WO2021164754A1 - 数据传输方法、设备及介质 - Google Patents

数据传输方法、设备及介质 Download PDF

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Publication number
WO2021164754A1
WO2021164754A1 PCT/CN2021/077006 CN2021077006W WO2021164754A1 WO 2021164754 A1 WO2021164754 A1 WO 2021164754A1 CN 2021077006 W CN2021077006 W CN 2021077006W WO 2021164754 A1 WO2021164754 A1 WO 2021164754A1
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WO
WIPO (PCT)
Prior art keywords
target device
relay terminal
notification information
terminal device
target
Prior art date
Application number
PCT/CN2021/077006
Other languages
English (en)
French (fr)
Inventor
杨晓东
鲍炜
刘进华
Original Assignee
维沃移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to EP21756586.0A priority Critical patent/EP4106392A4/en
Publication of WO2021164754A1 publication Critical patent/WO2021164754A1/zh
Priority to US17/889,353 priority patent/US20220394553A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/0875—Load balancing or load distribution to or through Device to Device [D2D] links, e.g. direct-mode links
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H04W28/12—Flow control between communication endpoints using signalling between network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H04W28/14—Flow control between communication endpoints using intermediate storage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/03—Reselecting a link using a direct mode connection
    • H04W36/033—Reselecting a link using a direct mode connection in pre-organised networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/305—Handover due to radio link failure

Definitions

  • the embodiments of the present invention relate to the field of communication technologies, and in particular, to a data transmission method, device, and medium.
  • Both the Long Term Evolution (LTE) system and the New Radio (NR) system can support sidelinks.
  • Sidelink can enable terminal devices to directly transmit data without using network devices, such as vehicle to everything (V2X) communication.
  • V2X vehicle to everything
  • the communication data between the remote terminal device and the base station may need to be forwarded through at least one relay terminal device.
  • each relay terminal device may not be able to forward data in a timely manner, resulting in accumulation of data to be forwarded in the relay terminal device, which in turn causes the loss of the data to be forwarded, and reduces the reliability of data transmission.
  • the embodiments of the present invention provide a data transmission method, equipment, and medium to solve the problem that the relay terminal equipment in the prior art cannot forward data in time, which causes the accumulation of data to be forwarded.
  • the present invention is implemented as follows:
  • an embodiment of the present invention provides a data transmission method, which is applied to a relay terminal device, and includes:
  • the first notification information is sent to the second target device; wherein the first notification information is used to make the second target device lower to the relay terminal
  • the data transmission traffic transmitted by the device may cause the second target device to stop data transmission with the relay terminal device.
  • an embodiment of the present invention provides a data transmission method, which is applied to a first target device, the first target device is in communication connection with a second target device, the first target device is the upstream node device of the relay terminal device, and the first target device is the upstream node device of the relay terminal device.
  • the target device is a downstream node device of the relay terminal device, and the method includes:
  • the fourth notification information is sent to the second target device; wherein the fourth notification information is used to make the second target device lower to the relay terminal
  • the data transmission traffic transmitted by the device may cause the second target device to stop data transmission with the relay terminal device.
  • an embodiment of the present invention provides a relay terminal device, including:
  • the first information sending module is configured to send first notification information to the second target device when the wireless link between the relay terminal device and the first target device is abnormal; wherein the first notification information is used to make the first target device
  • the second target device reduces the data transmission traffic to the relay terminal device or causes the second target device to stop data transmission with the relay terminal device.
  • an embodiment of the present invention provides a first target device, the first target device is in a communication connection with a second target device, the first target device is an upstream node device of the relay terminal device, and the second target device is a relay A downstream node device of the terminal device, the first target device includes:
  • the third information sending module is used to send fourth notification information to the second target device when the wireless link between the relay terminal device and the first target device is abnormal; wherein the fourth notification information is used to make the first target device
  • the second target device reduces the data transmission traffic to the relay terminal device or causes the second target device to stop data transmission with the relay terminal device.
  • an embodiment of the present invention provides a relay terminal device, including a processor, a memory, and a computer program stored on the memory and running on the processor.
  • the computer program is executed by the processor, the implementation is as in the first aspect. The steps of the data transmission method.
  • an embodiment of the present invention provides a first target device, the first target device is in a communication connection with a second target device, the first target device is an upstream node device of the relay terminal device, and the second target device is a relay A downstream node device of a terminal device.
  • the first target device includes a processor, a memory, and a computer program stored in the memory and running on the processor. When the computer program is executed by the processor, the data transmission as described in the second aspect is realized Method steps.
  • an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the data transmission method as described in the first aspect or the second aspect is implemented A step of.
  • the first notification information can be directly sent to the second target device, so that the second target device can follow the first notification
  • the information reduces the data transmission traffic to the relay terminal device, or causes the second target device to stop data transmission with the relay terminal device according to the first notification information, so that the relay terminal device can control the second target device to send it to it.
  • the transmitted data transmission flow prevents the data to be forwarded in the relay terminal equipment from being forwarded in time, thereby avoiding the accumulation of the data to be forwarded in the relay terminal equipment, avoiding the loss of the data to be forwarded, and improving the reliability of data transmission.
  • Figure 1 is a system architecture diagram of a sidelink transmission system
  • Figure 2 is a system architecture diagram of another sidelink transmission system
  • Figure 3 is a system architecture diagram of another sidelink transmission system
  • FIG. 4 is a schematic flowchart of an embodiment of a data transmission method provided by the present invention.
  • FIG. 5 is a schematic flowchart of another embodiment of a data transmission method provided by the present invention.
  • FIG. 6 is a schematic structural diagram of an embodiment of a relay terminal device provided by the present invention.
  • FIG. 7 is a schematic structural diagram of an embodiment of a first target device provided by the present invention.
  • FIG. 8 is a schematic diagram of the hardware structure of an embodiment of the relay terminal device provided by the present invention.
  • Figure 1 shows a system architecture diagram of a sidelink transmission system.
  • the sidelink transmission system can be applied to LTE systems, NR systems, and integrated access and backhaul (IAB) systems.
  • the sidelink transmission system can include base stations 110, relay user equipment ( User Equipment (UE) 120 and remote UE 130.
  • UE User Equipment
  • the remote UE 130 may be a device used by the user, including but not limited to a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, and a pedometer.
  • the relay UE 120 can communicate with the remote UE 130 through a sidelink interface, and communicate with the base station 110 through a user-uplink (User-uplink, Uu) interface for radio resource control (Radio Resource Control, RRC) communication connection, and the relay The UE 120 may be used to forward the data transmitted by the remote UE 130 to the base station 110.
  • Uu user-uplink
  • RRC Radio Resource Control
  • the base station 110 is the upstream node device of the relay UE 120
  • the remote UE 130 is the downstream node device of the relay UE 120.
  • Figure 2 shows a system architecture diagram of another sidelink transmission system.
  • the sidelink transmission system can be applied to LTE systems, NR systems, and IAB systems.
  • the sidelink transmission system can include a base station 210, a first relay UE 220, a second relay UE 230, and a remote UE 240.
  • the remote UE 240 may be a device used by the user, including but not limited to a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, and a pedometer.
  • the second relay UE 230 can communicate with the remote UE 240 and the first relay UE 220 through the sidelink interface.
  • the second relay UE 230 can be used to forward the data transmitted by the remote UE 240 to the first relay.
  • UE 220 may also perform an RRC communication connection with the base station 210 through a Uu interface, and the first relay UE 220 may be used to forward data transmitted thereto by the second relay UE 230 to the base station 210.
  • the base station 210 is the upstream node equipment of the first relay UE 220
  • the second relay UE 230 is the downstream node equipment of the first relay UE 220
  • the first relay UE 220 is the second intermediate Following the upstream node device of the UE 230
  • the remote UE 240 is the downstream node device of the second relay UE 230.
  • Figure 3 shows a system architecture diagram of another sidelink transmission system.
  • the sidelink transmission system can be applied to LTE systems, NR systems, and IAB systems.
  • the sidelink transmission system can include a base station 210, a first relay UE 220, a second relay UE 230, and a remote UE 240.
  • the remote UE 240 may be a device used by the user, including but not limited to a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, and a pedometer.
  • the second relay UE 230 can communicate with the remote UE 240 and the first relay UE 220 through the sidelink interface.
  • the second relay UE 230 can be used to forward the data transmitted by the remote UE 240 to the first relay.
  • UE 220 may also perform an RRC communication connection with the base station 210 through a Uu interface.
  • the first relay UE 220 may also perform an RRC communication connection with the base station 210 through a Uu interface, and the first relay UE 220 may be used to forward data transmitted thereto by the second relay UE 230 to the base station 210.
  • the first relay UE 220 and the second relay UE 230 may be unified by the base station 210 to perform flow control.
  • the base station 210 is the upstream node device of the first relay UE 220
  • the second relay UE 230 is the downstream node device of the first relay UE 220
  • the first relay UE 220 is the upstream node device of the second relay UE 230
  • the remote UE 240 is a downstream node device of the second relay UE 230.
  • each relay UE may not be able to forward data in time. At this time, the relay UE cannot control the amount of data it receives. , Resulting in accumulation of the data to be forwarded in the relay UE, which in turn causes the loss of the data to be forwarded, and reduces the reliability of data transmission.
  • embodiments of the present invention provide a data transmission method, device, and medium.
  • the data transmission method provided by the embodiment of the present invention will be described in detail.
  • FIG. 4 shows a schematic flowchart of an embodiment of a data transmission method provided by the present invention.
  • the method shown in FIG. 4 may be executed by a relay terminal device.
  • the relay terminal device may be any one of a single-hop, double-hop, or multi-hop sidelink transmission system for upstream A device that performs a data forwarding function between a node device and a downstream node device.
  • the relay terminal device may be the relay UE 120 shown in FIG. 1, and for another example, the relay terminal device may be the one shown in FIG. 2 or FIG.
  • the data transmission method may include:
  • the first notification information is used to enable the second target device to reduce the data transmission traffic transmitted to the relay terminal device or to stop the data transmission between the second target device and the relay terminal device.
  • the first notification information can be directly sent to the second target device, so that the second target device can follow the first notification
  • the information reduces the data transmission traffic to the relay terminal device, or causes the second target device to stop data transmission with the relay terminal device according to the first notification information, so that the relay terminal device can control the second target device to send it to it.
  • the transmitted data transmission flow prevents the data to be forwarded in the relay terminal equipment from being forwarded in time, thereby avoiding the accumulation of the data to be forwarded in the relay terminal equipment, thereby avoiding the loss of the data to be forwarded, and improving the reliability of data transmission.
  • the abnormal wireless link between the relay terminal device and the first target device may include at least one of the following:
  • the wireless link connection or handover between the relay terminal device and the first target device fails
  • the signal quality of the wireless interface between the first target device and the relay terminal device is less than a preset quality threshold
  • the amount of data buffered by the relay terminal device is greater than or equal to a predetermined number threshold
  • the radio link connection failure judgment timer T310 between the relay terminal device and the first target device is started;
  • the radio link re-establishment timer T311 between the relay terminal device and the first target device is started.
  • the relay terminal when the radio link connection or handover between the relay terminal device and the first target device fails, or the radio link connection failure judgment timer T310 starts, or the radio link reestablishment timer T311 starts, the relay terminal is explained
  • the wireless connection between the device and the first target device is abnormal. Therefore, it can be determined that the wireless link between the relay terminal device and the first target device is abnormal.
  • the quality of the wireless interface signal between the first target device and the relay terminal device is less than the preset quality threshold, it means that the quality of the communication signal between the relay terminal device and the first target device is poor, and the relay terminal device cannot communicate normally.
  • the first target device transmits data. Therefore, it can be determined that the wireless link between the relay terminal device and the first target device is abnormal.
  • the amount of data buffered by the relay terminal equipment is greater than or equal to the predetermined number threshold, it means that there is too much data to be forwarded accumulated in the relay terminal equipment, and the reason for the excessive data to be forwarded accumulated in the relay terminal equipment may be relay
  • the terminal device cannot normally transmit data to the first target device. Therefore, it can be determined that the wireless link between the relay terminal device and the first target device is abnormal.
  • the wireless interface signal refers to the interface test signal sent by the first target device to the relay terminal device through the wireless link interface.
  • the wireless link interface may include at least one of a sidelink interface and a Uu interface.
  • the specific method for determining the signal quality of the wireless interface may include:
  • the signal quality of the wireless interface is determined according to the signal strength and/or signal power of the received interface test signal.
  • the first target device sends an interface test signal to the relay terminal device every predetermined time interval, and the relay terminal device can determine the signal strength of the first target device sent by the first target device as a wireless Interface signal quality.
  • the preset quality threshold includes a preset strength threshold, and the relay terminal device can compare the determined signal strength with the preset strength threshold, and if the determined signal strength is less than the preset strength threshold, the determination is in progress. The wireless link between the subsequent terminal device and the first target device is abnormal.
  • the first target device sends interface test signals to the relay terminal device every predetermined time interval, and the relay terminal device can determine the signal power of the first target device sent by the first target device as The signal quality of the wireless interface.
  • the preset quality threshold includes a preset power threshold, and the relay terminal device can compare the determined signal power with the preset power threshold, and if the determined signal power is less than the preset power threshold, the determination is in progress The wireless link between the subsequent terminal device and the first target device is abnormal.
  • the first target device sends an interface test signal to the relay terminal device every predetermined time interval, and the relay terminal device can also determine the signal strength and the signal strength of the first target device sent by the first target device.
  • the weighted sum of signal power is used as the signal quality of the wireless interface.
  • the relay terminal device may compare the determined weighted sum with the preset power threshold, and if the determined weighted sum is less than the preset power threshold, determine the wireless link between the relay terminal device and the first target device The road is abnormal.
  • the first target device may be an upstream node device of the relay terminal device
  • the second target device may be a downstream node device of the relay terminal device
  • the relay terminal device can notify its downstream node device to reduce the data transmission traffic to the relay terminal device or stop communicating with the relay terminal device. Data transfer.
  • the downstream node equipment of the relay terminal equipment may be other relay terminal equipment or remote terminal equipment.
  • the remote terminal device may be the remote UE 130 shown in FIG. 1 or the remote UE 240 shown in FIG. 2 or FIG. 3, and these devices and the relay terminal device communicate through a sidelink interface. Therefore, in these embodiments, the relay terminal device may send the first notification information to the second target device through the sidelink interface.
  • the first notification information may notify the second target device to reduce the amount of data transmitted to the relay terminal device, or reduce the transmission speed of the data transmitted to the relay terminal device, or stop the transmission of data to the relay terminal device, or The reselection process of the second target device is triggered, so that the second target device reduces the data transmission flow to the relay terminal device or stops data transmission with the relay terminal device.
  • the first notification information may include at least one of the following:
  • Notification information used to instruct the second target device to stop sending data to the relay terminal device, which enables the second target device to stop sending data to the relay terminal device in response to the first notification information after receiving the first notification information ;
  • the notification information used to instruct the second target device to stop sending the data type which enables the second target device to stop sending the data type corresponding to the relay terminal device in response to the first notification information after receiving the first notification information Data;
  • the data type includes at least one of transmission resources, transmission carriers, logical channels, and services;
  • the notification information used to indicate the stop sending duration of the second target device which enables the second target device to stop sending data to the relay terminal device within the stop sending duration in response to the first notification information after receiving the first notification information ;
  • the stop sending duration is used to indicate the duration of the second target device to stop sending;
  • the notification information used to indicate the data transmission rate to be changed of the second target device can enable the second target device to respond to the first notification information after receiving the first notification information and send the data transmission rate to the center at the data transmission rate to be changed. Then the terminal device sends data; among them, the data transmission rate to be changed is used to indicate the reduced data transmission rate;
  • the notification information used to instruct the second target device to perform transmission resource reselection can enable the second target device to trigger the transmission resource reselection in response to the first notification information after receiving the first notification information;
  • the notification information used to instruct the second target device to perform transmission carrier reselection which enables the second target device to trigger the transmission carrier reselection in response to the first notification information after receiving the first notification information;
  • the notification information used to instruct the second target device to perform the reselection of the relay terminal device may enable the second target device to trigger the reselection of the relay terminal device in response to the first notification information after receiving the first notification information.
  • the data transmission rate to be changed may be determined by the relay terminal device according to the degree of abnormality of the wireless link between the relay terminal device and the first target device, and the data transmission rate to be changed It can also be a preset data transmission rate, which is not limited here.
  • the relay terminal device when the relay terminal device finds that the wireless link communication between its upstream node device is not good, it can directly notify its downstream node device to reduce or stop sending data to it through the sidelink interface, so as to avoid waiting in the relay terminal device.
  • the forwarded data cannot be forwarded in time, thereby avoiding the accumulation of the data to be forwarded in the relay terminal equipment, thereby avoiding the loss of the data to be forwarded, and improving the reliability of data transmission.
  • the first target device when the first target device is a network device, the first target device may also be communicatively connected with the second target device.
  • the upstream node device of the relay terminal device can also directly communicate with the downstream node device of the relay terminal device.
  • the data transmission method may further include:
  • the second notification information is sent to the first target device.
  • the second notification information is used to characterize the abnormality of the wireless link between the relay terminal device and the first target device, and is used to generate the third notification information by the first target device.
  • the third notification information is used by the first target device to send to the second target device, and used to make the second target device reduce the data transmission traffic to the relay terminal device or stop the second target device from communicating with the relay terminal device Data transfer.
  • the relay terminal device In the case that the wireless link between the relay terminal device and its upstream node device is abnormal, if there is still a lot of data to be sent between the relay terminal device and its downstream node device before sending the first notification information, the relay terminal device The device cannot send the first notification information to its downstream node device in time. At this time, the relay terminal device can report to its upstream node device that the wireless link between the relay terminal device and its upstream node device is abnormal through the second notification information, and notify its downstream node device to reduce the relay to the relay terminal device through its upstream node device. The data transmission flow transmitted by the terminal device or stop the data transmission with the relay terminal device.
  • the relay terminal device may send the second notification information to its upstream node device, so that the upstream node device determines that the radio link between the relay terminal device and the relay terminal device is abnormal, so that the upstream node device responds to the second
  • the notification information after generating the third notification information based on the second notification information, send the third notification information to the downstream node device of the relay terminal device to notify the downstream node device to reduce to the relay terminal device through the third notification information
  • the transmitted data transmission flow may stop the data transmission with the relay terminal device.
  • the upstream node device of the relay terminal device may be other relay terminal devices or network devices.
  • the network device may be the base station 11 shown in FIG. 1 or the base station 210 shown in FIG. 2 or FIG. 3.
  • Other relay terminal equipment and the downstream node equipment of the relay terminal equipment communicate through the sidelink interface, and the network equipment and the downstream node equipment of the relay terminal equipment communicate through the Uu interface.
  • the first target device may send the third notification information to the second target device through the sidelink interface or the Uu interface
  • the relay terminal device may send the second notification to the first target device through the sidelink interface or the Uu interface information.
  • the third notification information may notify the second target device to reduce the amount of data transmitted to the relay terminal device, or reduce the transmission speed of the data transmitted to the relay terminal device, or stop the transmission of data to the relay terminal device, or The reselection process of the second target device is triggered, so that the second target device reduces the data transmission flow to the relay terminal device or stops data transmission with the relay terminal device.
  • the third notification information may include at least one of the following:
  • Notification information used to instruct the second target device to stop sending data to the relay terminal device
  • Notification information used to indicate the stop sending duration of the second target device
  • Notification information used to indicate the to-be-changed data transmission rate of the second target device
  • the notification information used to indicate the optional relay terminal device of the second target device.
  • the content of the third notification information that is similar to the first notification information will not be repeated here.
  • the third notification information is used to indicate the notification information of the optional relay terminal device of the second target device, so that the second target device can determine the relay terminal device that it can select when the relay terminal device is reselected.
  • the optional relay terminal device is a relay terminal device designated by the first target device to the second target device that can be reselected.
  • the relay terminal device finds that the wireless link communication between its upstream node device is not good, its upstream node device can notify its downstream node device to reduce or stop sending data to it through the sidelink interface, avoiding the relay terminal
  • the data to be forwarded in the device cannot be forwarded in time, thereby avoiding the accumulation of the data to be forwarded in the relay terminal device, avoiding the loss of the data to be forwarded, and improving the reliability of data transmission.
  • the first target device may be a downstream node device of the relay terminal device
  • the second target device may be an upstream node device of the relay terminal device
  • the relay terminal device can notify its upstream node device to reduce the data transmission traffic to the relay terminal device or stop communicating with the relay terminal device. Data transfer.
  • the upstream node device of the relay terminal device can be other relay terminal devices or network devices.
  • the network device may be the base station 110 shown in FIG. 1 or the base station 210 shown in FIG. 2 or FIG. 3.
  • Other relay terminal equipment and relay terminal equipment communicate through the sidelink interface, and the network equipment and relay terminal equipment communicate through the Uu interface.
  • the relay terminal device may send the first notification information to the second target device through the sidelink interface or the Uu interface.
  • the first notification information may notify the second target device to reduce the amount of data transmitted to the relay terminal device or to reduce the transmission speed of the data transmitted to the relay terminal device, so that the second target device reduces the amount of data transmitted to the relay terminal device.
  • the first notification information may include at least one of the following:
  • Notification information used to instruct the second target device to stop sending data to the relay terminal device
  • Notification information used to indicate the stop sending duration of the second target device
  • Notification information used to indicate the to-be-changed data transmission rate of the second target device.
  • the relay terminal device finds that the wireless link communication between its downstream node device is not good, it can directly notify its upstream node device to reduce or stop sending data to it through the sidelink interface, so as to avoid waiting in the relay terminal device.
  • the forwarded data cannot be forwarded in time, thereby avoiding the accumulation of the data to be forwarded in the relay terminal equipment, avoiding the loss of the data to be forwarded, and improving the reliability of data transmission.
  • the relay terminal device when the relay terminal device determines that the wireless link between it and the first target device is abnormal, it reasonably controls the data transmitted to it by the second target device.
  • the traffic is transmitted, so as to prevent the data to be forwarded in the relay terminal equipment from being forwarded in time, thereby avoiding the accumulation of the data to be forwarded in the relay terminal equipment, avoiding the loss of the data to be forwarded, and improving the reliability of data transmission.
  • FIG. 5 shows a schematic flowchart of another embodiment of the data transmission method provided by the present invention.
  • the method shown in FIG. 5 may be executed by a first target device, the first target device may be communicatively connected with the second target device, and the first target device may be an upstream node device of the relay terminal device,
  • the second target device may be a downstream node device of the relay terminal device.
  • the relay terminal device may be any one of a single-hop, double-hop, or multi-hop sidelink transmission system, which is used to perform a data forwarding function between an upstream node device and a downstream node device.
  • the first target device may be the base station 210 shown in FIG. 3
  • the relay terminal device may be the first relay UE 220 shown in FIG. 3
  • the second target device may be the second relay UE 220 shown in FIG.
  • the first target device may be the first relay UE 220 shown in FIG. 3, and the relay terminal device It may be the second relay UE 230 shown in FIG. 3, and the second target device may be the remote UE 240 shown in FIG. 3.
  • the data transmission method may include:
  • the fourth notification information is used to cause the second target device to reduce the data transmission traffic transmitted to the relay terminal device or to cause the second target device to stop data transmission with the relay terminal device.
  • the first target device can directly send the fourth notification information to the second target device when the wireless link between the relay terminal device and the first target device is abnormal, so that the second target device Reduce the data transmission traffic to the relay terminal device according to the fourth notification information, or make the second target device stop data transmission with the relay terminal device according to the fourth notification information, so that the first target device can control the second
  • the data transmission traffic transmitted by the target device to the relay terminal device prevents the data to be forwarded in the relay terminal device from being forwarded in time, thereby avoiding the accumulation of the data to be forwarded in the relay terminal device, avoiding the loss of the data to be forwarded, and improving the data Reliability of transmission.
  • the abnormal wireless link between the relay terminal device and the first target device may include at least one of the following:
  • the wireless link connection or handover between the relay terminal device and the first target device fails
  • the signal quality of the wireless interface between the first target device and the relay terminal device is less than a preset quality threshold
  • the amount of data buffered by the relay terminal device is greater than or equal to a predetermined number threshold
  • the radio link connection failure judgment timer T310 between the relay terminal device and the first target device is started;
  • the radio link re-establishment timer T311 between the relay terminal device and the first target device is started.
  • the method for the first target device to determine that the radio link between the relay terminal device and the first target device is abnormal is similar to the method in the embodiment shown in FIG. 4, and will not be repeated here.
  • the fourth notification information may include at least one of the following:
  • Notification information used to instruct the second target device to stop sending data to the relay terminal device
  • Notification information used to indicate the stop sending duration of the second target device
  • Notification information used to indicate the to-be-changed data transmission rate of the second target device
  • the notification information used to indicate the optional relay terminal device of the second target device.
  • the fourth notification information is similar to the third notification information in the embodiment shown in FIG. 4, and will not be repeated here.
  • Fig. 6 shows a schematic structural diagram of an embodiment of a relay terminal device provided by the present invention.
  • the relay terminal device shown in FIG. 6 may be any one of a single-hop, double-hop, or multi-hop sidelink transmission system for data forwarding between the upstream node device and the downstream node device.
  • Functional equipment may be the relay terminal device 120 shown in FIG. 1.
  • the relay terminal device may be the first relay UE 220 or the second relay UE 230 shown in FIG. 2 or FIG. 3.
  • the relay terminal device 400 may include:
  • the first information sending module 410 is configured to send first notification information to the second target device when the wireless link between the relay terminal device and the first target device is abnormal.
  • the first notification information is used to cause the second target device to reduce the data transmission flow to the relay terminal device or to stop the data transmission between the second target device and the relay terminal device.
  • the relay terminal device can directly send the first notification information to the second target device when the wireless link between the relay terminal device and the first target device is abnormal, so that the second target device
  • the device reduces the data transmission traffic to the relay terminal device according to the first notification information, or causes the second target device to stop data transmission with the relay terminal device according to the first notification information, so that the relay terminal device can control the first notification information.
  • the data transmission flow transmitted by the target device to it prevents the data to be forwarded in the relay terminal equipment from being forwarded in time, thereby avoiding the accumulation of the data to be forwarded in the relay terminal equipment, avoiding the loss of the data to be forwarded, and improving the data transmission reliability.
  • the abnormal wireless link between the relay terminal device and the first target device includes at least one of the following:
  • the wireless link connection or handover between the relay terminal device and the first target device fails
  • the signal quality of the wireless interface between the first target device and the relay terminal device is less than a preset quality threshold
  • the amount of data buffered by the relay terminal device is greater than or equal to a predetermined number threshold
  • the radio link connection failure judgment timer between the relay terminal device and the first target device is started;
  • the radio link re-establishment timer between the relay terminal device and the first target device is started.
  • the first target device is an upstream node device of the relay terminal device
  • the second target device is a downstream node device of the relay terminal device
  • the first notification information includes at least one of the following:
  • Notification information used to instruct the second target device to stop sending data to the relay terminal device
  • Notification information used to indicate the stop sending duration of the second target device
  • Notification information used to indicate the to-be-changed data transmission rate of the second target device
  • Notification information used to instruct the second target device to perform relay terminal device reselection is not limited to:
  • the first target device may also be communicatively connected with the second target device.
  • the relay terminal device 400 may further include:
  • the second information sending module is configured to send second notification information to the first target device when the wireless link is abnormal.
  • the second notification information is used to characterize the abnormality of the wireless link, and is used for the first target device to generate the third notification information.
  • the third notification information is used by the first target device to send to the second target device, and used to make the second target device reduce the data transmission traffic to the relay terminal device or stop the second target device from communicating with the relay terminal device Data transfer.
  • the third notification information includes at least one of the following:
  • Notification information used to instruct the second target device to stop sending data to the relay terminal device
  • Notification information used to indicate the stop sending duration of the second target device
  • Notification information used to indicate the to-be-changed data transmission rate of the second target device
  • the notification information used to indicate the optional relay terminal device of the second target device.
  • the first target device is a downstream node device of the relay terminal device
  • the second target device is an upstream node device of the relay terminal device
  • the first notification information includes at least one of the following:
  • Notification information used to instruct the second target device to stop sending data to the relay terminal device
  • Notification information used to indicate the stop sending duration of the second target device
  • Notification information used to indicate the to-be-changed data transmission rate of the second target device.
  • the relay terminal device 400 provided in the embodiment of the present invention can implement various processes and effects implemented by the relay terminal device in the method embodiment shown in FIG.
  • FIG. 7 shows a schematic structural diagram of an embodiment of the first target device provided by the present invention.
  • the first target device 700 shown in FIG. 7 may be communicatively connected with the second target device, the first target device 700 may be the upstream node device of the relay terminal device, and the second target device may be the middle device.
  • the relay terminal device may be any one of a single-hop, double-hop, or multi-hop sidelink transmission system, which is used to perform a data forwarding function between an upstream node device and a downstream node device.
  • the first target device may be the base station 210 shown in FIG. 3
  • the relay terminal device may be the first relay UE 220 shown in FIG. 3
  • the second target device may be the second relay UE 220 shown in FIG. Relay UE230.
  • the first target device may be the first relay UE 220 shown in FIG. 3, and the relay terminal device It may be the second relay UE 230 shown in FIG. 3, and the second target device may be the remote UE 240 shown in FIG. 3.
  • the first target device 700 may include:
  • the third information sending module 710 is configured to send fourth notification information to the second target device when the wireless link between the relay terminal device and the first target device is abnormal.
  • the fourth notification information is used to cause the second target device to reduce the data transmission traffic transmitted to the relay terminal device or to cause the second target device to stop data transmission with the relay terminal device.
  • the first target device can directly send the fourth notification information to the second target device when the wireless link between the relay terminal device and the first target device is abnormal, so that the second target device Reduce the data transmission traffic to the relay terminal device according to the fourth notification information, or make the second target device stop data transmission with the relay terminal device according to the fourth notification information, so that the first target device can control the second
  • the data transmission traffic transmitted by the target device to the relay terminal device prevents the data to be forwarded in the relay terminal device from being forwarded in time, thereby avoiding the accumulation of the data to be forwarded in the relay terminal device, avoiding the loss of the data to be forwarded, and improving the data Reliability of transmission.
  • the abnormal wireless link between the relay terminal device and the first target device may include at least one of the following:
  • the wireless link connection or handover between the relay terminal device and the first target device fails
  • the signal quality of the wireless interface between the first target device and the relay terminal device is less than a preset quality threshold
  • the amount of data buffered by the relay terminal device is greater than or equal to a predetermined number threshold
  • the radio link connection failure judgment timer between the relay terminal device and the first target device starts;
  • the radio link re-establishment timer between the relay terminal device and the first target device is started.
  • the fourth notification information may include at least one of the following:
  • Notification information used to instruct the second target device to stop sending data to the relay terminal device
  • Notification information used to indicate the stop sending duration of the second target device
  • Notification information used to indicate the to-be-changed data transmission rate of the second target device
  • the notification information used to indicate the optional relay terminal device of the second target device.
  • the relay terminal device 700 provided in the embodiment of the present invention can implement the various processes and effects achieved by the first target device in the method embodiment of FIG. 5, and to avoid repetition, details are not described herein again.
  • FIG. 8 is a schematic diagram of the hardware structure of an embodiment of the relay terminal device provided by the present invention.
  • the relay terminal device 500 includes but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, The memory 509, the processor 510, and the power supply 511 and other components.
  • a radio frequency unit 501 includes but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508,
  • the memory 509, the processor 510, and the power supply 511 and other components The memory 509, the processor 510, and the power supply 511 and other components.
  • the relay terminal device may include more or less components than those shown in the figure, or a combination of certain components. Components, or different component arrangements.
  • the processor 510 is configured to send first notification information to the second target device when the wireless link between the relay terminal device and the first target device is abnormal; wherein, the first notification information is used to enable the first target device to The second target device reduces the data transmission traffic to the relay terminal device or causes the second target device to stop data transmission with the relay terminal device.
  • the first notification information can be directly sent to the second target device, so that the second target device can follow the first notification
  • the information reduces the data transmission traffic to the relay terminal device, or causes the second target device to stop data transmission with the relay terminal device according to the first notification information, so that the relay terminal device can control the second target device to send it to it.
  • the transmitted data transmission flow prevents the data to be forwarded in the relay terminal equipment from being forwarded in time, thereby avoiding the accumulation of the data to be forwarded in the relay terminal equipment, avoiding the loss of the data to be forwarded, and improving the reliability of data transmission.
  • the radio frequency unit 501 may be used for receiving and sending signals during information transmission and reception or during a call. Specifically, after receiving the downlink data from the base station, it is processed by the processor 510; in addition, the uplink data is sent to the base station.
  • the radio frequency unit 501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the radio frequency unit 501 can also communicate with the network and other devices through a wireless communication system.
  • the relay terminal device provides users with wireless broadband Internet access through the network module 502, such as helping users to send and receive emails, browse web pages, and access streaming media.
  • the audio output unit 503 can convert the audio data received by the radio frequency unit 501 or the network module 502 or stored in the memory 509 into an audio signal and output it as sound. Moreover, the audio output unit 503 may also provide audio output related to a specific function performed by the relay terminal device 500 (for example, call signal reception sound, message reception sound, etc.).
  • the audio output unit 503 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 504 is used to receive audio or video signals.
  • the input unit 504 may include a graphics processing unit (GPU) 5041 and a microphone 5042.
  • the graphics processor 5041 is configured to monitor images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed.
  • the processed image frame may be displayed on the display unit 506.
  • the image frame processed by the graphics processor 5041 may be stored in the memory 509 (or other storage medium) or sent via the radio frequency unit 501 or the network module 502.
  • the microphone 5042 can receive sound, and can process such sound into audio data.
  • the processed audio data can be converted into a format that can be sent to a mobile communication base station via the radio frequency unit 501 for output in the case of a telephone call mode.
  • the relay terminal device 500 also includes at least one sensor 505, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display panel 5061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 5061 and/or the backlight when the relay terminal device 500 is moved to the ear.
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the relay terminal equipment (such as horizontal and vertical screen switching, Related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tap), etc.; sensor 505 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, Thermometers, infrared sensors, etc., will not be repeated here.
  • the display unit 506 is used to display information input by the user or information provided to the user.
  • the display unit 506 may include a display panel 5061, and the display panel 5061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.
  • LCD liquid crystal display
  • OLED organic light-emitting diode
  • the user input unit 507 may be used to receive inputted numeric or character information, and generate key signal input related to user settings and function control of the relay terminal device.
  • the user input unit 507 includes a touch panel 5071 and other input devices 5072.
  • the touch panel 5071 also known as a touch screen, can collect the user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 5071 or near the touch panel 5071. operate).
  • the touch panel 5071 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 510, the command sent by the processor 510 is received and executed.
  • the touch panel 5071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave.
  • the user input unit 507 may also include other input devices 5072.
  • other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
  • the touch panel 5071 can be overlaid on the display panel 5061.
  • the touch panel 5071 detects a touch operation on or near it, it is transmitted to the processor 510 to determine the type of touch event, and then the processor 510 determines the type of the touch event according to the touch.
  • the type of event provides corresponding visual output on the display panel 5061.
  • the touch panel 5071 and the display panel 5061 are used as two independent components to implement the input and output functions of the relay terminal device, in some embodiments, the touch panel 5071 and the display panel 5061 is integrated to realize the input and output functions of the relay terminal equipment, which is not specifically limited here.
  • the interface unit 508 is an interface for connecting an external device and the relay terminal device 500.
  • the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc.
  • the interface unit 508 can be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the relay terminal device 500 or can be used to connect to the relay terminal. Data is transferred between the device 500 and external devices.
  • the memory 509 can be used to store software programs and various data.
  • the memory 509 may mainly include a storage program area and a storage data area.
  • the storage program area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of mobile phones (such as audio data, phone book, etc.), etc.
  • the memory 509 may include a high-speed random access memory, and may also 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 processor 510 is the control center of the relay terminal device. It uses various interfaces and lines to connect the various parts of the entire relay terminal device, runs or executes the software programs and/or modules stored in the memory 509, and calls the storage
  • the data in 509 performs various functions of the relay terminal equipment and processes data, so as to monitor the relay terminal equipment as a whole.
  • the processor 510 may include one or more processing units; preferably, the processor 510 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, application programs, etc., and the modem
  • the processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 510.
  • the relay terminal device 500 may also include a power source 511 (such as a battery) for supplying power to various components.
  • a power source 511 such as a battery
  • the power source 511 may be logically connected to the processor 510 through a power management system, so as to manage charging, discharging, and power management through the power management system. Consumption management and other functions.
  • the relay terminal device 500 includes some functional modules that are not shown, which will not be repeated here.
  • the embodiment of the present invention also provides a relay terminal device, including a processor 510, a memory 509, a computer program stored in the memory 509 and running on the processor 510, and the computer program is executed by the processor 510.
  • a relay terminal device including a processor 510, a memory 509, a computer program stored in the memory 509 and running on the processor 510, and the computer program is executed by the processor 510.
  • the embodiment of the present invention also provides a first target device, the first target device is in communication connection with the second target device, the first target device is the upstream node device of the relay terminal device, and the second target device is the relay terminal
  • the downstream node equipment of the device includes a processor, a memory, and a computer program stored on the memory and running on the processor.
  • the computer program is executed by the processor, each process of the above-mentioned data transmission method embodiment is realized, and the same can be achieved. The technical effect, in order to avoid repetition, will not be repeated here.
  • the embodiment of the present invention also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer program is executed by a processor, each process of the above-mentioned data transmission method embodiment is realized, and the same technology can be achieved. The effect, in order to avoid repetition, will not be repeated here.
  • the computer-readable storage medium may include non-transitory computer-readable storage media, such as read-only memory (Read-Only Memory, ROM for short), Random Access Memory (RAM for short), and magnetic disks. Or CD etc.
  • the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present invention.
  • a terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.
  • each block in the flowchart and/or block diagram and the combination of each block in the flowchart and/or block diagram can be implemented by a program or instruction.
  • These programs or instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to generate a machine such that these programs or instructions are executed by the processor of the computer or other programmable data processing device Enables the realization of functions/actions specified in one or more blocks of the flowchart and/or block diagram.
  • Such a processor can be, but is not limited to, a general-purpose processor, a dedicated processor, a special application processor, or a field programmable logic circuit. It can also be understood that each block in the block diagram and/or flowchart and the combination of the blocks in the block diagram and/or flowchart can also be implemented by dedicated hardware that performs the specified function or action, or can be implemented by dedicated hardware and A combination of computer instructions.

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Abstract

本发明实施例公开了一种数据传输方法、设备及介质。其中，数据传输方法包括: 在中继终端设备与第一目标设备之间的无线链路异常的情况下，向第二目标设备发送第一通知信息; 其中，第一通知信息用于使第二目标设备降低向中继终端设备传输的数据传输流量或使第二目标设备停止与中继终端设备之间的数据传输。

Description

数据传输方法、设备及介质
相关申请的交叉引用
本申请要求享有于2020年02月21日提交的名称为“数据传输方法、设备及介质”的中国专利申请202010109140.8的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本发明实施例涉及通信技术领域，尤其涉及一种数据传输方法、设备及介质。
背景技术
长期演进(Long Term Evolution，LTE)***和新空口(New Radio，NR)***均可以支持副链路(sidelink)。Sidelink可以使得终端设备之间不通过网络设备而直接进行数据传输，例如车联网(vehicle to everything，V2X)通信等。
在利用sidelink进行数据传输的过程中，远端终端设备与基站之间的通信数据可能需要通过至少一个中继终端设备进行转发。其中，每一个中继终端设备可能出现无法及时转发数据的情况，导致中继终端设备中的待转发数据堆积，进而造成待转发数据的丢失，降低了数据传输的可靠性。
发明内容
本发明实施例提供一种数据传输方法、设备及介质，以解决现有技术中的中继终端设备无法及时转发数据，导致待转发数据堆积的问题。
为了解决上述技术问题，本发明是这样实现的：
第一方面，本发明实施例提供了一种数据传输方法，应用于中继终端设备，包括：
在中继终端设备与第一目标设备之间的无线链路异常的情况下，向第二目标设备发送第一通知信息；其中，第一通知信息用于使第二目标设备降低向中继终端设备传输的数据传输流量或使第二目标设备停止与中继终端设备之间的数据传输。
第二方面，本发明实施例提供了一种数据传输方法，应用于第一目标设备，第一目标设备与第二目标设备通信连接，第一目标设备为中继终端设备的上游节点设备，第二目标设备为中继终端设备的下游节点设备，该方法包括：
在中继终端设备与第一目标设备之间的无线链路异常的情况下，向第二目标设备发送第四通知信息；其中，第四通知信息用于使第二目标设备降低向中继终端设备传输的数据传输流量或使第二目标设备停止与中继终端设备之间的数据传输。
第三方面，本发明实施例提供了一种中继终端设备，包括：
第一信息发送模块，用于在中继终端设备与第一目标设备之间的无线链路异常的情况下，向第二目标设备发送第一通知信息；其中，第一通知信息用于使第二目标设备降低向中继终端设备传输的数据传输流量或使第二目标设备停止与中继终端设备之间的数据传输。
第四方面，本发明实施例提供了一种第一目标设备，第一目标设备与第二目标设备通信连接，第一目标设备为中继终端设备的上游节点设备，第二目标设备为中继终端设备的下游节点设备，该第一目标设备包括：
第三信息发送模块，用于在中继终端设备与第一目标设备之间的无线链路异常的情况下，向第二目标设备发送第四通知信息；其中，第四通知信息用于使第二目标设备降低向中继终端设备传输的数据传输流量或使第二目标设备停止与中继终端设备之间的数据传输。
第五方面，本发明实施例提供了一种中继终端设备，包括处理器、存储器及存储在存储器上并可在处理器上运行的计算机程序，计算机程序被处理器执行时实现如第一方面所述的数据传输方法的步骤。
第六方面，本发明实施例提供了一种第一目标设备，第一目标设备与第二目标设备通信连接，第一目标设备为中继终端设备的上游节点设备， 第二目标设备为中继终端设备的下游节点设备，该第一目标设备包括处理器、存储器及存储在存储器上并可在处理器上运行的计算机程序，计算机程序被处理器执行时实现如第二方面所述的数据传输方法的步骤。
第七方面，本发明实施例提供了一种计算机可读存储介质，计算机可读存储介质上存储计算机程序，计算机程序被处理器执行时实现如第一方面或第二方面所述的数据传输方法的步骤。
在本发明实施例中，能够在中继终端设备与第一目标设备之间的无线链路异常的情况下，直接向第二目标设备发送第一通知信息，使第二目标设备根据第一通知信息降低向中继终端设备传输的数据传输流量，或，使第二目标设备根据第一通知信息停止与中继终端设备之间的数据传输，使得中继终端设备能够控制第二目标设备向其传输的数据传输流量，避免中继终端设备中的待转发数据无法及时转发，进而避免中继终端设备中的待转发数据堆积，避免待转发数据的丢失，提高了数据传输的可靠性。
附图说明
从下面结合附图对本发明的具体实施方式的描述中可以更好地理解本发明。其中，相同或相似的附图标记表示相同或相似的特征。
图1为一种sidelink传输***的***架构图；
图2为另一种sidelink传输***的***架构图；
图3为又一种sidelink传输***的***架构图；
图4为本发明提供的数据传输方法的一实施例的流程示意图；
图5为本发明提供的数据传输方法的另一实施例的流程示意图；
图6为本发明提供的中继终端设备的一实施例的结构示意图；
图7为本发明提供的第一目标设备的一实施例的结构示意图；
图8为本发明提供的中继终端设备的一实施例的硬件结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而 不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1示出了一种sidelink传输***的***架构图。
如图1所示，该sidelink传输***可以应用于LTE***、NR***和新接入回传一体化(Integrated Access and Backhaul，IAB)***，该sidelink传输***可以包括基站110、中继用户设备(User Equipment，UE)120和远端UE 130。
其中，远端UE 130可以为用户使用的设备，包括但不限于手机、平板电脑、笔记本电脑、掌上电脑、车载终端、可穿戴设备、以及计步器等。中继UE 120可以与远端UE 130通过sidelink接口通信连接，并且与基站110通过用户-上行链路(User-uplink，Uu)接口进行无线资源控制(Radio Resource Control，RRC)通信连接，中继UE 120可以用于将远端UE 130向其传输的数据转发给基站110。
在这种sidelink传输***中，基站110为中继UE 120的上游节点设备，远端UE 130为中继UE 120的下游节点设备。
图2示出了另一种sidelink传输***的***架构图。
如图2所示，该sidelink传输***可以应用于LTE***、NR***和IAB***，该sidelink传输***可以包括基站210、第一中继UE 220、第二中继UE 230和远端UE 240。
其中，远端UE 240可以为用户使用的设备，包括但不限于手机、平板电脑、笔记本电脑、掌上电脑、车载终端、可穿戴设备、以及计步器等。第二中继UE 230可以与远端UE 240和第一中继UE 220通过sidelink接口通信连接，第二中继UE 230可以用于将远端UE 240向其传输的数据转发给第一中继UE 220。第一中继UE 220还可以与基站210通过Uu接口进行RRC通信连接，第一中继UE 220可以用于将第二中继UE 230向其传输的数据转发给基站210。
在这种sidelink传输***中，基站210为第一中继UE 220的上游节点设备，第二中继UE 230为第一中继UE 220的下游节点设备；第一中继 UE 220为第二中继UE 230的上游节点设备，远端UE 240为第二中继UE 230的下游节点设备。
图3示出了又一种sidelink传输***的***架构图。
如图3所示，该sidelink传输***可以应用于LTE***、NR***和IAB***，该sidelink传输***可以包括基站210、第一中继UE 220、第二中继UE 230和远端UE 240。
其中，远端UE 240可以为用户使用的设备，包括但不限于手机、平板电脑、笔记本电脑、掌上电脑、车载终端、可穿戴设备、以及计步器等。第二中继UE 230可以与远端UE 240和第一中继UE 220通过sidelink接口通信连接，第二中继UE 230可以用于将远端UE 240向其传输的数据转发给第一中继UE 220。第二中继UE 230还可以与基站210通过Uu接口进行RRC通信连接。第一中继UE 220还可以与基站210通过Uu接口进行RRC通信连接，第一中继UE 220可以用于将第二中继UE 230向其传输的数据转发给基站210。
在这种sidelink传输***中，第一中继UE 220和第二中继UE 230可以由基站210统一进行流量控制。基站210为第一中继UE 220的上游节点设备，第二中继UE 230为第一中继UE 220的下游节点设备；第一中继UE 220为第二中继UE 230的上游节点设备，远端UE 240为第二中继UE 230的下游节点设备。
目前，图1至图3所示的sidelink传输***，在进行数据传输的过程中，每一个中继UE均可能出现无法及时转发数据的情况，此时，中继UE无法控制其接收的数据量，导致该中继UE中的待转发数据堆积，进而造成待转发数据的丢失，降低了数据传输的可靠性。
为了解决现有技术中的上述问题，本发明实施例提供了一种数据传输方法、设备及介质。下面，首先对本发明实施例提供的数据传输方法进行详细说明。
图4示出了本发明提供的数据传输方法的一实施例的流程示意图。
在本发明一些实施例中，图4所示的方法可以由中继终端设备执行，具体地，中继终端设备可以为单跳、双跳或者多跳sidelink传输***中的 任一个用于在上游节点设备与下游节点设备之间起到数据转发功能的设备，例如，中继终端设备可以为图1中所示的中继UE 120，再例如，中继终端设备可以为图2或图3中所示的第一中继UE 220或者第二中继UE 230。
如图4所示，该数据传输方法可以包括：
S310、在中继终端设备与第一目标设备之间的无线链路异常的情况下，向第二目标设备发送第一通知信息。
其中，第一通知信息用于使第二目标设备降低向中继终端设备传输的数据传输流量或使第二目标设备停止与中继终端设备之间的数据传输。
在本发明实施例中，能够在中继终端设备与第一目标设备之间的无线链路异常的情况下，直接向第二目标设备发送第一通知信息，使第二目标设备根据第一通知信息降低向中继终端设备传输的数据传输流量，或，使第二目标设备根据第一通知信息停止与中继终端设备之间的数据传输，使得中继终端设备能够控制第二目标设备向其传输的数据传输流量，避免中继终端设备中的待转发数据无法及时转发，进而避免中继终端设备中的待转发数据堆积，从而避免待转发数据的丢失，提高了数据传输的可靠性。
在本发明一些实施例中，中继终端设备与第一目标设备之间的无线链路异常，可以包括下列中的至少一项：
中继终端设备与第一目标设备之间的无线链路连接或切换失败；
第一目标设备与中继终端设备之间的无线接口信号质量小于预设质量阈值；
中继终端设备所缓存的数据量大于或等于预定数量阈值；
中继终端设备与第一目标设备之间的无线链路连接失败判断定时器T310启动；
中继终端设备与第一目标设备之间的无线链路重建定时器T311启动。
具体地，当中继终端设备与第一目标设备之间的无线链路连接或切换失败，或者无线链路连接失败判断定时器T310启动，或者无线链路重建定时器T311启动时，说明中继终端设备与第一目标设备之间的无线连接 发生异常，因此，可以确定中继终端设备与第一目标设备之间的无线链路异常。当第一目标设备与中继终端设备之间的无线接口信号质量小于预设质量阈值时，说明中继终端设备与第一目标设备之间的通信信号质量较差，中继终端设备无法正常向第一目标设备传输数据。因此，可以确定中继终端设备与第一目标设备之间的无线链路异常。当中继终端设备所缓存的数据量大于或等于预定数量阈值时，说明中继终端设备内堆积的待转发数据过多，而中继终端设备内堆积的待转发数据过多的原因可以为中继终端设备无法正常向第一目标设备传输数据。因此，可以确定中继终端设备与第一目标设备之间的无线链路异常。
在本发明一些实施例中，无线接口信号指的是第一目标设备通过无线链路接口向中继终端设备发送的接口测试信号。其中，无线链路接口可以包括sidelink接口和Uu接口中的至少一种。
在本发明实施例中，可选地，确定无线接口信号质量的具体方法可以包括：
接收第一目标设备向中继终端设备发送的接口测试信号；
根据接收到的接口测试信号的信号强度和/或信号功率，确定无线接口信号质量。
在一些实施例中，第一目标设备每隔预定时间间隔就会向中继终端设备发送接口测试信号，中继终端设备能够确定第一目标设备所发送的第一目标设备的信号强度，作为无线接口信号质量。此时，预设质量阈值包括预设强度阈值，中继终端设备可以将所确定的信号强度与预设强度阈值进行比较，并在所确定的信号强度小于预设强度阈值的情况下，确定中继终端设备与第一目标设备之间的无线链路异常。
在另一些实施例中，第一目标设备每隔预定时间间隔就会向中继终端设备发送接口测试信号，中继终端设备能够确定第一目标设备所发送的第一目标设备的信号功率，作为无线接口信号质量。此时，预设质量阈值包括预设功率阈值，中继终端设备可以将所确定的信号功率与预设功率阈值进行比较，并在所确定的信号功率小于预设功率阈值的情况下，确定中继终端设备与第一目标设备之间的无线链路异常。
在又一些实施例中，第一目标设备每隔预定时间间隔就会向中继终端设备发送接口测试信号，中继终端设备还能够确定第一目标设备所发送的第一目标设备的信号强度和信号功率的加权和，作为无线接口信号质量。中继终端设备可以将所确定的加权和与预设功率阈值进行比较，并在所确定的加权和小于预设功率阈值的情况下，确定中继终端设备与第一目标设备之间的无线链路异常。
在本发明一些实施例中，第一目标设备可以为中继终端设备的上游节点设备，第二目标设备可以为中继终端设备的下游节点设备。
具体地，当中继终端设备与其上游节点设备之间的无线链路异常时，中继终端设备可以通知其下游节点设备降低向中继终端设备传输的数据传输流量或停止与中继终端设备之间的数据传输。
中继终端设备的下游节点设备可以为其它中继终端设备或者远端终端设备。远端终端设备可以为图1所示的远端UE 130，也可以为图2或图3所示的远端UE 240，这些设备与中继终端设备均是通过sidelink接口进行通信。因此，在这些实施例中，中继终端设备可以通过sidelink接口向第二目标设备发送第一通知信息。
在一些实施例中，第一通知信息可以通知第二目标设备减少向中继终端设备传输的数据量、或者降低向中继终端设备传输数据的传输速度、或者停止向中继终端设备传输数据或者触发第二目标设备的重选流程，以使第二目标设备降低向中继终端设备传输的数据传输流量或停止与中继终端设备之间的数据传输。
在这些实施例中，可选地，第一通知信息可以包括下列中的至少一项：
用于指示第二目标设备停止向中继终端设备的发送数据的通知信息，可以使第二目标设备在接收到第一通知信息后，响应于第一通知信息，停止向中继终端设备发送数据；
用于指示第二目标设备停止发送的数据类型的通知信息，可以使第二目标设备在接收到第一通知信息后，响应于第一通知信息，停止向中继终端设备发送该数据类型对应的数据；其中，数据类型包括传输资源、传输 载波、逻辑信道以及业务中的至少一个；
用于指示第二目标设备的停止发送时长的通知信息，可以使第二目标设备在接收到第一通知信息后，响应于第一通知信息，在停止发送时长内停止向中继终端设备发送数据；其中，停止发送时长用于指示第二目标设备停止发送的时长；
用于指示第二目标设备的待变更的数据传输速率的通知信息，可以使第二目标设备在接收到第一通知信息后，响应于第一通知信息，以该待变更的数据传输速率向中继终端设备发送数据；其中，待变更的数据传输速率用于指示降低后的数据传输速度；
用于指示第二目标设备进行传输资源重选的通知信息，可以使第二目标设备在接收到第一通知信息后，响应于第一通知信息，触发传输资源重选；
用于指示第二目标设备进行传输载波重选的通知信息，可以使第二目标设备在接收到第一通知信息后，响应于第一通知信息，触发传输载波重选；
用于指示第二目标设备进行中继终端设备重选的通知信息，可以使第二目标设备在接收到第一通知信息后，响应于第一通知信息，触发中继终端设备重选。
需要说明的是，在本发明实施例中，待变更的数据传输速率可以由中继终端设备根据中继终端设备与第一目标设备之间的无线链路异常程度确定，待变更的数据传输速率也可以为预设的数据传输速率，在此不做限定。
由此，可以在中继终端设备发现与其上游节点设备之间的无线链路通信不好时，直接通知其下游节点设备减少或停止通过sidelink接口向其发送数据，避免中继终端设备中的待转发数据无法及时转发，进而避免中继终端设备中的待转发数据堆积，从而避免待转发数据的丢失，提高了数据传输的可靠性。
在另一些实施例中，在第一目标设备为网络设备的情况下，第一目标设备还可以与第二目标设备通信连接。如图3所示，即中继终端设备的上 游节点设备还可以直接与中继终端设备的下游节点设备通信连接。
在这些实施例中，可选地，该数据传输方法还可以包括：
在中继终端设备与第一目标设备之间的无线链路异常的情况下，向第一目标设备发送第二通知信息。其中，第二通知信息用于表征中继终端设备与第一目标设备之间的无线链路异常，以及用于第一目标设备生成第三通知信息。第三通知信息用于第一目标设备向第二目标设备发送，以及用于使第二目标设备降低向中继终端设备传输的数据传输流量或使第二目标设备停止与中继终端设备之间的数据传输。
在中继终端设备与其上游节点设备之间的无线链路异常的情况下，如果在发送第一通知信息之前，中继终端设备与其下游节点设备之间还有很多数据要发，导致中继终端设备无法及时向其下游节点设备发送第一通知信息。此时，中继终端设备可以通过第二通知信息向其上游节点设备报告中继终端设备与其上游节点设备之间的无线链路异常，并通过其上游节点设备通知其下游节点设备降低向中继终端设备传输的数据传输流量或停止与中继终端设备之间的数据传输。
具体地，中继终端设备可以向其上游节点设备发送第二通知信息，以使该上游节点设备确定该中继终端设备与其之间的无线链路异常，从而使该上游节点设备响应于第二通知信息，在根据第二通知信息生成第三通知信息后，向中继终端设备的下游节点设备发送该第三通知信息，以通过第三通知信息通知该下游节点设备降低向该中继终端设备传输的数据传输流量或停止与该中继终端设备之间的数据传输。
中继终端设备的上游节点设备可以为其它中继终端设备或者网络设备。网络设备可以为图1所示的基站11，也可以为图2或图3所示的基站210。其它中继终端设备与中继终端设备的下游节点设备均是通过sidelink接口进行通信，网络设备与中继终端设备的下游节点设备通过Uu接口进行通信。
因此，在这些实施例中，第一目标设备可以通过sidelink接口或Uu接口向第二目标设备发送第三通知信息，中继终端设备可以通过sidelink接口或Uu接口向第一目标设备发送第二通知信息。
在一些实施例中，第三通知信息可以通知第二目标设备减少向中继终端设备传输的数据量、或者降低向中继终端设备传输数据的传输速度、或者停止向中继终端设备传输数据或者触发第二目标设备的重选流程，以使第二目标设备降低向中继终端设备传输的数据传输流量或停止与中继终端设备之间的数据传输。
在这些实施例中，可选地，第三通知信息可以包括下列中的至少一项：
用于指示第二目标设备停止向所述中继终端设备的发送数据的通知信息；
用于指示第二目标设备停止发送的数据类型的通知信息；
用于指示第二目标设备的停止发送时长的通知信息；
用于指示第二目标设备的待变更的数据传输速率的通知信息；
用于指示第二目标设备进行传输资源重选的通知信息；
用于指示第二目标设备进行传输载波重选的通知信息；
用于指示第二目标设备进行中继终端设备重选的通知信息；
用于指示第二目标设备的可选中继终端设备的通知信息。
其中，第三通知信息与第一通知信息相似的内容，在此不做赘述。
第三通知信息中用于指示第二目标设备的可选中继终端设备的通知信息，可以使第二目标设备确定其在中继终端设备重选时可以选择的中继终端设备。具体地，可选中继终端设备为第一目标设备向第二目标设备指定的可以进行重选的中继终端设备。
由此，可以在中继终端设备发现与其上游节点设备之间的无线链路通信不好时，通过其上游节点设备通知其下游节点设备减少或停止通过sidelink接口向其发送数据，避免中继终端设备中的待转发数据无法及时转发，进而避免中继终端设备中的待转发数据堆积，避免待转发数据的丢失，提高了数据传输的可靠性。
在本发明另一些实施例中，第一目标设备可以为中继终端设备的下游节点设备，第二目标设备可以为中继终端设备的上游节点设备。
具体地，当中继终端设备与其下游节点设备之间的无线链路异常时， 中继终端设备可以通知其上游节点设备降低向中继终端设备传输的数据传输流量或停止与中继终端设备之间的数据传输。
由于中继终端设备的上游节点设备可以为其它中继终端设备或者网络设备。网络设备可以为图1所示的基站110，也可以为图2或图3所示的基站210。其它中继终端设备与中继终端设备均是通过sidelink接口进行通信，网络设备与中继终端设备通过Uu接口进行通信。
因此，在这些实施例中，中继终端设备可以通过sidelink接口或Uu接口向第二目标设备发送第一通知信息。
在一些实施例中，第一通知信息可以通知第二目标设备减少向中继终端设备传输的数据量或者降低向中继终端设备传输数据的传输速度，以使第二目标设备降低向中继终端设备传输的数据传输流量或停止与中继终端设备之间的数据传输。
在这些实施例中，可选地，第一通知信息可以包括下列中的至少一项：
用于指示第二目标设备停止向中继终端设备发送数据的通知信息；
用于指示第二目标设备停止发送的数据类型的通知信息；
用于指示第二目标设备的停止发送时长的通知信息；
用于指示第二目标设备的待变更的数据传输速率的通知信息。
第一通知信息的上述内容已经在上文中进行说明，在此不做赘述。由此，可以在中继终端设备发现与其下游节点设备之间的无线链路通信不好时，直接通知其上游节点设备减少或停止通过sidelink接口向其发送数据，避免中继终端设备中的待转发数据无法及时转发，进而避免中继终端设备中的待转发数据堆积，避免待转发数据的丢失，提高了数据传输的可靠性。
综上所述，本发明实施例提供的数据传输方法，在中继终端设备确定其与第一目标设备之间的无线链路异常的情况下，合理的控制第二目标设备向其传输的数据传输流量，从而避免中继终端设备中的待转发数据无法及时转发，进而避免中继终端设备中的待转发数据堆积，避免待转发数据的丢失，提高了数据传输的可靠性。
图5示出了本发明提供的数据传输方法的另一实施例的流程示意图。
在本发明一些实施例中，图5所示的方法可以由第一目标设备执行，第一目标设备可以与第二目标设备通信连接，第一目标设备可以为中继终端设备的上游节点设备，第二目标设备可以为中继终端设备的下游节点设备。中继终端设备可以为单跳、双跳或者多跳sidelink传输***中的任一个用于在上游节点设备与下游节点设备之间起到数据转发功能的设备。例如，第一目标设备可以为图3中所示的基站210，中继终端设备可以为图3中所示的第一中继UE 220，第二目标设备可以为图3中所示的第二中继UE230。再例如，在图3中所示的第一中继UE 220与远端UE 240通信连接的情况下，第一目标设备可以为图3中所示的第一中继UE 220，中继终端设备可以为图3中所示的第二中继UE 230，第二目标设备可以为图3中所示的远端UE 240。
如图5所示，该数据传输方法可以包括：
S610、在中继终端设备与第一目标设备之间的无线链路异常的情况下，向第二目标设备发送第四通知信息。
第四通知信息用于使第二目标设备降低向中继终端设备传输的数据传输流量或使第二目标设备停止与中继终端设备之间的数据传输。
在本发明实施例中，第一目标设备能够在中继终端设备与第一目标设备之间的无线链路异常的情况下，直接向第二目标设备发送第四通知信息，使第二目标设备根据第四通知信息降低向中继终端设备传输的数据传输流量，或，使第二目标设备根据第四通知信息停止与中继终端设备之间的数据传输，使得第一目标设备能够控制第二目标设备向中继终端设备传输的数据传输流量，避免中继终端设备中的待转发数据无法及时转发，进而避免中继终端设备中的待转发数据堆积，避免待转发数据的丢失，提高了数据传输的可靠性。
在本发明一些实施例中，中继终端设备与第一目标设备之间的无线链路异常，可以包括下列中的至少一项：
中继终端设备与第一目标设备之间的无线链路连接或切换失败；
第一目标设备与中继终端设备之间的无线接口信号质量小于预设质量 阈值；
中继终端设备所缓存的数据量大于或等于预定数量阈值；
中继终端设备与第一目标设备之间的无线链路连接失败判断定时器T310启动；
中继终端设备与第一目标设备之间的无线链路重建定时器T311启动。
第一目标设备确定中继终端设备与第一目标设备之间的无线链路异常的方法与图4所示实施例中的方法相似，在此不做赘述。
在本发明一些实施例中，第四通知信息可以包括下列中的至少一项：
用于指示第二目标设备停止向中继终端设备的发送数据的通知信息；
用于指示第二目标设备停止发送的数据类型的通知信息；
用于指示第二目标设备的停止发送时长的通知信息；
用于指示第二目标设备的待变更的数据传输速率的通知信息；
用于指示第二目标设备进行传输资源重选的通知信息；
用于指示第二目标设备进行传输载波重选的通知信息；
用于指示第二目标设备进行中继终端设备重选的通知信息；
用于指示第二目标设备的可选中继终端设备的通知信息。
第四通知信息与图4所示实施例中的第三通知信息相似，在此不做赘述。
图6示出了本发明提供的中继终端设备的一实施例的结构示意图。
在本发明一些实施例中，图6所示的中继终端设备可以为单跳、双跳或者多跳sidelink传输***中的任一个用于在上游节点设备与下游节点设备之间起到数据转发功能的设备。例如，中继终端设备可以为图1中所示的中继UE 120。再例如，中继终端设备可以为图2或图3中所示的第一中继UE 220或者第二中继UE 230。
如图6所示，该中继终端设备400可以包括：
第一信息发送模块410，用于在中继终端设备与第一目标设备之间的无线链路异常的情况下，向第二目标设备发送第一通知信息。
第一通知信息用于使第二目标设备降低向中继终端设备传输的数据传 输流量或使第二目标设备停止与中继终端设备之间的数据传输。
在本发明实施例中，该中继终端设备能够在中继终端设备与第一目标设备之间的无线链路异常的情况下，直接向第二目标设备发送第一通知信息，使第二目标设备根据第一通知信息降低向中继终端设备传输的数据传输流量，或，使第二目标设备根据第一通知信息停止与中继终端设备之间的数据传输，使得中继终端设备能够控制第二目标设备向其传输的数据传输流量，避免中继终端设备中的待转发数据无法及时转发，进而避免中继终端设备中的待转发数据堆积，避免待转发数据的丢失，提高了数据传输的可靠性。
在本发明一些实施例中，中继终端设备与第一目标设备之间的无线链路异常，包括下列中的至少一项：
中继终端设备与第一目标设备之间的无线链路连接或切换失败；
第一目标设备与中继终端设备之间的无线接口信号质量小于预设质量阈值；
中继终端设备所缓存的数据量大于或等于预定数量阈值；
中继终端设备与第一目标设备之间的无线链路连接失败判断定时器启动；
中继终端设备与第一目标设备之间的无线链路重建定时器启动。
在本发明一些实施例中，第一目标设备为中继终端设备的上游节点设备，第二目标设备为中继终端设备的下游节点设备。
在本发明一些实施例中，第一通知信息包括下列中的至少一项：
用于指示第二目标设备停止向中继终端设备的发送数据的通知信息；
用于指示第二目标设备停止发送的数据类型的通知信息；
用于指示第二目标设备的停止发送时长的通知信息；
用于指示第二目标设备的待变更的数据传输速率的通知信息；
用于指示第二目标设备进行传输资源重选的通知信息；
用于指示第二目标设备进行传输载波重选的通知信息；
用于指示第二目标设备进行中继终端设备重选的通知信息。
在本发明一些实施例中，第一目标设备还可与第二目标设备通信连 接。
在这些实施例中，可选地，中继终端设备400还可包括：
第二信息发送模块，用于在无线链路异常的情况下，向第一目标设备发送第二通知信息。
第二通知信息用于表征无线链路异常，以及用于第一目标设备生成第三通知信息。第三通知信息用于第一目标设备向第二目标设备发送，以及用于使第二目标设备降低向中继终端设备传输的数据传输流量或使第二目标设备停止与中继终端设备之间的数据传输。
在本发明一些实施例中，第三通知信息包括下列中的至少一项：
用于指示第二目标设备停止向中继终端设备的发送数据的通知信息；
用于指示第二目标设备停止发送的数据类型的通知信息；
用于指示第二目标设备的停止发送时长的通知信息；
用于指示第二目标设备的待变更的数据传输速率的通知信息；
用于指示第二目标设备进行传输资源重选的通知信息；
用于指示第二目标设备进行传输载波重选的通知信息；
用于指示第二目标设备进行中继终端设备重选的通知信息；
用于指示第二目标设备的可选中继终端设备的通知信息。
在本发明一些实施例中，第一目标设备为中继终端设备的下游节点设备，第二目标设备为中继终端设备的上游节点设备。
在本发明一些实施例中，第一通知信息包括下列中的至少一项：
用于指示第二目标设备停止向中继终端设备发送数据的通知信息；
用于指示第二目标设备停止发送的数据类型的通知信息；
用于指示第二目标设备的停止发送时长的通知信息；
用于指示第二目标设备的待变更的数据传输速率的通知信息。
本发明实施例提供的中继终端设备400能够实现图4所示的方法实施例中中继终端设备实现的各个过程和效果，为避免重复，这里不再赘述。
图7示出了本发明提供的第一目标设备的一实施例的结构示意图。
在本发明一些实施例中，图7所示的第一目标设备700可以与第二目标设备通信连接，第一目标设备700可以为中继终端设备的上游节点设 备，第二目标设备可以为中继终端设备的下游节点设备。中继终端设备可以为单跳、双跳或者多跳sidelink传输***中的任一个用于在上游节点设备与下游节点设备之间起到数据转发功能的设备。例如，第一目标设备可以为图3中所示的基站210，中继终端设备可以为图3中所示的第一中继UE 220，第二目标设备可以为图3中所示的第二中继UE230。再例如，在图3中所示的第一中继UE 220与远端UE 240通信连接的情况下，第一目标设备可以为图3中所示的第一中继UE 220，中继终端设备可以为图3中所示的第二中继UE 230，第二目标设备可以为图3中所示的远端UE 240。
如图7所示，该第一目标设备700可以包括：
第三信息发送模块710，用于在中继终端设备与第一目标设备之间的无线链路异常的情况下，向第二目标设备发送第四通知信息。
第四通知信息用于使第二目标设备降低向中继终端设备传输的数据传输流量或使第二目标设备停止与中继终端设备之间的数据传输。
在本发明实施例中，第一目标设备能够在中继终端设备与第一目标设备之间的无线链路异常的情况下，直接向第二目标设备发送第四通知信息，使第二目标设备根据第四通知信息降低向中继终端设备传输的数据传输流量，或，使第二目标设备根据第四通知信息停止与中继终端设备之间的数据传输，使得第一目标设备能够控制第二目标设备向中继终端设备传输的数据传输流量，避免中继终端设备中的待转发数据无法及时转发，进而避免中继终端设备中的待转发数据堆积，避免待转发数据的丢失，提高了数据传输的可靠性。
在本发明一些实施例中，中继终端设备与第一目标设备之间的无线链路异常，可以包括下列中的至少一项：
中继终端设备与第一目标设备之间的无线链路连接或切换失败；
第一目标设备与中继终端设备之间的无线接口信号质量小于预设质量阈值；
中继终端设备所缓存的数据量大于或等于预定数量阈值；
中继终端设备与第一目标设备之间的无线链路连接失败判断定时器启 动；
中继终端设备与第一目标设备之间的无线链路重建定时器启动。
在本发明一些实施例中，第四通知信息可以包括下列中的至少一项：
用于指示第二目标设备停止向中继终端设备的发送数据的通知信息；
用于指示第二目标设备停止发送的数据类型的通知信息；
用于指示第二目标设备的停止发送时长的通知信息；
用于指示第二目标设备的待变更的数据传输速率的通知信息；
用于指示第二目标设备进行传输资源重选的通知信息；
用于指示第二目标设备进行传输载波重选的通知信息；
用于指示第二目标设备进行中继终端设备重选的通知信息；
用于指示第二目标设备的可选中继终端设备的通知信息。
本发明实施例提供的中继终端设备700能够实现图5的方法实施例中第一目标设备实现的各个过程和效果，为避免重复，这里不再赘述。
图8为本发明提供的中继终端设备的一实施例的硬件结构示意图。
如图8所示，该中继终端设备500包括但不限于：射频单元501、网络模块502、音频输出单元503、输入单元504、传感器505、显示单元506、用户输入单元507、接口单元508、存储器509、处理器510、以及电源511等部件。本领域技术人员可以理解，图8中示出的中继终端设备结构并不构成对中继终端设备的限定，中继终端设备可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
其中，处理器510，用于在中继终端设备与第一目标设备之间的无线链路异常的情况下，向第二目标设备发送第一通知信息；其中，第一通知信息用于使第二目标设备降低向中继终端设备传输的数据传输流量或使第二目标设备停止与中继终端设备之间的数据传输。
在本发明实施例中，能够在中继终端设备与第一目标设备之间的无线链路异常的情况下，直接向第二目标设备发送第一通知信息，使第二目标设备根据第一通知信息降低向中继终端设备传输的数据传输流量，或，使第二目标设备根据第一通知信息停止与中继终端设备之间的数据传输，使得中继终端设备能够控制第二目标设备向其传输的数据传输流量，避免中 继终端设备中的待转发数据无法及时转发，进而避免中继终端设备中的待转发数据堆积，避免待转发数据的丢失，提高了数据传输的可靠性。
应理解的是，本发明实施例中，射频单元501可用于收发信息或通话过程中，信号的接收和发送。具体的，将来自基站的下行数据接收后，给处理器510处理；另外，将上行的数据发送给基站。通常，射频单元501包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。此外，射频单元501还可以通过无线通信***与网络和其他设备通信。
中继终端设备通过网络模块502为用户提供了无线的宽带互联网访问，如帮助用户收发电子邮件、浏览网页和访问流式媒体等。
音频输出单元503可以将射频单元501或网络模块502接收的或者在存储器509中存储的音频数据转换成音频信号并且输出为声音。而且，音频输出单元503还可以提供与中继终端设备500执行的特定功能相关的音频输出(例如，呼叫信号接收声音、消息接收声音等等)。音频输出单元503包括扬声器、蜂鸣器以及受话器等。
输入单元504用于接收音频或视频信号。输入单元504可以包括图形处理器(Graphics Processing Unit，GPU)5041和麦克风5042，图形处理器5041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。处理后的图像帧可以显示在显示单元506上。经图形处理器5041处理后的图像帧可以存储在存储器509(或其它存储介质)中或者经由射频单元501或网络模块502进行发送。麦克风5042可以接收声音，并且能够将这样的声音处理为音频数据。处理后的音频数据可以在电话通话模式的情况下转换为可经由射频单元501发送到移动通信基站的格式输出。
中继终端设备500还包括至少一种传感器505，比如光传感器、运动传感器以及其他传感器。具体地，光传感器包括环境光传感器及接近传感器。其中，环境光传感器可根据环境光线的明暗来调节显示面板5061的亮度，接近传感器可在中继终端设备500移动到耳边时，关闭显示面板5061和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向 上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别中继终端设备姿态(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；传感器505还可以包括指纹传感器、压力传感器、虹膜传感器、分子传感器、陀螺仪、气压计、湿度计、温度计、红外线传感器等，在此不再赘述。
显示单元506用于显示由用户输入的信息或提供给用户的信息。显示单元506可包括显示面板5061，可以采用液晶显示器(Liquid Crystal Display，LCD)、有机发光二极管(Organic Light-Emitting Diode,OLED)等形式来配置显示面板5061。
用户输入单元507可用于接收输入的数字或字符信息，以及产生与中继终端设备的用户设置以及功能控制有关的键信号输入。具体地，用户输入单元507包括触控面板5071以及其他输入设备5072。触控面板5071，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板5071上或在触控面板5071附近的操作)。触控面板5071可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器510，接收处理器510发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板5071。除了触控面板5071，用户输入单元507还可以包括其他输入设备5072。具体地，其他输入设备5072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
进一步的，触控面板5071可覆盖在显示面板5061上，当触控面板5071检测到在其上或附近的触摸操作后，传送给处理器510以确定触摸事件的类型，随后处理器510根据触摸事件的类型在显示面板5061上提供相应的视觉输出。虽然在图8中，触控面板5071与显示面板5061是作为两个独立的部件来实现中继终端设备的输入和输出功能，但是在某些实施例中，可以将触控面板5071与显示面板5061集成而实现中继终端设备的 输入和输出功能，具体此处不做限定。
接口单元508为外部装置与中继终端设备500连接的接口。例如，外部装置可以包括有线或无线头戴式耳机端口、外部电源(或电池充电器)端口、有线或无线数据端口、存储卡端口、用于连接具有识别模块的装置的端口、音频输入/输出(I/O)端口、视频I/O端口、耳机端口等等。接口单元508可以用于接收来自外部装置的输入(例如，数据信息、电力等等)并且将接收到的输入传输到中继终端设备500内的一个或多个元件或者可以用于在中继终端设备500和外部装置之间传输数据。
存储器509可用于存储软件程序以及各种数据。存储器509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***、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据手机的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器509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。
处理器510是中继终端设备的控制中心，利用各种接口和线路连接整个中继终端设备的各个部分，通过运行或执行存储在存储器509内的软件程序和/或模块，以及调用存储在存储器509内的数据，执行中继终端设备的各种功能和处理数据，从而对中继终端设备进行整体监控。处理器510可包括一个或多个处理单元；优选的，处理器510可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作***、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器510中。
中继终端设备500还可以包括给各个部件供电的电源511(比如电池)，优选的，电源511可以通过电源管理***与处理器510逻辑相连，从而通过电源管理***实现管理充电、放电、以及功耗管理等功能。
另外，中继终端设备500包括一些未示出的功能模块，在此不再赘述。
优选的，本发明实施例还提供一种中继终端设备，包括处理器510， 存储器509，存储在存储器509上并可在所述处理器510上运行的计算机程序，该计算机程序被处理器510执行时实现上述数据传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
优选的，本发明实施例还提供一种第一目标设备，第一目标设备与第二目标设备通信连接，第一目标设备为中继终端设备的上游节点设备，第二目标设备为中继终端设备的下游节点设备，包括处理器、存储器及存储在存储器上并可在处理器上运行的计算机程序，计算机程序被处理器执行时实现上述数据传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本发明实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现上述数据传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质可包括非暂态计算机可读存储介质，如只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的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(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本发明各个实施例所述的方法。
上面参考根据本申请的实施例的方法、装置(***)和机器程序产品的流程图和/或框图描述了本申请的各方面。应当理解，流程图和/或框图中的每个方框以及流程图和/或框图中各方框的组合可以由程序或指令实现。这些程序或指令可被提供给通用计算机、专用计算机、或其它可编程数据处理装置的处理器，以产生一种机器，使得经由计算机或其它可编程数据处理装置的处理器执行的这些程序或指令使能对流程图和/或框图的一个或多个方框中指定的功能/动作的实现。这种处理器可以是但不限于是通用处理器、专用处理器、特殊应用处理器或者现场可编程逻辑电路。还可理解，框图和/或流程图中的每个方框以及框图和/或流程图中的方框的组合，也可以由执行指定的功能或动作的专用硬件来实现，或可由专用硬件和计算机指令的组合来实现。
上面结合附图对本发明的实施例进行了描述，但是本发明并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本发明的启示下，在不脱离本发明宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本发明的保护之内。

Claims (25)

  1. 一种数据传输方法，应用于中继终端设备，所述方法包括：
    在所述中继终端设备与第一目标设备之间的无线链路异常的情况下，向第二目标设备发送第一通知信息；其中，所述第一通知信息用于使所述第二目标设备降低向所述中继终端设备传输的数据传输流量或使所述第二目标设备停止与所述中继终端设备之间的数据传输。
  2. 根据权利要求1所述的方法，其中，所述中继终端设备与第一目标设备之间的无线链路异常，包括下列中的至少一项：
    所述中继终端设备与所述第一目标设备之间的无线链路连接或切换失败；
    所述第一目标设备与所述中继终端设备之间的无线接口信号质量小于预设质量阈值；
    所述中继终端设备所缓存的数据量大于或等于预定数量阈值；
    所述中继终端设备与所述第一目标设备之间的无线链路连接失败判断定时器启动；
    所述中继终端设备与所述第一目标设备之间的无线链路重建定时器启动。
  3. 根据权利要求1所述的方法，其中，所述第一目标设备为所述中继终端设备的上游节点设备，所述第二目标设备为所述中继终端设备的下游节点设备。
  4. 根据权利要求3所述的方法，其中，所述第一通知信息包括下列中的至少一项：
    用于指示所述第二目标设备停止向所述中继终端设备的发送数据的通知信息；
    用于指示所述第二目标设备停止发送的数据类型的通知信息；
    用于指示所述第二目标设备的停止发送时长的通知信息；
    用于指示所述第二目标设备的待变更的数据传输速率的通知信息；
    用于指示所述第二目标设备进行传输资源重选的通知信息；
    用于指示所述第二目标设备进行传输载波重选的通知信息；
    用于指示所述第二目标设备进行中继终端设备重选的通知信息。
  5. 根据权利要求3所述的方法，其中，所述第一目标设备还与所述第二目标设备通信连接；
    其中，所述方法还包括：
    在所述无线链路异常的情况下，向所述第一目标设备发送第二通知信息；其中，所述第二通知信息用于表征所述无线链路异常，以及用于所述第一目标设备生成第三通知信息，所述第三通知信息用于所述第一目标设备向所述第二目标设备发送，以及用于使所述第二目标设备降低向所述中继终端设备传输的数据传输流量或使所述第二目标设备停止与所述中继终端设备之间的数据传输。
  6. 根据权利要求5所述的方法，其中，所述第三通知信息包括下列中的至少一项：
    用于指示所述第二目标设备停止向所述中继终端设备的发送数据的通知信息；
    用于指示所述第二目标设备停止发送的数据类型的通知信息；
    用于指示所述第二目标设备的停止发送时长的通知信息；
    用于指示所述第二目标设备的待变更的数据传输速率的通知信息；
    用于指示所述第二目标设备进行传输资源重选的通知信息；
    用于指示所述第二目标设备进行传输载波重选的通知信息；
    用于指示所述第二目标设备进行中继终端设备重选的通知信息；
    用于指示所述第二目标设备的可选中继终端设备的通知信息。
  7. 根据权利要求1所述的方法，其中，所述第一目标设备为所述中继终端设备的下游节点设备，所述第二目标设备为所述中继终端设备的上游节点设备。
  8. 根据权利要求7所述的方法，其中，所述第一通知信息包括下列中的至少一项：
    用于指示所述第二目标设备停止向所述中继终端设备发送数据的通知信息；
    用于指示所述第二目标设备停止发送的数据类型的通知信息；
    用于指示所述第二目标设备的停止发送时长的通知信息；
    用于指示所述第二目标设备的待变更的数据传输速率的通知信息。
  9. 一种数据传输方法，应用于第一目标设备，所述第一目标设备与第二目标设备通信连接，所述第一目标设备为中继终端设备的上游节点设备，所述第二目标设备为中继终端设备的下游节点设备，所述方法包括：
    在所述中继终端设备与所述第一目标设备之间的无线链路异常的情况下，向所述第二目标设备发送第四通知信息；其中，所述第四通知信息用于使所述第二目标设备降低向所述中继终端设备传输的数据传输流量或使所述第二目标设备停止与所述中继终端设备之间的数据传输。
  10. 根据权利要求9所述的方法，其中，所述中继终端设备与所述第一目标设备之间的无线链路异常，包括下列中的至少一项：
    所述中继终端设备与所述第一目标设备之间的无线链路连接或切换失败；
    所述第一目标设备与所述中继终端设备之间的无线接口信号质量小于预设质量阈值；
    所述中继终端设备所缓存的数据量大于或等于预定数量阈值；
    所述中继终端设备与所述第一目标设备之间的无线链路连接失败判断定时器启动；
    所述中继终端设备与所述第一目标设备之间的无线链路重建定时器启动。
  11. 根据权利要求9所述的方法，其中，所述第四通知信息包括下列中的至少一项：
    用于指示所述第二目标设备停止向所述中继终端设备的发送数据的通知信息；
    用于指示所述第二目标设备停止发送的数据类型的通知信息；
    用于指示所述第二目标设备的停止发送时长的通知信息；
    用于指示所述第二目标设备的待变更的数据传输速率的通知信息；
    用于指示所述第二目标设备进行传输资源重选的通知信息；
    用于指示所述第二目标设备进行传输载波重选的通知信息；
    用于指示所述第二目标设备进行中继终端设备重选的通知信息；
    用于指示所述第二目标设备的可选中继终端设备的通知信息。
  12. 一种中继终端设备，包括：
    第一信息发送模块，用于在所述中继终端设备与第一目标设备之间的无线链路异常的情况下，向第二目标设备发送第一通知信息；其中，所述第一通知信息用于使所述第二目标设备降低向所述中继终端设备传输的数据传输流量或使所述第二目标设备停止与所述中继终端设备之间的数据传输。
  13. 根据权利要求12所述的中继终端设备，其中，所述中继终端设备与第一目标设备之间的无线链路异常，包括下列中的至少一项：
    所述中继终端设备与所述第一目标设备之间的无线链路连接或切换失败；
    所述第一目标设备与所述中继终端设备之间的无线接口信号质量小于预设质量阈值；
    所述中继终端设备所缓存的数据量大于或等于预定数量阈值；
    所述中继终端设备与所述第一目标设备之间的无线链路连接失败判断定时器启动；
    所述中继终端设备与所述第一目标设备之间的无线链路重建定时器启动。
  14. 根据权利要求12所述的中继终端设备，其中，所述第一目标设备为所述中继终端设备的上游节点设备，所述第二目标设备为所述中继终端设备的下游节点设备。
  15. 根据权利要求14所述的中继终端设备，其中，所述第一通知信息包括下列中的至少一项：
    用于指示所述第二目标设备停止向所述中继终端设备的发送数据的通知信息；
    用于指示所述第二目标设备停止发送的数据类型的通知信息；
    用于指示所述第二目标设备的停止发送时长的通知信息；
    用于指示所述第二目标设备的待变更的数据传输速率的通知信息；
    用于指示所述第二目标设备进行传输资源重选的通知信息；
    用于指示所述第二目标设备进行传输载波重选的通知信息；
    用于指示所述第二目标设备进行中继终端设备重选的通知信息。
  16. 根据权利要求14所述的中继终端设备，其中，所述第一目标设备还与所述第二目标设备通信连接；
    其中，所述中继终端设备还包括：
    第二信息发送模块，用于在所述无线链路异常的情况下，向所述第一目标设备发送第二通知信息；其中，所述第二通知信息用于表征所述无线链路异常，以及用于所述第一目标设备生成第三通知信息，所述第三通知信息用于所述第一目标设备向所述第二目标设备发送，以及用于使所述第二目标设备降低向所述中继终端设备传输的数据传输流量或使所述第二目标设备停止与所述中继终端设备之间的数据传输。
  17. 根据权利要求16所述的中继终端设备，其中，所述第三通知信息包括下列中的至少一项：
    用于指示所述第二目标设备停止向所述中继终端设备的发送数据的通知信息；
    用于指示所述第二目标设备停止发送的数据类型的通知信息；
    用于指示所述第二目标设备的停止发送时长的通知信息；
    用于指示所述第二目标设备的待变更的数据传输速率的通知信息；
    用于指示所述第二目标设备进行传输资源重选的通知信息；
    用于指示所述第二目标设备进行传输载波重选的通知信息；
    用于指示所述第二目标设备进行中继终端设备重选的通知信息；
    用于指示所述第二目标设备的可选中继终端设备的通知信息。
  18. 根据权利要求12所述的中继终端设备，其中，所述第一目标设备为所述中继终端设备的下游节点设备，所述第二目标设备为所述中继终端设备的上游节点设备。
  19. 根据权利要求18所述的中继终端设备，其中，所述第一通知信息包括下列中的至少一项：
    用于指示所述第二目标设备停止向所述中继终端设备发送数据的通知信息；
    用于指示所述第二目标设备停止发送的数据类型的通知信息；
    用于指示所述第二目标设备的停止发送时长的通知信息；
    用于指示所述第二目标设备的待变更的数据传输速率的通知信息。
  20. 一种第一目标设备，所述第一目标设备与第二目标设备通信连接，所述第一目标设备为中继终端设备的上游节点设备，所述第二目标设备为中继终端设备的下游节点设备，所述第一目标设备包括：
    第三信息发送模块，用于在所述中继终端设备与所述第一目标设备之间的无线链路异常的情况下，向所述第二目标设备发送第四通知信息；其中，所述第四通知信息用于使所述第二目标设备降低向所述中继终端设备传输的数据传输流量或使所述第二目标设备停止与所述中继终端设备之间的数据传输。
  21. 根据权利要求20所述的第一目标设备，其中，所述中继终端设备与所述第一目标设备之间的无线链路异常，包括下列中的至少一项：
    所述中继终端设备与所述第一目标设备之间的无线链路连接或切换失败；
    所述第一目标设备与所述中继终端设备之间的无线接口信号质量小于预设质量阈值；
    所述中继终端设备所缓存的数据量大于或等于预定数量阈值；
    所述中继终端设备与所述第一目标设备之间的无线链路连接失败判断定时器启动；
    所述中继终端设备与所述第一目标设备之间的无线链路重建定时器启动。
  22. 根据权利要求20所述的第一目标设备，其中，所述第四通知信息包括下列中的至少一项：
    用于指示所述第二目标设备停止向所述中继终端设备的发送数据的通知信息；
    用于指示所述第二目标设备停止发送的数据类型的通知信息；
    用于指示所述第二目标设备的停止发送时长的通知信息；
    用于指示所述第二目标设备的待变更的数据传输速率的通知信息；
    用于指示所述第二目标设备进行传输资源重选的通知信息；
    用于指示所述第二目标设备进行传输载波重选的通知信息；
    用于指示所述第二目标设备进行中继终端设备重选的通知信息；
    用于指示所述第二目标设备的可选中继终端设备的通知信息。
  23. 一种中继终端设备，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1至8中任一项所述的数据传输方法的步骤。
  24. 一种第一目标设备，所述第一目标设备与第二目标设备通信连接，所述第一目标设备为中继终端设备的上游节点设备，所述第二目标设备为中继终端设备的下游节点设备，所述第一目标设备包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求9至11中任一项所述的数据传输方法的步骤。
  25. 一种计算机可读存储介质，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现如权利要求1至8中任一项所述的数据传输方法或如权利要求9至11中任一项所述的数据传输方法的步骤。
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