则广播单元，用于根据第一应用的运行情况，广播清除发送CTS消息，可以包括：
接收单元，还用于接收第一应用的第一数据包。
广播单元，具体用于在终端设备未在预定时间接收到第一数据包之后的第二数据包的情况下，广播CTS消息，预定时间为预测的第二数据包的接收时间。
在一种可能的实现方式中，若接收无线接入点通过预留的网络资源发送的下行数据，则广播单元，用于根据第一应用的运行情况，广播清除发送CTS消息，可以包括：
广播单元，具体用于在第一应用的应用时延大于第二阈值的情况下，周期性广播CTS消息。
在一种可能的实现方式中，若接收无线接入点通过预留的网络资源发送的下行数据，则广播单元，用于根据第一应用的运行情况，广播清除发送CTS消息，可以包括：
广播单元，具体用于周期性广播CTS消息；其中，广播周期与终端设备接收第一应用的数据包的间隔有关。
在一种可能的实现方式中，CTS消息在预设时间段内被广播，广播单元，还用于 在预设时间段结束后停止广播CTS消息，预设时间段大于至少一个广播周期。
在一种可能的实现方式中，停止广播CTS消息后，广播单元，还用于在第一应用的应用时延增大的情况下，继续广播CTS消息；在第一应用的应用时延减小的情况下，终止广播CTS消息。
可以理解的是，在本申请实施例中，广播单元和发送单元可以为一个模块，即通过同一个模块实现广播单元和发送单元的功能，例如，该同一个模块可以为使用相同的通信端口的模块。
可选的，上述第二方面的数据传输装置可以是终端设备本身，也可以是可配置于终端设备的部件(例如芯片或者电路)。
第三方面，本申请实施例还提供一种数据传输装置，该数据传输装置可以包括处理电路、接口电路和存储介质，其中，
所述接口电路用于通过所述存储介质中的指令与其他设备收发信息；
所述处理电路用于运行所述存储介质中的指令控制所述接口电路，以执行上述第一方面任一种可能的实现方式中所述的数据传输方法。
第四方面，本申请实施例还提供一种数据传输装置，该数据传输装置可以包括存储器及处理器，其中，
所述存储器用于存储程序指令；
所述处理器用于读取所述存储器中的程序指令，并根据所述存储器中的程序指令执行上述第一方面任一种可能的实现方式中所述的数据传输方法。
第五方面，本申请实施例还提供一种计算机存储介质，包括指令，当所述指令由一个或多个处理器运行时，使得数据传输装置执行上述第一方面任一种可能的实现方式中所述的数据传输方法。
第六方面，本申请实施例还提供一种芯片，芯片上存储有计算机程序，在计算机程序被处理器执行时，执行上述第一方面任一种可能的实现方式中所述的数据传输方法。
本申请实施例提供的数据传输方法和装置，终端设备可以根据第一应用的运行情况，主动广播清除发送CTS消息，以通过该CTS消息指示其它终端设备根据所述无线接入点的地址，在所述资源预留时间段内为终端设备和无线接入点预留网络资源；这样终端设备就可以在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据；和/或，在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
附图说明
图1为本申请实施例提供的一种应用场景示意图；
图2为本申请实施例提供的一种数据传输方法的流程示意图；
图3为本申请实施例提供的一种CTS帧的结构示意图；
图4为本申请实施例提供的一种在广播CTS消息之后，各终端设备和AP的状态示意图；
图5为本申请实施例提供的一种广播清除发送CTS消息的流程示意图；
图6为本申请实施例提供的另一种广播清除发送CTS消息的流程示意图；
图7为本申请实施例提供的一种广播清除发送CTS消息的流程示意图；
图8为本申请实施例提供的另一种广播清除发送CTS消息的流程示意图；
图9为本申请实施例提供的一种数据传输装置的结构示意图；
图10为本申请实施例提供的另一种数据传输装置的结构示意图；
图11为本申请实施例提供的又一种数据传输装置的结构示意图。
具体实施方式
本申请实施例应用于通信系统，例如公共陆地移动网络(public land mobile network，PLMN)系统，甚至第五代(5th generation，5G)通信系统或未来可能出现的其他系统，以下对本申请中的部分用语进行解释说明，以便于本领域技术人员理解。需要说明的是，当本申请实施例的方案应用于5G系统或未来可能出现的其他系统时，网络设备和终端的名称可能发生变化，但这并不影响本申请实施例方案的实施。
图1为本申请实施例提供的一种应用场景示意图，该通信系统可以包括至少一个AP和至少两个终端设备。示例的，可参见图1所示，以通信系统包括两个AP和四个终端设备为例，两个AP分别为AP1和AP2，四个终端设备分别为终端设备1、终端设备2、终端设备3及终端设备4。其中，AP1和AP2为同一个网络中的两个相邻的AP，终端设备1和终端设备2通过AP1接入网络，终端设备3和终端设备4通过AP2接入网络。以终端设备1的前台正在运行第一应用为例，若此时其它三个终端设备也在进行大数据量传输，则会对该第一应用的数据传输产生影响，从而导致该第一应用在数据传输过程中的数据传输时延较大。
为了避免其它三个终端设备对当前第一应用产生影响，本申请实施例提供了一种数据传输方法，终端设备1可以根据第一应用的运行情况，主动广播清除发送(Clear To Send，CTS)消息；其中，CTS消息包括资源预留时间段和接收端地址，其中，接收端地址为无线接入点的地址，以通过该CTS消息指示其它终端设备根据所述无线接入点的地址，在所述资源预留时间段内为终端设备1和无线接入点1预留网络资源；这样终端设备1就可以在资源预留时间段内，通过预留的网络资源向无线接入点1发送上行数据；和/或，在资源预留时间段内，接收无线接入点1通过预留的网络资源发送的下行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
其中，1)终端设备，又称为终端、用户设备，是一种向用户提供语音和/或数据连通性的设备，例如，具有无线连功能的手持式设备、车载设备等。常见的终端设备例如包括：手机、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，其中，可穿戴设备例如包括：智能手表、智能手环、计步器等。
2)在本申请的实施例中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A， B可以是单数或者复数。在本申请的文字描述中，字符“/”一般表示前后关联对象是一种“或”的关系。
在现有的通信系统中，当前标准通常采用请求发送(request to send，RTS)-CTS机制提升通信的可靠性，通信系统中的节点设备在发送数据之前，先广播RTS报文，周围其它的节点设备接收到RTS后进入静默状态，并回复CTS报文，周围其它节点设备接收到CTS报文后也进入静默状态，只有广播RTS报文的节点设备才能发送数据，从而保证了通信的可靠性。但是采用现有的RTS-CTS机制，在面向实时要求高吞吐小的场景中，由于实时类数据报文的数据量较小，且每发一次数据，均需要广播RTS报文，从而使得网络资源的开销较大。
示例的，请参见图2，图2为本申请实施例提供的一种数据传输方法的流程示意图，该数据传输方法可以应用于终端设备，该终端设备运行有一个应用程序，该方法可以包括：
S201、根据第一应用的运行情况，广播清除发送CTS消息。
其中，CTS消息包括资源预留时间段和接收端地址，其中，接收端地址为无线接入点的地址。
示例的，终端设备在根据第一应用的运行情况，主动广播CTS消息时，第一应用的运行情况可以为终端的缓存中是否存在待发送的第一应用的数据包，也可以为第一应用的应用时延，也可以为第一应用的数据包的接收间隔等。可以理解的是，第一应用可以为数据量较小，但对数据传输时延要求较高的应用程序，例如第一应用可以为在线游戏应用程序和/或实时语音应用程序等。其中，本申请实施例中的应用时延，可以为应用请求-响应时延，或者，也可以为应用基于一系列上下行报文计算的表征网络延迟的数值。
终端设备在主动广播CTS消息之前，可以先构造CTS帧。示例的，请参见图3所示，图3为本申请实施例提供的一种CTS帧的结构示意图，结合图3所示，可以看出，预先构造的CTS帧可以包括帧控制(frame control)和帧校验序列(frame check sequence，FCS)域。其中，帧控制主要用于区分帧类型，及携带一些帧控制信息，该帧控制部分与现有技术中的CTS帧相同。FCS域主要用于错误校验，与现有技术不同的是，在本申请实施例中，通过将CTS帧中的接收端地址设置为无线接入点AP的地址，其原因在于：一方面，在资源预留时间段内广播CTS报文的终端设备和AP都可接入信道，且在进行上行数据传输过程中，其它终端设备接收到RTS后在所述资源预留时间段内进入静默状态，不会与该终端设备竞争网络资源，只有该终端设备可以通过预留的网络资源向AP发送上行数据，相当于在所述资源预留时间段内为该终端设备预留了网络资源，这样可以在一定程度上降低该终端设备(也可包括该终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。另一方面，当AP有下行数据发送给其它终端设备时，即使其它终端设备在所述资源预留时间段进入静默状态，不再向AP发送上行数据，但是由于接收端的地址为AP的地址，使得在该预留时间段内，不会限制AP的数据传输，即并不影响AP向进入静默状态的其它终端设备发送下行数据，这样进入静默状态的其它终端设备仍然可以接收AP发送的下行数据，从而降低了对其它终端设备的业务的影响。
需要说明的是，终端设备在广播清除发送CTS消息时，与现有技术中不同的是，现有技术广播CTS消息是在终端设备接收到RTS请求(该请求通常是AP发送)之后，被动地广播CTS消息，而在本申请实施例中，是根据第一应用的运行情况，主动广播CTS消息，这样可以在降低数据传输时延的情况下，减少由于发送RTS造成的资源浪费。
S202、在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据；和/或，在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据。
结合图1所描述的，终端设备1在广播CTS消息之后，若终端设备2、终端设备3、终端设备4及AP2均接收到该CTS消息，则终端设备2、终端设备3、终端设备4及AP2均根据该CTS消息在资源预留时间段进入静默状态，在进入静默状态之后，不再与该终端设备1竞争信道。示例的，请参见图4所示，图4为本申请实施例提供的一种在广播CTS消息之后，各终端设备和AP的状态示意图。结合图4可以看出，终端设备1和AP1的数据传输不受限制，继续进行数据传输，而终端设备2、终端设备3、终端设备4及AP2均根据该CTS消息在资源预留时间段进入静默状态，不再与该终端设备1竞争信道，避免了对该终端设备1(也可包括该终端设备1上运行的第一应用)产生影响，从而有助于降低第一应用在数据传输过程中的数据传输时延。
由此可见，在本申请实施例中，终端设备可以根据第一应用的运行情况，主动广播清除发送CTS消息，以通过该CTS消息指示其它终端设备根据所述无线接入点的地址，在所述资源预留时间段内为终端设备和无线接入点预留网络资源；这样终端设备就可以在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据；和/或，在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
基于上述图2所示的实施例，需要说明的是，在通过本申请实施例提供的数据传输方法广播CTS消息之后，在描述有益效果时，之所以描述为在一定程度上有助于降低第一应用被影响的概率，是因为终端广播CTS消息之后存在两种可能的场景。在一种可能的场景中，终端设备1在广播CTS消息之后，其它三个终端设备均未接收到该CTS消息，进而均不会根据该CTS消息中包括的资源预留时间段和接收端地址，在所述资源预留时间段进入静默状态，而是继续进行数据传输，在该种场景下，无法降低其它三个终端设备对该第一应用的影响。显然，这种场景是比较极端也比较少见的。在另一种更常见，可能性更大的场景下，终端设备1在广播CTS消息之后，其它三个终端设备中存在至少一个终端设备(例如终端设备2和终端设备3)接收到该CTS消息，则终端设备2和终端设备3会根据该CTS消息中包括的资源预留时间段和接收端地址，在所述资源预留时间段进入静默状态，不再向无线接入点1发送上行数据，在该种场景下，可以降低终端设备2和终端设备3对该终端设备1(也可包括终端设备1上运行的第一应用)的影响，从而降低了第一应用在数据传输过程中的数据传输时延。
可以理解的是，在上述传输过程中，对于终端设备2而言，在所述资源预留时间段进入静默状态，终端设备2不再向AP1发送上行数据。由于终端设备1广播的CTS消息中的接收端地址为无线接入点AP1的地址，即该CTS消息不会限制AP1的数据 传输，换言之，若AP1有下行数据发送给终端设备2，即使终端设备2在所述资源预留时间段进入静默状态，不再向AP1发送上行数据，但并不影响其接收AP1发送的下行数据。但对于终端设备3，由于终端设备1广播的CTS消息中的接收端地址为无线接入点AP1的地址，而不是其所属的AP2的地址，该CTS消息会限制AP2的数据传输，因此，终端设备3在所述资源预留时间段进入静默状态，不再向AP2发送上行数据，也不会接收AP2发送的下行数据。
可以理解的是，在上述图2所示的实施例中，只是以通信系统包括相邻的两个AP为例进行说明，该通信系统也可以相邻的三个AP或者更多的AP，当然，该通信系统也可以只包括一个AP。当通信系统只包括一个AP时，示例的，该AP可以为一个家庭网络中的AP，该AP覆盖至少一个手机、智能电视、智能音箱、笔记本电脑、或者平板电脑中的至少一个终端设备，即至少一个手机、智能电视、智能音箱、笔记本电脑、或者平板电脑中的至少一个终端设备通过该AP接入网络。或者，该AP可以为公共场所中的AP，例如医院或者商场中的AP，该AP可以覆盖至少一个手机和/或平板电脑，即该至少一个手机和/或平板电脑通过该AP接入网络。需要说明的是，在本申请实施例中，当该通信系统也可以相邻的三个AP或者更多的AP，或者只包括一个AP时，其具体实现过程与通信系统包括两个AP的具体实现过程类似，可参见两个AP的具体实现过程，在此，本申请实施例不再进行赘述。
基于上述图2所示的实施例，可以看出，与现有技术中不同的是，在本申请实施例中，终端设备是根据第一应用的运行情况，主动广播CTS消息，不但减少了由于发送RTS造成的资源浪费，而且通过该CTS消息指示其它终端设备根据所述无线接入点的地址，在所述资源预留时间段内为终端设备和无线接入点预留网络资源；这样终端设备就可以在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据；和/或，在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
下面，将通过详细的实施例描述终端设备如何根据第一应用的运行情况，广播清除发送CTS消息。在描述时，可以分别描述终端设备在通过预留的网络资源向无线接入点发送上行数据时，即在上行数据传输过程中，如何根据第一应用的运行情况，广播清除发送CTS消息，及终端设备在接收无线接入点通过预留的网络资源发送的下行数据时，即在下行数据传输过程中，如何根据第一应用的运行情况，广播清除发送CTS消息。
在上行数据传输过程中，在根据第一应用程序的运行情况，广播清除发送CTS消息时，可以通过下述至少两种可能的实现方式广播CTS消息。在一种可能的实现方式中，可以在终端设备的发送缓存中存在第一应用的数据包的情况下，广播CTS消息。在另一种可能的实现方式中，可以在第一应用的应用时延大于第一阈值，且终端设备的发送缓存中存在第一应用的数据包的情况下，广播CTS消息。下面，将分别对这两种可能的实现方式进行详细地描述。
在一种可能的实现方式中，在终端设备的发送缓存中存在第一应用的数据包的情况下，广播CTS消息。示例的，请参见图5所示，图5为本申请实施例提供的一种广 播清除发送CTS消息的流程示意图，该方法可以包括：
S501、检测终端设备的发送缓存中是否存在第一应用的数据包。
在一种可能的方式中，可以通过终端设备中的检测模块检测终端设备的发送缓存中是否存在待发送的第一应用的数据包，示例的，该检测模块可以为内核中的检测模块，且该检测模块是一个软件模块。
S502、若存在待发送的第一应用的数据包，则广播CTS消息。
在一种可能的方式中，终端设备在广播CTS消息时，可以通过终端设备的WiFi模块向其它终端设备广播CTS消息。示例的，在广播CTS消息时，可以通过WiFi驱动提供的接口驱动WiFi模块向其它终端设备广播CTS消息，从而实现CTS消息的广播。
检测模块在检测之后，若终端设备的发送缓存中存在待发送的第一应用的数据包，为了避免其它终端设备的数据传输对当前该第一应用的运行产生影响，终端设备可以广播CTS消息，以通过该CTS指示其它终端设备根据无线接入点的地址，在资源预留时间段内为终端设备和无线接入点预留网络资源。这样终端设备就可以在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
在另一种可能的实现方式中，可以在第一应用的应用时延大于第一阈值，且终端设备的发送缓存中存在第一应用的数据包的情况下，广播CTS消息。示例的，请参见图6所示，图6为本申请实施例提供的另一种广播清除发送CTS消息的流程示意图，该方法可以包括：
S601、检测第一应用的应用时延是否大于第一阈值。
其中，第一阈值可以根据实际需要进行设置，在此，对于第一阈值的大小，本申请实施例不做进一步地限制。
在一种可能的方式中，在检测该第一应用的应用时延是否大于第一阈值时，可以通过终端设备的监测器(Monitor)或者监测模块检测该第一应用的应用时延是否大于第一阈值。其中，监测模块是一个软件模块，该监测模块可以为第一应用的软件开发工具包(software development kit，SDK)接口模块，或者，系统监测接口。
S602、若第一应用的应用时延是否大于第一阈值，则检测终端设备的发送缓存中是否存在第一应用的数据包。
在一种可能的方式中，可以通过终端设备中的检测模块检测终端设备的发送缓存中是否存在待发送的第一应用的数据包，示例的，该检测模块可以为内核中的检测模块，且检测模块是一个软件模块。
需要说明的是，在本申请实施例中，只是以监测器检测第一应用的应用时延是否大于第一阈值，检测模块检测终端设备的发送缓存中是否存在待发送的第一应用的数据包为例进行说明，当然，也可以通过同一个模块检测第一应用的应用时延是否大于第一阈值，并且检测终端设备的发送缓存中是否存在待发送的第一应用的数据包。
若第一应用的应用时延大于第一阈值，则说明可能有其它终端设备的数据传输对该第一应用的运行产生了影响，为了避免其它终端设备的数据传输对当前该第一应用 的运行产生影响，可以检测终端设备的发送缓存中是否存在第一应用的数据包，以根据检测结果确定是否广播CTS消息。
S603、若存在待发送的第一应用的数据包，则广播CTS消息。
终端设备的监测器或者监测模块检测到第一应用的应用时延大于第一阈值时，通过检测模块检测终端设备的发送缓存中是否存在第一应用的数据包，若检测之后确定终端设备的发送缓存中存在待发送的第一应用的数据包，即在第一应用的应用时延大于第一阈值，且终端设备的发送缓存中存在第一应用的数据包的情况下，为了避免其它终端设备的数据传输对当前该第一应用的运行产生影响，终端设备可以广播CTS消息，以通过该CTS指示其它终端设备根据无线接入点的地址，在资源预留时间段内为终端设备和无线接入点预留网络资源。这样终端设备就可以在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
可以理解的是，在该种可能的实现方式，在广播CTS消息时，只是以先检测第一应用的应用时延是否大于第一阈值，当第一应用的应用时延是否大于第一阈值时，再检测终端设备的发送缓存中是否存在第一应用的数据包；当然，也可以先检测终端设备的发送缓存中是否存在第一应用的数据包，当存在第一应用的数据包时，再检测第一应用的应用时延是否大于第一阈值，具体可以根据实际需要进行设置，在此，本申请实施例不做进一步地限制。
在通过上述图5和图6所示的实施例详细描述了在上行数据传输过程，如何根据第一应用的运行情况，广播清除发送CTS消息之后，下面，将详细描述在下行数据传输过程中，如何根据第一应用的运行情况，广播清除发送CTS消息。在广播清除发送CTS消息时，可以通过至少三种可能的实现方式广播清除发送CTS消息。在一种可能的实现方式中，可以接收第一应用的第一数据包；并在终端设备未在预定时间接收到第一数据包之后的第二数据包的情况下，广播CTS消息。在另一种可能的实现方式中，可以在第一应用的应用时延大于第二阈值的情况下，周期性广播CTS消息。在又一种可能的实现方式中，周期性广播CTS消息；其中，广播周期与终端设备接收第一应用的数据包的间隔有关。下面，将分别对这三种可能的实现方式进行详细地描述。
在一种可能的实现方式中，终端设备可以接收第一应用的第一数据包；并在终端设备未在预定时间接收到第一数据包之后的第二数据包的情况下，广播CTS消息。示例的，请参见图7所示，图7为本申请实施例提供的一种广播清除发送CTS消息的流程示意图，该方法可以包括：
S701、接收第一应用的第一数据包。
在一种可能的方式中，可以通过终端设备物理层中的接收器接收该第一数据包，并通知接收模块接收第一应用的第一数据包。其中，接收模块是一个软件模块，可以通过接口函数实现。
S702、在终端设备未在预定时间接收到第一数据包之后的第二数据包的情况下，广播CTS消息。
其中，预定时间为预测的第二数据包的接收时间。示例的，第二数据包不能局限 地理解为第一数据包之后紧跟的时间段内的下一个数据包，还可以理解为第一数据包之后的任意时间段内的数据包。可以理解的是，在本申请实施例中，第二数据包的接收时间不能局限地理解为第二数据包的准确接收时间，也可以是准确接收时间之后一个延迟时间段。例如，预测第二数据包的准确接收时间为0.1s，延迟时间段为10ms，则该第二数据包的接收时间可以为0.11ms。
在一种可能的方式中，在预测第二数据包的接收时间时，可以通过终端设备中的深度报文检测(deep packet inspection，DPI)模块预测第二数据包的接收时间。示例的，第一数据包中可以直接包括第二数据包的接收时间，这样DPI模块可以直接根据第一数据包中包括的第二数据包的接收时间预测第二数据包的接收时间。当然，该第一数据包中也可以包括数据包的下发间隔，这样DPI模块可以根据该第一数据包的接收时间和下发间隔，预测第二数据包的接收时间。当然，本申请实施例只是以这两种获取方式为例进行说明，但并不代表本申请实施例仅局限于此。
在预测得到第二数据包的接收时间之后，若在接收时间接收到该第二数据包，则说明当前第一应用的数据传输正常，其它设备的数据传输没有对该当前第一应用产生影响，此时终端设备可以无需广播CTS消息。相反的，若在接收时间未接收到该第二数据包，则说明当前第一应用的数据传输时延较大，其它设备的数据传输可能对该当前第一应用产生了影响，此时终端设备可以广播CTS消息，以通过该CTS指示其它终端设备根据无线接入点的地址，在资源预留时间段内为终端设备和无线接入点预留网络资源。这样终端设备就可以在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
在另一种可能的实现方式中，在第一应用的应用时延大于第二阈值的情况下，周期性广播CTS消息。示例的，请参见图8所示，图8为本申请实施例提供的另一种广播清除发送CTS消息的流程示意图，该方法可以包括：
S801、检测第一应用的应用时延是否大于第二阈值。
其中，第二阈值可以根据实际需要进行设置，在此，对于第二阈值的大小，本申请实施例不做进一步地限制。通常情况下，第二阈值和第一阈值相同，当然，也可以不相等。
在一种可能的方式中，在检测第一应用的应用时延是否大于第二阈值时，可以通过终端设备的Monitor或者监测模块检测第一应用的应用时延是否大于第二阈值。其中，监测模块是一个软件模块，该监测模块可以为第一应用的SDK接口模块，或者，系统监测接口。第二阈值可以根据实际需要进行设置。
S802、在第一应用的应用时延大于第二阈值的情况下，则周期性广播CTS消息。
其中，周期性广播的广播周期可以根据实际需要进行设置，在此，对于广播周期具体为多久，本申请实施例不做进一步地限制。
若第一应用的应用时延小于第二阈值，则说明当前第一应用的数据传输正常，其它设备的数据传输没有对该当前第一应用产生影响，此时终端设备可以无需广播CTS消息。相反的，若第一应用的应用时延大于第二阈值，即在第一应用的应用时延大于 第二阈值的情况下，说明当前第一应用的数据传输时延较大，其它设备的数据传输可能对该当前第一应用的运行产生了影响，此时终端设备可以周期性广播CTS消息，以通过该CTS指示其它终端设备根据无线接入点的地址，在资源预留时间段内为终端设备和无线接入点预留网络资源。这样终端设备就可以在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
在又一种可能的实现方式中，终端设备可以周期性广播CTS消息。示例的，终端设备的客户端可以周期性广播CTS消息，或者当前第一应用可以周期性广播CTS消息。
其中，广播周期与终端设备接收第一应用的数据包的间隔有关。例如，第一应用的数据包的接收间隔为60ms，则对应的广播周期可以为30ms，也可以为35ms，当然，广播周期也可以为59ms，或者58ms，具体可以根据实际需要进行设置。在本申请实施例中，为了避免由于广播CTS消息造成的资源浪费，在设置广播周期时，广播周期可以小于接收间隔，且尽可能的接近第一应用的数据包的接收间隔。例如，广播周期可以为59ms，或者58ms，使得在不影响广播CTS消息的同时，尽可能地减少由于广播CTS消息造成的资源浪费。
终端设备通过周期性广播CTS消息，以通过该CTS指示其它终端设备根据无线接入点的地址，在资源预留时间段内为终端设备和无线接入点预留网络资源。这样终端设备就可以在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据，可以在一定程度上降低该终端设备(也可包括终端设备上运行的第一应用)被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。
需要说明的是，在上述另一种可能的实现方式，即在第一应用的应用时延大于第二阈值的情况下，周期性广播CTS消息；及又一种可能的实现方式，即终端设备周期性广播CTS消息中，在周期性广播CTS时，不是一直周期性广播该CTS消息，而是在在预设时间段内广播CTS消息，并在预设时间段结束后停止广播该CTS消息，再根据停止广播CTS消息后，第一应用的应用时延情况，判断是否需要继续广播该CTS消息。
示例的，预设时间段大于至少一个广播周期。至少一个可以理解为一个，也可以理解为多个，具体可以根据实际需要进行设置，在此，对于至少一个广播周期的数量，本申请实施例不做进一步地限制。
在预设时间段结束后停止广播该CTS消息，并在停止广播CTS消息之后，通过终端设备的Monitor检测第一应用的应用时延，并将第一应用的应用时延与广播CTS消息时第一应用的应用时延进行比较，若检测到停止广播CTS消息之后，第一应用的应用时延增大，即在第一应用的应用时延增大的情况下，说明其它终端设备的数据传输对该第一应用的运行产生了影响，导致该第一应用的应用时延较大，此时，为了避免其它终端设备的数据传输继续对该第一应用的运行产生影响，终端设备可以继续广播该CTS消息，以通过该CTS指示其它终端设备根据无线接入点的地址，在资源预留时间段内为终端设备和无线接入点预留网络资源。这样终端设备就可以在资源预留 时间段内，接收无线接入点通过预留的网络资源发送的下行数据，可以在一定程度上降低第一应用被影响的概率，从而有助于降低第一应用在数据传输过程中的数据传输时延。相反的，若检测到停止广播CTS消息之后，第一应用的应用时延减小或者不变，即在第一应用的应用时延减小的情况下，说明该第一应用的应用时延不是其它终端设备传输数据引起的，可能是网络信号不好或者其它因素引起的，即使终端设备继续广播该CTS消息，也不会降低该第一应用的应用时延，因此，为了避免由于广播该CTS消息造成的资源浪费，终端设备可以停止广播该CTS消息。
图9为本申请实施例提供的一种数据传输装置90的结构示意图，应用于终端设备，终端设备运行有第一应用程序，示例的，请参见图9所示，该数据传输装置90可以包括：
广播单元901，用于根据第一应用的运行情况，广播清除发送CTS消息；其中，CTS消息包括资源预留时间段和接收端地址，其中，接收端地址为无线接入点的地址。
发送单元902，用于在资源预留时间段内，通过预留的网络资源向无线接入点发送上行数据；和/或，接收单元903，用于在资源预留时间段内，接收无线接入点通过预留的网络资源发送的下行数据。
可选的，若通过预留的网络资源向无线接入点发送上行数据，则广播单元901，用于根据第一应用的运行情况，广播清除发送CTS消息，包括：
广播单元901，具体用于在终端设备的发送缓存中存在第一应用的数据包的情况下，广播CTS消息。
可选的，若通过预留的网络资源向无线接入点发送上行数据，则广播单元901，用于根据第一应用的运行情况，广播清除发送CTS消息，包括：
广播单元901，具体用于在第一应用的应用时延大于第一阈值，且终端设备的发送缓存中存在第一应用的数据包的情况下，广播CTS消息。
可选的，若接收无线接入点通过预留的网络资源发送的下行数据，则广播单元901，用于根据第一应用的运行情况，广播清除发送CTS消息，包括：
接收单元903，还用于接收第一应用的第一数据包。
广播单元901，具体用于在终端设备未在预定时间接收到第一数据包之后的第二数据包的情况下，广播CTS消息，预定时间为预测的第二数据包的接收时间。
可选的，若接收无线接入点通过预留的网络资源发送的下行数据，则广播单元901，用于根据第一应用的运行情况，广播清除发送CTS消息，包括：
广播单元901，具体用于在第一应用的应用时延大于第二阈值的情况下，周期性广播CTS消息。
可选的，若接收无线接入点通过预留的网络资源发送的下行数据，则广播单元901，用于根据第一应用的运行情况，广播清除发送CTS消息，包括：
广播单元901，具体用于周期性广播CTS消息；其中，广播周期与终端设备接收第一应用的数据包的间隔有关。
可选的，CTS消息在预设时间段内被广播，广播单元901，还用于在预设时间段结束后停止广播CTS消息，预设时间段大于至少一个广播周期。
可选的，停止广播CTS消息后，广播单元901，还用于在第一应用的应用时延增 大的情况下，继续广播CTS消息；在第一应用的应用时延减小的情况下，终止广播CTS消息。
可以理解的是，在本申请实施例中，广播单元和发送单元可以为一个模块，即通过同一个模块实现广播单元和发送单元的功能，例如，该同一个模块可以为使用相同的通信端口的模块。
可选的，图9所示的实施例中的数据传输装置90可以是终端设备本身，也可以是可配置于终端设备的部件(例如芯片或者电路)。
本申请实施例所示的数据传输装置90，可以执行上述图2-图8所示的实施例中的数据传输方法的技术方案，其实现原理以及有益效果与数据传输方法的实现原理及有益效果类似，此处不再进行赘述。
图10为本申请实施例提供的另一种数据传输装置的结构示意图，应用于终端设备，终端设备运行有第一应用程序，示例的，请参见图10所示，该数据传输装置100可以包括处理电路1001、接口电路1002和存储介质1003，其中，
所述接口电路1002用于通过所述存储介质1003中的指令与其他设备收发信息。
所述处理电路1001用于运行所述存储介质1003中的指令控制所述接口电路1002，以执行上述图2-图8所示的实施例中的数据传输方法的技术方案，其实现原理以及有益效果与数据传输方法的实现原理及有益效果类似，此处不再进行赘述。
图11为本申请实施例提供的又一种数据传输装置110的结构示意图，应用于终端设备，终端设备运行有第一应用程序，示例的，请参见图110所示，该数据传输装置110可以包括处理器1101及存储器1102，其中，
所述存储器1102用于存储程序指令；
所述处理器1101用于读取所述存储器1102中的程序指令，并根据所述存储器1102中的程序指令执行上述图2-图8所示的实施例中的数据传输方法的技术方案，其实现原理以及有益效果与数据传输方法的实现原理及有益效果类似，此处不再进行赘述。
本申请实施例还提供一种计算机存储介质，包括指令，当所述指令由一个或多个处理器运行时，使得数据传输装置执行上述图2-图8所示的实施例中的数据传输方法的技术方案，其实现原理以及有益效果与数据传输方法的实现原理及有益效果类似，此处不再进行赘述。
本申请实施例还提供一种芯片，芯片上存储有计算机程序，在计算机程序被处理器执行上述图2-图8所示的实施例中的数据传输方法的技术方案，其实现原理以及有益效果与数据传输方法的实现原理及有益效果类似，此处不再进行赘述。
上述各个实施例中处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可 以位于随机存取存储器(random access memory，RAM)、闪存、只读存储器(read-only memory，ROM)、可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的指令，结合其硬件完成上述方法的步骤。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，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，也可以采用硬件加软件功能单元的形式实现。

Claims (18)

  1. 一种数据传输方法，其特征在于，应用于终端设备，所述终端设备运行有第一应用程序，所述方法包括：
    根据所述第一应用的运行情况，广播清除发送CTS消息；其中，所述CTS消息包括资源预留时间段和接收端地址，其中，所述接收端地址为无线接入点的地址；
    在所述资源预留时间段内，通过所述预留的网络资源向所述无线接入点发送上行数据，和/或，在所述资源预留时间段内，接收所述无线接入点通过所述预留的网络资源发送的下行数据。
  2. 根据权利要求1所述的方法，其特征在于，若通过所述预留的网络资源向所述无线接入点发送上行数据，则所述根据所述第一应用的运行情况，广播清除发送CTS消息，包括：
    在所述终端设备的发送缓存中存在所述第一应用的数据包的情况下，广播所述CTS消息。
  3. 根据权利要求1所述的方法，其特征在于，若通过所述预留的网络资源向所述无线接入点发送上行数据，则所述根据所述第一应用的运行情况，广播清除发送CTS消息，包括：
    在所述第一应用的应用时延大于第一阈值，且所述终端设备的发送缓存中存在所述第一应用的数据包的情况下，广播所述CTS消息。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，若接收所述无线接入点通过所述预留的网络资源发送的下行数据，则所述根据所述第一应用的运行情况，广播清除发送CTS消息，包括：
    接收所述第一应用的第一数据包；
    在所述终端设备未在预定时间接收到所述第一数据包之后的第二数据包的情况下，广播所述CTS消息，所述预定时间为预测的所述第二数据包的接收时间。
  5. 根据权利要求1-3任一项所述的方法，其特征在于，若接收所述无线接入点通过所述预留的网络资源发送的下行数据，则所述根据所述第一应用的运行情况，广播清除发送CTS消息，包括：
    在所述第一应用的应用时延大于第二阈值的情况下，周期性广播所述CTS消息。
  6. 根据权利要求1-3任一项所述的方法，其特征在于，若接收所述无线接入点通过所述预留的网络资源发送的下行数据，则所述根据所述第一应用的运行情况，广播清除发送CTS消息，包括：
    周期性广播所述CTS消息；其中，广播周期与所述终端设备接收所述第一应用的数据包的间隔有关。
  7. 根据权利要求5或6所述的方法，其特征在于，所述CTS消息在预设时间段内被广播，所述方法还包括：
    所述预设时间段结束后停止广播所述CTS消息，所述预设时间段大于至少一个广播周期。
  8. 根据权利要求7所述的方法，其特征在于，所述停止广播所述CTS消息后， 所述方法还包括：
    在所述第一应用的应用时延增大的情况下，继续广播所述CTS消息；
    在所述第一应用的应用时延减小的情况下，终止广播所述CTS消息。
  9. 一种数据传输装置，其特征在于，应用于终端设备，所述终端设备运行有第一应用程序，所述装置包括：
    广播单元，用于根据所述第一应用的运行情况，广播清除发送CTS消息；其中，所述CTS消息包括资源预留时间段和接收端地址，其中，所述接收端地址为无线接入点的地址；
    发送单元，用于在所述资源预留时间段内，通过所述预留的网络资源向所述无线接入点发送上行数据；和/或，接收单元，用于在所述资源预留时间段内，接收所述无线接入点通过所述预留的网络资源发送的下行数据。
  10. 根据权利要求9所述的装置，其特征在于，若通过所述预留的网络资源向所述无线接入点发送上行数据，则所述广播单元，用于根据所述第一应用的运行情况，广播清除发送CTS消息，包括：
    所述广播单元，具体用于在所述终端设备的发送缓存中存在所述第一应用的数据包的情况下，广播所述CTS消息。
  11. 根据权利要求9所述的装置，其特征在于，若通过所述预留的网络资源向所述无线接入点发送上行数据，则所述广播单元，用于根据所述第一应用的运行情况，广播清除发送CTS消息，包括：
    所述广播单元，具体用于在所述第一应用的应用时延大于第一阈值，且所述终端设备的发送缓存中存在所述第一应用的数据包的情况下，广播所述CTS消息。
  12. 根据权利要求9-11任一项所述的装置，其特征在于，若接收所述无线接入点通过所述预留的网络资源发送的下行数据，则所述广播单元，用于根据所述第一应用的运行情况，广播清除发送CTS消息，包括：
    所述接收单元，还用于接收所述第一应用的第一数据包；
    所述广播单元，具体用于在所述终端设备未在预定时间接收到所述第一数据包之后的第二数据包的情况下，广播所述CTS消息，所述预定时间为预测的所述第二数据包的接收时间。
  13. 根据权利要求9-11任一项所述的装置，其特征在于，若接收所述无线接入点通过所述预留的网络资源发送的下行数据，则所述广播单元，用于根据所述第一应用的运行情况，广播清除发送CTS消息，包括：
    所述广播单元，具体用于在所述第一应用的应用时延大于第二阈值的情况下，周期性广播所述CTS消息。
  14. 根据权利要求9-11任一项所述的装置，其特征在于，若接收所述无线接入点通过所述预留的网络资源发送的下行数据，则所述广播单元，用于根据所述第一应用的运行情况，广播清除发送CTS消息，包括：
    所述广播单元，具体用于周期性广播所述CTS消息；其中，广播周期与所述终端设备接收所述第一应用的数据包的间隔有关。
  15. 根据权利要求13或14所述的装置，其特征在于，所述CTS消息在预设时间 段内被广播，所述广播单元，还用于在所述预设时间段结束后停止广播所述CTS消息，所述预设时间段大于至少一个广播周期。
  16. 根据权利要求15所述的装置，其特征在于，所述停止广播所述CTS消息后，所述广播单元，还用于在所述第一应用的应用时延增大的情况下，继续广播所述CTS消息；在所述第一应用的应用时延减小的情况下，终止广播所述CTS消息。
  17. 一种数据传输装置，其特征在于，包括处理电路、接口电路和存储介质，其中，
    所述接口电路用于通过所述存储介质中的指令与其他设备收发信息；
    所述处理电路用于运行所述存储介质中的指令控制所述接口电路，以执行上述权利要求1-8中任一项所述的数据传输方法。
  18. 一种计算机存储介质，包括指令，其特征在于，
    当所述指令由一个或多个处理器运行时，使得数据传输装置执行上述权利要求1-8中任一项所述的数据传输方法。
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