WO2024164745A1 - 一种数据传输方法及装置 - Google Patents

一种数据传输方法及装置 Download PDF

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Publication number
WO2024164745A1
WO2024164745A1 PCT/CN2023/141706 CN2023141706W WO2024164745A1 WO 2024164745 A1 WO2024164745 A1 WO 2024164745A1 CN 2023141706 W CN2023141706 W CN 2023141706W WO 2024164745 A1 WO2024164745 A1 WO 2024164745A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
network device
cell
connection failure
information
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Ceased
Application number
PCT/CN2023/141706
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English (en)
French (fr)
Inventor
李�杰
彭文杰
耿婷婷
曾清海
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP23920934.9A priority Critical patent/EP4622344A4/en
Publication of WO2024164745A1 publication Critical patent/WO2024164745A1/zh
Priority to US19/269,021 priority patent/US20250344275A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/328—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by altitude
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
    • 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
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/322—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by location data
    • 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
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/326—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by proximity to another entity
    • 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

Definitions

  • the embodiments of the present application relate to the field of communications, and in particular, to a data transmission method and device.
  • the fifth generation (5G) communication system has great advantages, such as providing larger wireless bandwidth, more and higher quality broadband applications, etc.
  • 5G operators must choose efficient and low-cost ways to maintain operations, so the 3rd Generation Partnership Project (3GPP) proposed the concept of self-organizing network (SON).
  • 3GPP 3rd Generation Partnership Project
  • the network can analyze the data in the network and complete the corresponding network configuration and optimization independently.
  • SON includes three parts: self-configuration, self-optimization, and cell failure detection and optimization.
  • the present application provides a data transmission method and apparatus, which can help network equipment to optimize the network for mobility-related issues in a scenario where a terminal device has a moving speed in a vertical direction.
  • a data transmission method which can be executed by a terminal device, or by a component of the terminal device, such as a processor, a chip, or a chip system of the terminal device, or by a logic module or software that can implement all or part of the functions of the terminal device.
  • the method includes: determining first information, the first information indicating that a connection failure occurred during the movement of the terminal device, and the terminal device has a moving speed in the vertical direction during the movement; sending the first information to a first network device, the first network device being a network device to which the terminal device reconnects after the connection failure occurs.
  • the terminal device can send the first information to the first network device, so that the first network device can know that the terminal device has a moving speed in the vertical direction and that a connection failure occurred during the movement, thereby enabling the first network device to send information related to the connection failure scenario to the network device to which the terminal device was connected before the connection failure occurred, thereby helping the network device to which the terminal device was connected before the connection failure occurred to optimize the network for the scenario.
  • a data transmission method is provided, which can be executed by a first network device, or by a component of the first network device, such as a processor, chip, or chip system of the first network device, or by a logic module or software that can realize all or part of the functions of the first network device.
  • the method includes: receiving first information from a terminal device, the first information indicating that a connection failure occurred in the terminal device during movement, and the terminal device has a moving speed in the vertical direction during movement; sending second information to a second network device, the second information including the position of the first network device relative to the second network device, the first signal coverage area of the first network device in the vertical direction, the signal strength of the second cell in the second time period, and at least one of the first information; wherein the second network device is the network device to which the terminal device is connected before the connection failure occurs; when the connection failure occurs, the terminal device is located in the first signal coverage area, the second cell is the service cell to which the terminal device reconnects after the connection failure occurs, and the second time period includes the moment when the terminal device connects to the second cell.
  • the first network device receives the first information from the terminal device and can learn that the terminal device has a moving speed in the vertical direction and a connection failure occurs during the movement, thereby sending the second information related to the connection failure scenario to the second network device, such as the relative position information of the network device to which the terminal device is connected before and after the connection failure, the signal coverage area where the terminal device is located when the connection failure occurs, the signal strength of the service cell before the connection failure occurs, and at least one item of the first information, so as to help the second network device optimize the network for this scenario.
  • the second information related to the connection failure scenario such as the relative position information of the network device to which the terminal device is connected before and after the connection failure, the signal coverage area where the terminal device is located when the connection failure occurs, the signal strength of the service cell before the connection failure occurs, and at least one item of the first information, so as to help the second network device optimize the network for this scenario.
  • a data transmission method is provided, which can be executed by a second network device, or by a component of the second network device, such as a processor, chip, or chip system of the second network device, or by a logic module or software that can realize all or part of the functions of the second network device.
  • the method includes: receiving second information from a first network device, the first network device is a network device to which the terminal device reconnects after a connection failure occurs; the second network device is a network device to which the terminal device connects before the connection failure occurs; processing according to the second information; wherein the second information includes the position of the first network device relative to the second network device, the first signal coverage area of the first network device in the vertical direction, the signal strength of the second cell in the second time period, and at least one of the first information; wherein the terminal device is located in the first signal coverage area when the connection failure occurs, the second cell is the service cell to which the terminal device reconnects after the connection failure occurs, and the second time period includes the moment when the terminal device connects to the second cell.
  • the second network device can receive second information related to the connection failure scenario from the first network device, such as the relative position information of the network device to which the terminal device is connected before and after the connection failure, the signal coverage area where the terminal device is located when the connection failure occurs, the signal strength of the service cell before the connection failure occurs, and at least one of the first information indicating that a connection failure has occurred in the terminal device during movement and that the terminal device has a moving speed in the vertical direction during movement.
  • the first network optimization for mobility-related issues can be performed based on the second information.
  • the first information includes at least one of the location information, moving speed and altitude information of the terminal device when the connection failure occurs.
  • the location information includes the position of the terminal device relative to a second network device, where the second network device is the network device to which the terminal device is connected before the connection failure occurs; or, the location information includes the coordinates of the terminal device in a latitude and longitude coordinate system.
  • the height information includes the height of the terminal device relative to the second network device, or the height information includes the absolute height of the terminal device.
  • the first information includes a movement trajectory of the terminal device.
  • the second network device can analyze whether the connection failure occurs because the terminal device moves to an area where no signal is provided based on the movement trajectory of the terminal device. In the case of a connection failure caused by the terminal device moving to an area where no signal is provided, the second network device can optimize the network according to the cause; in the case of a connection failure not caused by the terminal device moving to an area where no signal is provided, the second network device can exclude the case where the connection failure occurs because the terminal device moves to an area where no signal is provided, so as to increase the probability of the second network device obtaining the correct cause of the connection failure, thereby enabling the second network device to optimize the network according to the correct cause.
  • the first information includes a switching type of the last switching of the terminal device, wherein the switching type is a vertical switching.
  • the second network device determines according to the switching type that the scenario in which the terminal device fails to connect during movement is that the terminal device has a moving speed in the vertical direction during movement. For example, the terminal device moves in the vertical direction. Then, network optimization can be performed according to this scenario to achieve network optimization for the scenario in which the terminal device fails to connect during movement with a moving speed in the vertical direction.
  • the first information includes the signal quality of the first cell in a first time period
  • the first cell is the service cell of the terminal device before the connection failure occurs
  • the end time of the first time period is the time when the connection failure occurs.
  • the second network device can analyze whether the connection failure occurs due to the deterioration of signal quality according to the signal quality of the first cell in the first time period.
  • the second network device can optimize the network according to the signal quality of the first cell in the first time period. For example, the second network device can improve the signal quality of the first cell to ensure normal communication between the subsequent terminal device and the second network device to avoid connection failure.
  • the first information includes an identifier of a cell in a neighboring cell of the first cell that meets a preset condition.
  • the first information includes a triggering cell list
  • the triggering cell list includes identifiers of cells that meet preset conditions.
  • the second network device can analyze whether the connection failure occurs because the terminal device does not trigger the report based on the first number and the preset number threshold.
  • the second network device can optimize the network according to the reason why the terminal device does not trigger the report; for example, the second network device can reduce the threshold for the terminal device to trigger the report (such as reducing the preset number threshold, reducing the duration of TTT, etc.) to increase the frequency of the terminal device sending reports, thereby enabling the terminal device to report the measurement results in advance, thereby avoiding the terminal device from failing to connect.
  • the second network device can exclude the reason why the terminal device did not trigger the report, so as to increase the probability of the second network device obtaining the correct reason for the connection failure, so that the second network device can optimize the network according to the correct reason.
  • a communication device for implementing various methods.
  • the communication device may be the terminal device in the first aspect, or a device included in the terminal device, such as a chip or a chip system; or, the communication device may be the first network device in the second aspect, or a device included in the first network device, such as a chip or a chip system; or, the communication device may be the second network device in the third aspect, or a device included in the second network device, such as a chip or a chip system.
  • the communication device includes a module, unit, or means corresponding to the implementation method, and the module, unit, or means may be implemented by hardware, software, or hardware execution.
  • the hardware or software includes one or more modules or units corresponding to the functions.
  • the communication device may include a processing module and a transceiver module.
  • the processing module may be used to implement the processing function in any of the above aspects and any possible implementations thereof.
  • the transceiver module may include a receiving module and a sending module, respectively used to implement the receiving function and the sending function in any of the above aspects and any possible implementations thereof.
  • the transceiver module may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.
  • a communication device comprising: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device executes the method described in any aspect.
  • the communication device can be the terminal device in the first aspect, or a device included in the terminal device, such as a chip or a chip system; or, the communication device can be the first network device in the second aspect, or a device included in the first network device, such as a chip or a chip system; or, the communication device can be the second network device in the third aspect, or a device included in the second network device, such as a chip or a chip system.
  • a communication device comprising: a processor and a communication interface; the communication interface is used to communicate with a module outside the communication device; the processor is used to execute a computer program or instruction so that the communication device executes the method described in any aspect.
  • the communication device can be the terminal device in the first aspect, or a device included in the terminal device, such as a chip or a chip system; or, the communication device can be the first network device in the second aspect, or a device included in the first network device, such as a chip or a chip system; or, the communication device can be the second network device in the third aspect, or a device included in the second network device, such as a chip or a chip system.
  • a communication device comprising: at least one processor; the processor is used to execute a computer program or instruction stored in a memory so that the communication device performs the method described in any aspect.
  • the memory may be coupled to the processor, or may be independent of the processor.
  • the communication device may be the terminal device in the first aspect, or a device included in the terminal device, such as a chip or a chip system; or the communication device may be the first network device in the second aspect, or a device included in the first network device, such as a chip or a chip system.
  • the communication device includes a memory for storing necessary program instructions and data.
  • the device when it is a chip system, it can be composed of a chip or include a chip and other discrete devices.
  • the sending action/function of the communication device can be understood as outputting or sending information
  • the receiving action/function of the communication device can be understood as inputting or receiving information
  • a computer-readable storage medium in which a computer program or instruction is stored, and when the computer-readable storage medium is run on a communication device or a computer, the communication device or the computer can execute the method described in any one of the aspects.
  • a computer program product comprising instructions, which, when executed on a communication device or a computer, enables the communication device or the computer to execute the method described in any one of the aspects.
  • the technical effects brought about by any design method in the fourth to ninth aspects can refer to the technical effects brought about by different design methods in the first, second or third aspects, and will not be repeated here.
  • FIG1 is a schematic diagram of a cell switching process provided by the present application.
  • FIG2 is a schematic diagram of a switching failure recovery mechanism provided by the present application.
  • FIG3 is a schematic diagram of a signal coverage area of a network device provided by the present application.
  • FIG4 is a schematic diagram of the structure of a communication system provided by the present application.
  • FIG5 is a schematic diagram of the structure of a communication device provided by the present application.
  • FIG6 is a schematic diagram of a flow chart of a data transmission method provided by the present application.
  • FIG7 is a schematic diagram of a signal coverage area of another network device provided by the present application.
  • FIG8 is a schematic diagram of a first signal coverage area provided by the present application.
  • FIG9 is a schematic diagram of another first signal coverage area provided by the present application.
  • FIG10 is a schematic diagram of the structure of another communication device provided by the present application.
  • FIG11 is a schematic diagram of the structure of another communication device provided in the present application.
  • plural means two or more than two.
  • at least one item of a, b, or c can be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or plural.
  • words such as “first” and “second” are used to distinguish the same items or similar items with substantially the same functions and effects. Those skilled in the art can understand that words such as “first” and “second” do not limit the quantity and execution order, and words such as “first” and “second” do not necessarily limit them to be different.
  • words such as “exemplary” or “for example” are used to indicate examples, illustrations or descriptions. Any embodiment or design described as “exemplary” or “for example” in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as “exemplary” or “for example” is intended to present related concepts in a concrete way for easy understanding.
  • the cell switching process may include steps S101-S109 as shown in FIG1 :
  • Step S101 The source base station of the terminal device (also referred to as the serving base station before the handover) may send a measurement configuration to the terminal device.
  • the terminal device receives the measurement configuration from the source base station.
  • the measurement configuration may include a measurement object (such as a serving cell or a neighboring cell), a triggering event for measurement reporting, and the like.
  • a measurement object such as a serving cell or a neighboring cell
  • a triggering event for measurement reporting and the like.
  • the triggering event may include event A1, event A2, event A3, event A4, event A5, etc.
  • event A1 is that the signal quality of the serving cell is greater than the first preset threshold
  • event A2 is that the signal quality of the serving cell is less than the second preset threshold
  • event A3 is that the signal quality of the neighboring cell is greater than the signal quality of the serving cell
  • event A4 is that the signal quality of the neighboring cell is greater than the third preset threshold
  • event A5 is that the signal quality of the serving cell is less than the second preset threshold, and the signal quality of the neighboring cell is greater than the third preset threshold.
  • Step S102 The terminal device measures the measurement object according to the received measurement configuration.
  • the terminal device will be triggered to report.
  • the identifier of the cell can be added to the triggered cell list (cells triggered list).
  • the certain time period is configured by the source base station.
  • the certain time period may also be referred to as a trigger time (time to trigger, TTT).
  • the measurement result is measured by layer 1 (such as the physical (PHY) layer) and obtained after filtering by layer 3 (such as the radio resource control (RRC) layer).
  • layer 1 such as the physical (PHY) layer
  • RRC radio resource control
  • Step S103 The terminal device sends a measurement report to the source base station.
  • the source base station receives the measurement report from the terminal device.
  • Step S104 After receiving the measurement report, the source base station determines the target cell based on the measurement report.
  • the source base station evaluates the measurement results in the measurement report and then determines the target cell.
  • Step S105 The source base station sends a handover request to the target base station to which the target cell belongs.
  • the target base station receives the handover request from the source base station.
  • the handover request includes information required for handover such as an identity (ID) of a target cell.
  • ID an identity of a target cell.
  • Step S106 The target base station performs admission control.
  • admission control can be understood as determining whether the terminal device is supported to access the target base station.
  • Step S107 The target base station sends a handover confirmation message to the source base station.
  • the source base station receives the handover confirmation message from the target base station.
  • the handover confirmation information includes RRC reconfiguration information related to the target cell (such as the ID of the target cell, etc.).
  • Step S108 The source base station forwards the handover confirmation information to the terminal device.
  • the terminal device receives the handover confirmation information from the source base station.
  • Step S109 The terminal device performs switching according to the switching confirmation information.
  • the terminal device may perform RRC reconfiguration according to the RRC reconfiguration information. After the RRC reconfiguration is completed, the terminal device sends information indicating that the RRC reconfiguration is successful to the target base station. Correspondingly, the target base station receives the information indicating that the RRC reconfiguration is successful from the terminal device. At this point, it can be considered that the handover of the terminal device on the radio access network (RAN) side is successful.
  • RAN radio access network
  • the switching in this application generally refers to the switching of network device control and terminal device control in the RRC connection state, cell change, etc.
  • UAV As a new type of aircraft, UAV has become popular due to its flexible and convenient features. At the same time, cellular networks can provide UAV with wide coverage, high reliability, high security, continuous mobility and other support features.
  • UAV The communication environment of UAV is quite different from that of traditional terminal devices (such as mobile phones).
  • UAV is usually located above the network equipment and mainly communicates in line of sight (LOS). Therefore, compared with traditional terminal devices, UAV can receive more signals from network devices.
  • LOS line of sight
  • the network equipment since the network equipment transmits electromagnetic waves toward the ground, the signals received by UAV are usually electromagnetic waves reflected from the ground or side lobes of the beam. Therefore, the strength of the signal received by UAV is less than that of the signal received by traditional terminal devices.
  • the long term evolution (LTE) system and the 5G system have enhanced the cell switching of UAV as follows: during the cell switching process, if the measurement result of a neighboring cell measured by the UAV within the TTT meets the triggering event of the measurement report, the identifier of the cell is added to the triggering cell list, and when the number of cell identifiers in the triggering cell list meets the preset number threshold, the UAV is triggered to report.
  • the connection failure recovery mechanism refers to re-establishing the RRC connection (or performing RRC re-establishment) when a connection failure occurs in a terminal device. That is, the RRC connection between the terminal device and the network device is re-established, and then the service connection of the terminal device is restored.
  • the connection failure may include radio link failure (RLF), handover failure, etc.
  • SON refers to the ability of the network to analyze data in the network and independently complete the corresponding network configuration and optimization.
  • SON includes three functions: self-configuration, self-optimization, and monitoring and optimization of cell failures.
  • the self-configuration function can include interface self-configuration function and automatic update of neighboring cells.
  • the self-optimization function can include mobility robustness optimization (MRO), mobility complex balancing, random access optimization, and physical cell identifier (PCI) conflict detection and optimization.
  • MRO mobility robustness optimization
  • PCI physical cell identifier
  • MRO can be used to detect and correct the following problems:
  • Connection failure due to late switching within the LTE system or the NR system; connection failure due to late switching between radio access technologies (RAT); unnecessary switching between RATs; ping-pong switching between RATs; ping-pong switching within the system, etc.
  • RAT radio access technologies
  • the terminal device when RLF occurs between the terminal device and the network device 1, the terminal device generates an RLF report and re-establishes the RRC connection ( FIG2 takes the establishment of the connection between the terminal device and the network device 2 as an example).
  • the terminal device After establishing the RRC connection with the network device 2, the terminal device sends the RLF report to the network device 2, the network device 2 receives the RLF report from the terminal device, generates RLF indication information, and sends the RLF indication information to the network device 1.
  • the RLF report may include at least one of the following: the cell global identifier (cell global identifier, CGI) (or the PCI and frequency of the cell), the CGI of the cell where the terminal device attempts to re-establish RRC, the CGI of the cell where the terminal device is located when the last handover is initialized, the duration from the last handover initialization of the terminal device to the occurrence of a connection failure, indicating that the cause of the connection failure is RLF or a handover failure, the cell radio network temporary identifier (C-RNTI) allocated by the last serving cell to the terminal device, the RLF trigger of the last RLF detected by the terminal device, the duration from the connection failure to the terminal device sending an RLF report, and wireless measurement quantities.
  • CGI cell global identifier
  • the RLF indication information may include at least one of the following: the PCI of the cell to which the terminal device was connected before the RLF occurred, the CGI of the cell in which the terminal device attempted to re-establish RRC, the C-RNTI of the terminal device in the cell before the RLF occurred, a short media access control-identifier (short MAC-I), an RLF report, and the reason for RRC re-establishment.
  • the area between point A and point C in the vertical direction is the signal coverage area of network device 1
  • the area between point B and point D in the vertical direction is the signal coverage area of network device 2.
  • Network device 1 provides services for the UAV when it moves from point A to point B. Although the UAV can receive signals from network device 1 and network device 2 at the same time when it moves from point B to point C, since the signal quality of network device 1 has not decreased, network device 1 still provides services for the UAV when it moves from point B to point C.
  • the signal quality of network device 1 suddenly decreases because the location of the UAV exceeds the signal coverage area of network device 1 at this time.
  • the terminal device fails to report the measurement result in advance, so that network device 1 cannot determine in time that the terminal device needs to be switched according to the measurement result, resulting in the UAV connection failure.
  • the current SON technology is not applicable to the scenario where the UAV fails to connect during movement, that is, the current SON technology cannot perform network optimization in this scenario.
  • the present application proposes a data transmission method, which can help network equipment to optimize the network for mobility-related issues in a scenario where the terminal device has a vertical movement speed.
  • the network optimization may include scenario-based detection (such as analyzing the cause) and scenario-based optimization.
  • the communication system can be a third generation partnership project (3GPP) communication system, for example, a 5G system such as an LTE system and an NR system, a satellite communication system, a non-terrestrial network (NTN) system, or a system of LTE and 5G hybrid networking, or a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an Internet of Things (IoT), and a communication system that will evolve in the future.
  • 3GPP third generation partnership project
  • 5G system such as an LTE system and an NR system
  • NTN non-terrestrial network
  • M2M machine-to-machine
  • IoT Internet of Things
  • the communication system can also be a non-3GPP communication system without limitation.
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low latency communication
  • MTC machine type communication
  • mMTC massive machine type communication
  • D2D and IoT and other communication scenarios.
  • the above-mentioned communication systems and communication scenarios applicable to the present application are only examples, and the communication systems and communication scenarios applicable to the present application are not limited to these.
  • the communication systems and communication scenarios provided by the present application do not impose any limitations on the scheme of the present application. They are uniformly described here and will not be repeated below.
  • the communication system includes at least two network devices and at least one terminal device.
  • different network devices can communicate with each other.
  • the at least two network devices may include a first network device and a second network device.
  • the terminal device may be connected to the second network device first, or may be connected to the second network device first.
  • the terminal device subsequently fails to connect during movement, and re-establishes an RRC connection to connect to the first network device. That is, the first network device is a network device to which the terminal device reconnects after a connection failure occurs, and the second network device is a network device to which the terminal device is connected before a connection failure occurs.
  • the terminal device has a moving speed in the vertical direction during the movement.
  • connection between the terminal device and the second network device can be understood as the connection between the terminal device and the first cell in the second network device, that is, the first cell is the service cell of the terminal device before the connection failure occurs.
  • connection between the terminal device and the first network device can be understood as the connection between the terminal device and the second cell in the first network device, that is, the second cell is the service cell of the terminal device after reconnection.
  • the terminal device and the network device can communicate via a Uu interface.
  • the network device is a device that connects the terminal device to a wireless network, which may be an LTE or an evolved LTE system (LTE-
  • LTE-A LTE Advanced
  • eNB or eNodeB LTE Advanced
  • LTE-A LTE Advanced
  • gNodeB or gNB next generation node B
  • TRP transmission reception point
  • PLMN broadband network service gateway
  • BNG broadband network service gateway
  • AP access point
  • the base stations in the embodiments of the present application may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), indoor stations, relay stations, access points, donor nodes, etc., and the embodiments of the present application do not specifically limit this.
  • a network device may refer to a module or unit that performs some functions of a base station.
  • a central unit (CU), or a network device may be composed of a CU and a distributed unit (DU).
  • CU and DU may be divided according to the protocol layer of the wireless network.
  • the functions of the RRC protocol layer, the service data adaptation protocol (SDAP) layer, and the packet data convergence protocol (PDCP) layer are set in the CU, while the functions of the radio link control (RLC) layer, the MAC layer, and the PHY layer are set in the DU.
  • RRC radio link control
  • MAC media access control
  • PHY Packet Control
  • the CU may be composed of a CU control plane (CU control plane, CU-CP) and a CU user plane (CU user plane, CU-UP).
  • CU control plane CU control plane, CU-CP
  • CU user plane CU-UP
  • the terminal device may refer to a user-side device with wireless transceiver functions, which can send signals to network devices or receive signals from network devices.
  • the terminal device may also be called user equipment (UE), terminal, access terminal, user unit, user station, mobile station (MS), remote station, remote terminal, mobile terminal (MT), user terminal, wireless communication device, user agent or user device, etc.
  • the terminal can be widely used in various scenarios, for example, it can be a wireless terminal in IoT, D2D, M2M, MTC, 5G network, or future evolved PLMN.
  • the terminal device can be deployed in the air (such as on airplanes, balloons and satellites, etc.).
  • the terminal device can be a drone, a helicopter, a robotic arm, an IoT device (e.g., a sensor, an electric meter, a water meter, etc.), a V2X device, a station (ST) in a wireless local area network (WLAN), a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a wearable device (also called a wearable smart device), a tablet computer or a computer with wireless transceiver function, a virtual reality (VR) device, a wearable device, a wearable smart device, a tablet computer or a computer with wireless transceiver function, a wearable device, a wearable smart device ...
  • IoT device e.g., a sensor, an electric meter, a water meter, etc.
  • VR virtual reality
  • industrial control industrial control
  • self driving self driving
  • remote medical remote medical
  • smart grid smart grid
  • transportation safety transportation safety
  • smart city smart city
  • smart home smart home control system
  • SCS smart home control system
  • OA office automation
  • drones with UAV to UAV (U2U) communication capabilities etc.
  • the functions of the network device may also be performed by a module (such as a chip) in the network device, or may also be performed by a control subsystem including the network device function.
  • the control subsystem including the network device function may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, smart city, etc.
  • the functions of the terminal device may also be performed by a module (such as a chip or a modem) in the terminal device, or may also be performed by a device including the terminal device function.
  • the communication system described in the embodiment of the present application is for the purpose of more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided in the embodiment of the present application.
  • a person of ordinary skill in the art can know that with the evolution of network architecture and the emergence of new business scenarios, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.
  • the relevant functions of the terminal device or network device involved in the present application can be implemented by the communication device 50 in Figure 5.
  • the communication device 50 includes one or more processors 501.
  • the communication device 50 may also include a communication bus 502 and at least one communication interface (Figure 5 is only exemplary, and the communication device 50 includes a communication interface 504 and a processor 501 as an example for explanation).
  • the communication device 50 may also include a memory 503.
  • Processor 501 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application, or a processing core for processing data (such as computer program instructions).
  • the processor may be a single-CPU processor or a multi-CPU processor.
  • the processor 501 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 5 .
  • the communication bus 502 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus.
  • the bus may be divided into an address bus, a data bus, a control bus, etc.
  • FIG5 is represented by only one thick line, but it does not mean that there is only one bus or one type of bus.
  • the communication bus 502 is used to connect different components in the communication device 50 so that different components in the communication device 50 can communicate and interact with each other.
  • the communication interface 504 may be a transceiver module for communicating with other devices or communication networks, such as Ethernet, RAN, wireless local area networks (WLAN), etc.
  • the communication interface 504 may be a device such as a transceiver or a transceiver.
  • the communication interface 504 may also be a transceiver circuit located in the processor 501, for realizing signal input and signal output of the processor.
  • the memory 503 may be a device with a storage function.
  • it may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.
  • the memory may be independent and connected to the processor via the communication bus 502.
  • the memory may also be integrated with the processor.
  • the memory 503 is used to store computer-executable instructions for executing the solution of the present application, and the execution is controlled by the processor 501.
  • the processor 501 is used to execute the computer-executable instructions stored in the memory 503, thereby implementing the method provided in the embodiment of the present application.
  • the processor 501 may also perform processing-related functions in the method provided in the following embodiments of the present application, and the communication interface 504 is responsible for communicating with other devices or communication networks, which is not specifically limited in the embodiments of the present application.
  • the computer-executable instructions in the embodiments of the present application may also be referred to as application code, which is not specifically limited in the embodiments of the present application.
  • the communication device 50 may further include an output device 505 and an input device 506.
  • the output device 505 communicates with the processor 501 and may display information in a variety of ways.
  • the output device 505 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector.
  • the input device 506 communicates with the processor 501 and may receive user input in a variety of ways.
  • the input device 506 may be a mouse, a keyboard, a touch screen device, or a sensor device.
  • composition structure shown in FIG5 does not constitute a limitation on the communication device.
  • the communication device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.
  • the network device can perform some or all of the steps in the embodiment of the present application, and these steps or operations are only examples.
  • the embodiment of the present application can also perform other operations or various operations.
  • each step can be performed in a different order presented in the embodiment of the present application, and it is possible not to perform all the operations in the embodiment of the present application.
  • a data transmission method includes the following steps:
  • the terminal device determines first information.
  • the first information indicates that a connection failure occurred in the terminal device during the movement, and that the terminal device has a moving speed in the vertical direction during the movement.
  • connection failure may include RLF or handover failure.
  • the first information includes at least one of the following:
  • the location information of the terminal device may be the absolute location of the terminal device in the two-dimensional space, or may be the location of the terminal device relative to the second network device in the two-dimensional space.
  • the location information of the terminal device when the location information of the terminal device is the absolute location of the terminal device in a two-dimensional space, the location information of the terminal device may include the coordinates of the terminal device in a latitude and longitude coordinate system.
  • the location information of the terminal device can be represented by a method related to the location information specified in the protocol (such as the 3GPP protocol).
  • the location information of the terminal device when the location information of the terminal device is the location of the terminal device relative to the second network device in a two-dimensional space, the location information of the terminal device may include the location of the terminal device relative to the second network device.
  • the location information of the terminal device may be represented by a relative distance between the terminal device and the second network device in a horizontal direction.
  • the location information of the terminal device may be determined by the terminal device, or determined by the second network device and notified to the terminal device.
  • the terminal device may calculate the relative distance between itself and the second network device in the horizontal direction through the data transmission time between itself and the second network device, and further determine its location information.
  • the second network device may calculate its relative distance to the terminal device in the horizontal direction according to the coordinates of the terminal device in the latitude and longitude coordinate system, thereby determining the location information of the terminal device, and sending the location information of the terminal device to the terminal device.
  • the moving speed of the terminal device may be the speed of the terminal device in a vertical direction, or may also be the speed of the terminal device in a horizontal direction.
  • the height information of the terminal device may include the height of the terminal device relative to the second network device, for example, the height difference between the terminal device and the second network device.
  • the height of the terminal device when the height of the terminal device is 50 meters and the height of the second network device is 60 meters, the height of the terminal device relative to the second network device may be -10 meters. When the height of the terminal device is 60 meters and the height of the second network device is 50 meters, the height of the terminal device relative to the second network device may be 10 meters.
  • the height information of the terminal device may include the absolute height of the terminal device, such as the altitude.
  • the movement track may be pre-set by the terminal device or the second network device.
  • the terminal device may move according to the movement track.
  • the start time of the first time period may be a preset time, for example, the preset time may be the 10th second (s) before the time when the connection failure occurs.
  • the start time of the first time period may be determined according to a signal quality threshold that causes the connection failure.
  • the time when the signal quality of the first cell is less than a signal quality threshold causing connection failure is determined as the start time of the first time period.
  • any time between time A and time B can be determined as the starting time of the first time period.
  • Time B is the time when the connection failure occurs
  • time A is the time before the connection failure occurs.
  • the length of the first time period can be 10 seconds.
  • the duration of the first time period may be longer or shorter.
  • the duration of the first time period may be 5 seconds, and this application does not impose any specific limitation.
  • the terminal device may determine the signal quality of the first cell with a period of seconds or milliseconds (ms), for example, determining the signal quality of the first cell once per second or per millisecond, and the present application does not impose any restrictions thereto.
  • ms milliseconds
  • a trigger cell list which includes identifiers of cells that meet preset conditions.
  • the preset condition may be a triggering event for measurement reporting.
  • the preset condition may be event A1, event A2, event A3, event A4, event A5, event H1, event H2, etc.
  • events A1 to A5 may refer to the definitions in the foregoing text, event H1 is that the height of the terminal device is greater than the fourth preset threshold; event H2 is that the height of the terminal device is less than the fifth preset threshold.
  • identifiers of cells that meet preset conditions may form a triggering cell list.
  • the last switch may be understood as a switch that the terminal device should have executed but did not actually execute before the connection failure occurred.
  • connection failure may be caused by the terminal device not having enough time to switch the cell when it should have done so (i.e., the switching was too late).
  • the switching that the terminal device should have done may include: the terminal device sending a measurement report to the second network device, and the second network device sending a measurement report to the second network device.
  • the target network device is determined according to the measurement report, and a switching request is sent to the target network device. After receiving the switching request, the target network device performs access control.
  • the target network device sends a switching confirmation message to the second network device.
  • the switching confirmation message includes the RRC reconfiguration information of the terminal device.
  • the second network device forwards the switching confirmation message to the terminal device.
  • the terminal device performs switching according to the switching confirmation message.
  • the terminal device failed to report the measurement report in advance and the second network device failed to determine in time that the terminal device needs to switch according to the measurement report, the terminal device failed to switch in time, and then the connection failed.
  • Vertical switching can be understood as the signal coverage areas of the service cells (or source cells and target cells) of the terminal device in the vertical direction are different before and after the switching.
  • the upper limit heights of the signal coverage areas of the second network device and the third network device in the vertical direction are different; or, the lower limit heights of the signal coverage areas of the second network device and the third network device in the vertical direction are different.
  • the signal coverage area of the second network device in the vertical direction is [M, O]
  • the signal coverage area of the third network device in the vertical direction is [N, P].
  • the terminal device moves upward, in the process of moving from point M to point O
  • the second network device provides services to the terminal device, that is, the terminal device is connected to the second network device.
  • the third network device needs to provide services for it, that is, the terminal device needs to be connected to the third network device. Therefore, when approaching point O or at point O, the terminal device needs to switch from the second network device to the third network device.
  • the type of switching can be called vertical switching.
  • the signal coverage area of the second network device in the vertical direction is [T, R]
  • the signal coverage area of the third network device in the vertical direction is [S, Q].
  • the terminal device moves downward, in the process of moving from point R to point T, the second network device provides services to the terminal device, that is, the terminal device is connected to the second network device. Since the lower limit height of the signal coverage area of the third network device in the vertical direction is less than the lower limit height of the signal coverage area of the second network device in the vertical direction, in the process of moving from point T to point S, the third network device needs to provide services for it, that is, the terminal device needs to be connected to the third network device. Therefore, when approaching point T or at point T, the terminal device needs to switch from the second network device to the third network device.
  • the type of switching can be called vertical switching.
  • the second network device determines according to the switching type that the scenario in which the terminal device fails to connect is that the terminal device has a moving speed in the vertical direction during the moving process. For example, the terminal device moves in the vertical direction. Then, the network optimization can be performed according to this scenario to achieve network optimization in the scenario in which the terminal device fails to connect during the moving process in which the terminal device has a moving speed in the vertical direction.
  • the terminal device sends first information to the first network device.
  • the first network device receives the first information from the terminal device.
  • the terminal device may send the first information to the first network device after establishing a connection with the first network device.
  • the first information may be carried in the RLF report.
  • the first network device sends second information to the second network device.
  • the second network device receives the second information from the first network device.
  • the second information may be used by the second network device to analyze the cause of the connection failure; and/or, the second information may be used by the second network device to perform network optimization based on the connection failure.
  • the first network device after receiving the first information, sends the second information to the second network device.
  • the action of the first network device sending the second information to the second network device may be triggered by the first network device receiving the first information.
  • the second information may be carried in the RLF indication information.
  • the second information includes at least one of the following:
  • the position of the first network device relative to the second network device may be understood as the position of the first network device relative to the second network device in three-dimensional space.
  • the position of the first network device relative to the second network device may include a height of the first network device relative to the second network device.
  • the height of the first network device when the height of the first network device is 50 meters and the height of the second network device is 60 meters, the height of the first network device relative to the second network device may be -10 meters. When the height of the first network device is 60 meters and the height of the second network device is 50 meters, the height of the first network device relative to the second network device may be 10 meters.
  • the position of the first network device relative to the second network device may include a three-dimensional coordinate of the first network device relative to the second network device.
  • the position of the first network device relative to the second network device can be 1 degree west longitude, 1 degree north latitude, and -10 meters in altitude.
  • the first signal coverage area can be understood as an area where the terminal device is prone to connection failure.
  • the upper limit height of the first signal coverage area may be the height at which the terminal device is located when the connection failure occurs.
  • point E is the height at which the terminal device is located when the connection failure occurs, and therefore is the upper limit height of the first signal coverage area.
  • point F is the lower limit height of the first signal coverage area, that is, the range between point E and point F is the first signal coverage area.
  • the lower limit height of the first signal coverage area may be the height at which the terminal device is located when the connection failure occurs.
  • point E is the height at which the terminal device is located when the connection failure occurs, and is therefore the lower limit height of the first signal coverage area.
  • point G is the upper limit height of the first signal coverage area, that is, the vertical range between point E and point G is the first signal coverage area.
  • the height of the terminal device at the time of the connection failure is within the first signal coverage area.
  • point E is the height of the terminal device at the time of the connection failure
  • point G is the upper limit height of the first signal coverage area
  • point F is the lower limit height of the first signal coverage area. Therefore, the range between point F and point G in the vertical direction is the first signal coverage area.
  • the first signal coverage area is located within the signal coverage area of the first network device.
  • the upper limit height of the first signal coverage area is less than or equal to the upper limit height of the signal coverage area of the first network device; the lower limit height of the first signal coverage area is less than or equal to the lower limit height of the signal coverage area of the first network device.
  • the signal coverage area within the height range of [50, 60] meters in the signal coverage area of the first network device can be determined as the first signal coverage area.
  • the signal coverage area of the first network device in the vertical direction may be determined through a drive test when the first network device is deployed.
  • the second time period includes the moment when the terminal device is connected to the second cell.
  • the moment when the terminal device is connected to the second cell may be understood as the moment when the terminal device is successfully connected to the second cell.
  • the start time of the second time period may be the time when the connection failure occurs.
  • the end time of the second time period is less than or equal to a preset time threshold.
  • the preset time threshold may be 10 seconds after the connection failure occurs.
  • the duration of the second time period is only 10 seconds.
  • the duration of the second time period may be longer or shorter, and this application does not impose any specific limitation.
  • the terminal device or the first network device may determine the signal strength of the second cell with a period of seconds or milliseconds, for example, once per second or once per millisecond, and the present application does not impose any limitation thereto.
  • the manner of determining the signal strength of the second cell in the second time period may include the following two methods:
  • the signal strength of the second cell in the second time period may be determined by the terminal device and notified to the first network device.
  • the first network device may send first indication information to the terminal device, wherein the first indication information instructs the terminal device to measure the signal strength of the second cell in the second time period.
  • the terminal device measures the signal strength of the second cell in the second time period according to the first indication information and reports it to the first network device.
  • the first network device may estimate the signal strength of the second cell within the second time period according to the location of the terminal device within the second time period.
  • the first network device estimates the signal strength of the second cell in the second time period according to the distance between the first network device and the terminal device in the second time period. For example, the first network device obtains the path loss in the signal propagation process according to the distance between the first network device and the terminal device in the second time period, and then determines the signal strength of the second cell in the second time period.
  • the terminal device sends the signal strength of the second cell in the second time period to the first network device at the end of the second time period.
  • the first information can refer to the relevant description in the above step S601, which will not be repeated here.
  • S604 The second network device performs processing according to the second information.
  • the second network device can determine whether the terminal device is in an area without signal coverage when the connection failure occurs based on the first information.
  • the second network device may determine whether the connection failure is caused by The connection failure is caused by the terminal device moving to an area not covered by the signal. If the terminal device is not in the area not covered by the signal when the connection failure occurs, the second network device can determine that the connection failure is not caused by the terminal device moving to the area not covered by the signal.
  • the second network device can adjust the signal coverage area and/or beam direction of the second network device according to the movement trajectory, so that the signal coverage area of the second network device includes the area not covered by the signal.
  • the second network device can analyze whether the connection failure occurs because the terminal device moves to an area where no signal is provided based on the movement trajectory of the terminal device. In the case of a connection failure caused by the terminal device moving to an area where no signal is provided, the second network device can optimize the network according to the reason; in the case of a connection failure not caused by the terminal device moving to an area where no signal is provided, the second network device can exclude the case where the connection failure occurs because the terminal device moves to an area where no signal coverage is provided, so as to increase the probability of the second network device obtaining the correct reason for the connection failure, thereby enabling the second network device to optimize the network according to the correct reason.
  • the second network device may also determine, based on the movement trajectory of the terminal device, whether the terminal device is in a no-fly zone when the connection failure occurs.
  • the second network device may determine that the connection failure is caused by the terminal device moving to the no-fly zone.
  • the second network device may determine that the connection failure is not caused by the terminal device moving to the no-fly zone.
  • the second network device can analyze whether the connection failure occurs because the terminal device moves to the no-fly zone based on the movement trajectory of the terminal device. In the case where the connection failure is not caused by the terminal device moving to the no-fly zone, the second network device can exclude the case where the connection failure occurs because the terminal device moves to the no-fly zone, so as to increase the probability of the second network device obtaining the correct reason for the connection failure, so that the second network device can perform network optimization according to the correct reason.
  • the second network device compares the signal quality of the first cell in the first time period with the signal quality threshold that causes the connection failure.
  • the second network device determines that the connection failure may occur because the signal quality of the first cell in the first time period is poor.
  • the second network device determines that the connection failure does not occur because the signal quality of the first cell in the first time period is poor.
  • the second network device may improve the signal quality of the first cell in the first time period.
  • the second network device may improve the signal quality of the first cell in the first time period by adjusting the transmission power of the signal.
  • the second network device can analyze whether the connection failure occurs due to the deterioration of signal quality according to the signal quality of the first cell in the first time period.
  • the second network device can optimize the network according to the signal quality of the first cell in the first time period. For example, the second network device can improve the signal quality of the first cell to ensure normal communication between the subsequent terminal device and the second network device to avoid connection failure.
  • the second network device may compare the first quantity with a preset quantity threshold.
  • the preset quantity threshold is used to trigger the terminal device to report.
  • the second network device determines that the connection failure occurs because the terminal device does not report, that is, the terminal device does not report the measurement report in time.
  • the first number is greater than or equal to the preset number threshold, the second network device determines that the connection failure does not occur because the terminal device does not trigger the report.
  • the first number is the number of cell identifiers that meet the preset conditions.
  • the second network device may reduce the preset number threshold.
  • the second network device may reduce the duration of TTT.
  • the second network device can analyze whether the connection failure occurs because the terminal device does not trigger a report based on the first number and the preset number threshold.
  • the second network device can optimize the network based on the reason why the terminal device does not trigger a report; for example, the second network device can lower the threshold for the terminal device to trigger a report (such as reducing the preset number threshold, reducing the duration of TTT, etc.) to increase the frequency of reports sent by the terminal device, thereby enabling the terminal device to report the measurement results in a timely manner, thereby avoiding connection failures in the terminal device.
  • the second network device can eliminate the reason why the terminal device did not trigger the report, so as to increase the probability of the second network device obtaining the correct reason for the connection failure, so that the second network device can further optimize the network according to the correct reason.
  • the second network device may adjust the signal coverage area of the second network device, wherein the adjusted signal coverage area of the second network device includes the height of the highest point of the first network device.
  • the second network device may adjust the signal coverage area of the second network device by adjusting its beam pointing direction.
  • the second network device may adjust the beam direction of the second network device according to the height of the first network device relative to the second network device.
  • the second network device may determine the direction of the first network device relative to the second network device based on the three-dimensional coordinates of the first network device relative to the second network device, and then adjust the beam pointing according to the direction.
  • the second network device can adjust the beam pointing direction of the second network device so that the signal coverage area of the second network device can include the height of the highest point of the first network device, so that when the terminal device passes through the highest point of the first network device, the terminal device can maintain communication with the second network device, thereby being able to send a measurement report to the second network device in a timely manner, and the second network device can promptly indicate switching to avoid connection failure.
  • the second network device may send switching confirmation information to the terminal device to instruct the terminal device to perform switching based on the position of the first network device relative to the second network device.
  • the second network device may determine the position of the highest point of the first network device according to the position of the first network device relative to the second network device, and then send switching confirmation information to the terminal device according to the position of the highest point.
  • the second network device may be configured with a first trigger mechanism, in which when the terminal device moves to the highest point of the first network device, or is close to the highest point of the first network device, the second network device sends a switching confirmation message to the terminal device.
  • the second network device can set a first trigger mechanism to send a switching confirmation message to the terminal device when the terminal device passes through the highest point of the first network device, regardless of whether the second network device receives a measurement report from the terminal device, so as to avoid connection failure caused by the terminal device failing to report the measurement result in advance.
  • the second network device may adjust the signal coverage area of the second network device, wherein the signal coverage area of the second network device after adjustment includes the first signal coverage area.
  • the second network device may adjust the signal coverage area of the second network device by adjusting its beam pointing direction.
  • the second network device may adjust the beam direction of the second network device upward or downward according to the upper limit height or the lower limit height of the first signal coverage area.
  • point U is the height of the terminal device when the connection failure occurs, and the first signal coverage area is [X, Y]; therefore, as shown in FIG9 (a), during the upward movement of the terminal device, the second network device can adjust the beam pointing of the second network device upward according to the upper limit height point X of the first signal coverage area. As shown in FIG9 (b), during the downward movement of the terminal device, the second network device can adjust the beam pointing of the second network device downward according to the lower limit height point Y of the first signal coverage area.
  • the second network device may send switching confirmation information to the terminal device according to the first signal coverage area to instruct the terminal device to perform switching.
  • the second network device may set a second trigger mechanism, which indicates that when the terminal device moves to the lower limit height of the first signal coverage area, the second network device sends a switching confirmation message to the terminal device, and the switching confirmation message instructs the terminal device to switch to the first network device.
  • the second network device may set a third trigger mechanism, where the second trigger mechanism indicates that when the terminal device moves to the upper limit height of the first signal coverage area, the second network device sends a switching confirmation message to the terminal device, and the switching confirmation message instructs the terminal device to switch to the first network device.
  • the third trigger mechanism is triggered, and the second network device sends a switching confirmation message to the terminal device, and the switching confirmation message indicates that the terminal device Switch to the first network device.
  • the second network device performs network optimization according to the first signal coverage area to avoid connection failure caused by the terminal failing to report measurement results in advance.
  • the terminal device can send the first information to the first network device, so that the first network device can know that the terminal device has a moving speed in the vertical direction and that a connection failure occurred during the movement, thereby enabling the first network device to send information related to the connection failure scenario to the network device to which the terminal device was connected before the connection failure occurred, thereby helping the network device to which the terminal device was connected before the connection failure occurred to optimize the network for the scenario.
  • the core network can also perform network optimization, that is, after the first network device receives the first information, it sends the second information to the core network, so that the core network can process according to the second information and notify the second network device.
  • the process of the core network performing network optimization can refer to the process of the second network device performing network optimization, and this application will not repeat it.
  • the methods and/or steps implemented by the network device can also be implemented by components that can be used for the network device (such as a processor, a chip, a chip system, a circuit, a logic module, or software such as a chip or a circuit); the methods and/or steps implemented by the terminal device can also be implemented by components that can be used for the terminal device (such as a processor, a chip, a chip system, a circuit, a logic module, or software such as a chip or a circuit).
  • the above mainly introduces the scheme provided by the present application. Accordingly, the present application also provides a communication device, which is used to implement the above-mentioned various methods.
  • the communication device can be a terminal device in the above-mentioned method embodiment, or a device including the above-mentioned terminal device, or a component that can be used for a terminal device, such as a chip or a chip system; or, the communication device can be a network device in the above-mentioned method embodiment, or a device including the above-mentioned network device, or a component that can be used for a network device, such as a chip or a chip system.
  • the communication device may include a module or unit for implementing the data transmission method above. The following only describes the main steps of the scheme. For specific details, please refer to the previous method embodiment, which will not be repeated below.
  • the communication device includes hardware structures and/or software modules corresponding to the execution of each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.
  • the embodiment of the present application can divide the functional modules of the communication device according to the above method embodiment.
  • each functional module can be divided according to each function, or two or more functions can be integrated into one processing module.
  • the above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.
  • the Communication Device Fig. 10 shows a schematic diagram of the structure of a communication device 100.
  • the communication device 100 includes a processing module 1001 and a transceiver module 1002.
  • the communication device 100 can be used to implement the functions of the above-mentioned network device or terminal device.
  • the communication device 100 may further include a storage module (not shown in FIG. 10 ) for storing program instructions and data.
  • the transceiver module 1002 may also be referred to as a transceiver unit for implementing a sending and/or receiving function.
  • the transceiver module 1002 may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.
  • the transceiver module 1002 may include a receiving module and a sending module, which are respectively used to execute the receiving and sending steps performed by the network device or terminal device in the above-mentioned method embodiment, and/or used to support other processes of the technology described in this document; the processing module 1001 may be used to execute the processing steps (such as determination, generation, etc.) performed by the network device or terminal device in the above-mentioned method embodiment, and/or used to support other processes of the technology described in this document.
  • the processing module 1001 may be used to execute the processing steps (such as determination, generation, etc.) performed by the network device or terminal device in the above-mentioned method embodiment, and/or used to support other processes of the technology described in this document.
  • the processing module 1001 is used to determine the first information.
  • the first information indicates that the terminal device has a connection failure during the movement, and the terminal device has a vertical movement speed during the movement.
  • the transceiver module 1002 is used to send the first information to the first network device.
  • the first network device is the network device to which the terminal device reconnects after the connection failure occurs.
  • the first information includes at least one of location information, moving speed and altitude information of the terminal device when the connection failure occurs.
  • the location information includes the location of the terminal device relative to a second network device, where the second network device is the network device to which the terminal device is connected before the connection failure occurs; or, the location information includes the coordinates of the terminal device in a latitude and longitude coordinate system.
  • the height information includes the height of the terminal device relative to the second network device, or the height information includes the absolute height of the terminal device. high.
  • the first information includes a movement trajectory of the terminal device.
  • the first information includes a signal quality of a first cell in a first time period, the first cell being a service cell of the terminal device before the connection failure occurs, and the end time of the first time period being the time when the connection failure occurs.
  • the first information includes an identifier of a cell in a neighboring cell of the first cell that meets a preset condition.
  • the first information includes a triggering cell list
  • the triggering cell list includes identifiers of cells that meet preset conditions.
  • the first information includes a switching type of the last switching of the terminal device, wherein the switching type is a vertical switching.
  • the transceiver module 1002 is used to receive first information from a terminal device.
  • the first information indicates that a connection failure occurred during the movement of the terminal device, and the terminal device has a moving speed in the vertical direction during the movement.
  • the transceiver module 1002 is also used to send second information to the second network device, and the second information includes the position of the first network device relative to the second network device, the first signal coverage area of the first network device in the vertical direction, the signal strength of the second cell in the second time period, and at least one of the first information.
  • the second network device is the network device to which the terminal device is connected before the connection failure occurs; when the connection failure occurs, the terminal device is located in the first signal coverage area, the second cell is the service cell to which the terminal device reconnects after the connection failure occurs, and the second time period includes the moment when the terminal device connects to the second cell.
  • the first information includes at least one of location information, moving speed and altitude information of the terminal device when the connection failure occurs.
  • the location information includes the location of the terminal device relative to a second network device, where the second network device is the network device to which the terminal device is connected before the connection failure occurs; or, the location information includes the coordinates of the terminal device in a latitude and longitude coordinate system.
  • the height information includes the height of the terminal device relative to the second network device, or the height information includes the absolute height of the terminal device.
  • the first information includes a movement trajectory of the terminal device.
  • the first information includes a signal quality of a first cell in a first time period, the first cell being a service cell of the terminal device before the connection failure occurs, and the end time of the first time period being the time when the connection failure occurs.
  • the first information includes an identifier of a cell in a neighboring cell of the first cell that meets a preset condition.
  • the first information includes a triggering cell list
  • the triggering cell list includes identifiers of cells that meet preset conditions.
  • the first information includes a switching type of the last switching of the terminal device, wherein the switching type is a vertical switching.
  • the transceiver module 1002 is used to receive second information from the first network device.
  • the first network device is a network device to which the terminal device reconnects after a connection failure occurs;
  • the second network device is a network device to which the terminal device connects before the connection failure occurs.
  • the second information includes at least one of the position of the first network device relative to the second network device, the first signal coverage area of the first network device in the vertical direction, the signal strength of the second cell in the second time period, and the first information.
  • the processing module 1001 is used to process according to the second information.
  • the terminal device when the connection failure occurs, the terminal device is located in the first signal coverage area, the second cell is the service cell that the terminal device reconnects to after the connection failure occurs, and the second time period includes the moment when the terminal device connects to the second cell.
  • the first information includes at least one of location information, moving speed and altitude information of the terminal device when the connection failure occurs.
  • the location information includes the location of the terminal device relative to a second network device, where the second network device is the network device to which the terminal device is connected before the connection failure occurs; or, the location information includes the coordinates of the terminal device in a latitude and longitude coordinate system.
  • the height information includes the height of the terminal device relative to the second network device, or the height information includes the absolute height of the terminal device.
  • the first information includes a movement trajectory of the terminal device.
  • the first information includes a signal quality of a first cell in a first time period, the first cell being a service cell of the terminal device before the connection failure occurs, and the end time of the first time period being the time when the connection failure occurs.
  • the first information includes an identifier of a cell in a neighboring cell of the first cell that meets a preset condition.
  • the first information includes a triggering cell list
  • the triggering cell list includes identifiers of cells that meet preset conditions.
  • the first information includes a switching type of the last switching of the terminal device, wherein the switching type is a vertical switching.
  • the communication device 100 may be presented in the form of dividing various functional modules in an integrated manner.
  • the "module” here may refer to a specific application-specific integrated circuit (ASIC), a circuit, a processor and a memory that executes one or more software or firmware programs, an integrated logic circuit, and/or other devices that can provide the above functions.
  • ASIC application-specific integrated circuit
  • the function/implementation process of the transceiver module 1002 can be implemented through the input and output interface (or communication interface) of the chip or the chip system, and the function/implementation process of the processing module 1001 can be implemented through the processor (or processing circuit) of the chip or the chip system.
  • the communication device 100 provided in this embodiment can execute the above method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.
  • the network device or terminal device described in the embodiments of the present application can also be implemented using the following: one or more field programmable gate arrays (FPGA), programmable logic devices (PLD), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits that can perform the various functions described throughout the present application.
  • FPGA field programmable gate arrays
  • PLD programmable logic devices
  • controllers state machines
  • gate logic discrete hardware components
  • discrete hardware components any other suitable circuits, or any combination of circuits that can perform the various functions described throughout the present application.
  • the network device or terminal device described in the embodiments of the present application can also be implemented using the following: one or more field programmable gate arrays (FPGA), programmable logic devices (PLD), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits that can perform the various functions described throughout the present application.
  • FPGA field programmable gate arrays
  • PLD programmable logic devices
  • controllers state machines
  • gate logic discrete hardware components
  • discrete hardware components any other suitable circuits, or any combination of circuits that can perform the various functions described throughout the present application.
  • the network device or terminal device of the embodiment of the present application can be implemented by a general bus architecture.
  • Figure 11 is a structural diagram of a communication device 1100 provided in an embodiment of the present application, and the communication device 1100 includes a processor 1101 and a transceiver 1102.
  • the communication device 1100 can be a terminal device, or a chip or chip system therein; or, the communication device 1100 can be a network device, or a chip or module therein.
  • Figure 11 only shows the main components of the communication device 1100.
  • the communication device may further include a memory 1103, and an input and output device (not shown in the figure).
  • the processor 1101 is mainly used to process the communication protocol and communication data, and to control the entire communication device, execute the software program, and process the data of the software program.
  • the memory 1103 is mainly used to store the software program and data.
  • the transceiver 1102 may include a radio frequency circuit and an antenna.
  • the radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals.
  • the antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves.
  • the input and output devices such as a touch screen, a display screen, a keyboard, etc., are mainly used to receive data input by the user and output data to the user.
  • the processor 1101 , the transceiver 1102 , and the memory 1103 may be connected via a communication bus.
  • the processor 1101 can read the software program in the memory 1103, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor 1101 performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal outward in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1101.
  • the processor 1101 converts the baseband signal into data and processes the data.
  • the RF circuit and antenna may be arranged independently of the processor performing baseband processing.
  • the RF circuit and antenna may be arranged independently of the communication device in a remote manner.
  • the communication device 100 may take the form of the communication device 1100 shown in FIG. 11 .
  • the function/implementation process of the processing module 1001 in FIG10 can be implemented by the processor 1101 in the communication device 1100 shown in FIG11 calling the computer execution instructions stored in the memory 1103.
  • the function/implementation process of the transceiver module 1002 in FIG10 can be implemented by the transceiver 1102 in the communication device 1100 shown in FIG11.
  • an embodiment of the present application further provides a communication device, which includes a processor for implementing a method in any of the above method embodiments.
  • the communication device further includes a memory.
  • the memory is used to store necessary computer programs and data.
  • the computer program may include instructions, and the processor may call the instructions in the computer program stored in the memory to instruct the communication device to execute the method in any of the above method embodiments.
  • the memory may not be in the communication device.
  • the communication device further includes an interface circuit, which is a code/data read/write interface circuit, and the interface circuit is used to receive computer execution instructions (the computer execution instructions are stored in the memory, may be read directly from the memory, or may be can pass through other devices) and be transmitted to the processor.
  • an interface circuit which is a code/data read/write interface circuit, and the interface circuit is used to receive computer execution instructions (the computer execution instructions are stored in the memory, may be read directly from the memory, or may be can pass through other devices) and be transmitted to the processor.
  • the communication device further includes a communication interface, and the communication interface is used to communicate with a module outside the communication device.
  • the communication device can be a chip or a chip system.
  • the communication device can be composed of chips, or it can include chips and other discrete devices.
  • the embodiments of the present application do not specifically limit this.
  • the present application also provides a computer-readable storage medium on which a computer program or instruction is stored.
  • a computer program or instruction is stored on which a computer program or instruction is stored.
  • the present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.
  • the systems, devices and methods described in the present application can also be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, i.e., they may be located in one place, or they may be distributed over multiple network units.
  • the components shown as units may or may not be physical units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium may be any available medium that a computer can access or may contain one or more servers, data centers and other data storage devices that can be integrated with the medium.
  • the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)).
  • the computer may include the aforementioned device.

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Abstract

本申请提供一种数据传输方法及装置，能够帮助网络设备对终端设备在垂直方向具有移动速度的场景下的移动性相关问题进行网络优化。该方法包括：终端设备确定第一信息，并向第一网络设备发送该第一信息。第一信息指示终端设备在移动过程中发生了连接失败，且移动过程中终端设备在垂直方向上存在移动速度。第一网络设备为发生连接失败后终端设备重新连接的网络设备。第一网络设备收到第一信息后向第二网络设备发送第二信息，第二信息包括第一网络设备相对于第二网络设备的位置、第一网络设备在垂直方向上的第一信号覆盖区域、第二时间段内第二小区的信号强度和第一信息中的至少一项。第二网络设备接收该第二信息并根据第二信息进行处理。

Description

一种数据传输方法及装置
本申请要求于2023年02月08日提交国家知识产权局、申请号为202310122771.7、申请名称为“一种数据传输方法及装置”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
本申请实施例涉及通信领域，尤其涉及一种数据传输方法及装置。
背景技术
随着通信技术的快速发展，运营商的网络建设和维护遇到了越来越多的挑战。与之前的通信系统相比，第五代(5th generation，5G)通信系统有着巨大的优势，如能提供更大的无线带宽、更多数量和更高质量的宽带应用等。但5G运营商必须选择高效率且低成本的方式来维系运营，因此第三代合作伙伴计划(3rd generation partnership project，3GPP)提出了自组织网络(self orginazing network，SON)的概念。
基于SON技术，网络能够自行分析网络中的数据，并自主完成相应的网络配置与优化。其中，SON包含自配置、自优化、小区失效的检测与优化三个部分。
然而，随着用户需求的多样化以及新兴通信场景的出现，目前的SON技术存在缺点。
发明内容
本申请提供一种数据传输方法及装置，在终端设备在垂直方向具有移动速度的场景下，能够帮助网络设备针对移动性相关问题进行网络优化。
第一方面，提供了一种数据传输方法，该方法可以由终端设备执行，也可以由终端设备的部件，例如终端设备的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分终端设备功能的逻辑模块或软件实现。该方法包括：确定第一信息，第一信息指示终端设备在移动过程中发生了连接失败，且移动过程中终端设备在垂直方向上存在移动速度；向第一网络设备发送第一信息，第一网络设备为发生连接失败后终端设备重新连接的网络设备。
基于该方案，终端设备可以向第一网络设备发送第一信息，使得第一网络设备能够获知终端设备在垂直方向上具有移动速度，且在移动过程中发生了连接失败，从而使得第一网络设备能够向发生连接失败前终端设备连接的网络设备发送与该连接失败场景相关的信息，帮助发生连接失败前终端设备连接的网络设备针对该场景进行网络优化。
第二方面，提供了一种数据传输方法，该方法可以由第一网络设备执行，也可以由第一网络设备的部件，例如第一网络设备的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分第一网络设备功能的逻辑模块或软件实现。该方法包括：接收来自终端设备的第一信息，第一信息指示终端设备在移动过程中发生了连接失败，且移动过程中终端设备在垂直方向上存在移动速度；向第二网络设备发送第二信息，第二信息包括第一网络设备相对于第二网络设备的位置、第一网络设备在垂直方向上的第一信号覆盖区域、第二时间段内第二小区的信号强度和第一信息中的至少一项；其中，第二网络设备为发生连接失败前终端设备连接的网络设备；发生连接失败时终端设备位于第一信号覆盖区域内，第二小区为终端设备发生连接失败后重新连接的服务小区，第二时间段包括终端设备连接到第二小区的时刻。
基于该方案，第一网络设备接收来自终端设备的第一信息，可以获知终端设备在垂直方向上具有移动速度，且在移动过程中发生了连接失败，从而向第二网络设备发送与该连接失败场景相关的第二信息，如连接失败前后终端设备连接的网络设备的相对位置信息、发生连接失败时终端设备所处的信号覆盖区域、发生连接失败前服务小区的信号强度和第一信息中的至少一项等，以帮助第二网络设备针对该场景进行网络优化。
第三方面，提供了一种数据传输方法，该方法可以由第二网络设备执行，也可以由第二网络设备的部件，例如第二网络设备的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分第二网络设备功能的逻辑模块或软件实现。该方法包括：接收来自第一网络设备的第二信息，第一网络设备为发生连接失败后终端设备重新连接的网络设备；第二网络设备为发生连接失败前终端设备连接的网络设备；根据第二信息进行处理；其中，第二信息包括第一网络设备相对于第二网络设备的位置、第一网络设备在垂直方向上的第一信号覆盖区域、第二时间段内第二小区的信号强度和第一信息中的至少一项；其中，发生连接失败时终端设备位于第一信号覆盖区域内，第二小区为终端设备发生连接失败后重新连接的服务小区，第二时间段包括终端设备连接到第二小区的时刻。
基于该方案，第二网络设备可以接收到来自第一网络设备的与连接失败场景相关的第二信息，如连接失败前后终端设备连接的网络设备的相对位置信息、发生连接失败时终端设备所处的信号覆盖区域、发生连接失败前服务小区的信号强度、和用于指示终端设备在移动过程中发生了连接失败，且移动过程中终端设备在垂直方向上存在移动速度的第一信息中的至少一项，从而可以在终端设备在垂直方向具有移动速度的场景下，根据第二信息对移动性相关问题进行网络优化。
结合第一方面、第二方面或第三方面，在一种可能的设计中，第一信息包括发生连接失败时终端设备的位置信息、移动速度和高度信息中的至少一项。
结合第一方面、第二方面或第三方面，在一种可能的设计中，位置信息包括终端设备相对于第二网络设备的位置，第二网络设备为发生连接失败前终端设备连接的网络设备；或者，位置信息包括终端设备在经纬度坐标系中的坐标。
结合第一方面、第二方面或第三方面，在一种可能的设计中，高度信息包括终端设备相对于第二网络设备的高度，或者，高度信息包括终端设备的绝对高度。
结合第一方面、第二方面或第三方面，在一种可能的设计中，第一信息包括终端设备的移动轨迹。
基于该可能的设计，第二网络设备可以基于终端设备的移动轨迹分析是否因为终端设备移动到不能提供信号的区域而发生连接失败。在由于终端设备移动到不能提供信号的区域造成的连接失败的情况下，第二网络设备可以根据该原因进行网络优化；在不是由于终端设备移动到不能提供信号的区域造成的连接失败的情况下，第二网络设备可以排除终端设备移动到不能提供信号的区域而发生连接失败的情况，以提高第二网络设备获取发生连接失败的正确原因的几率，从而使得第二网络设备能够根据该正确原因进而进行网络优化。
结合第一方面、第二方面或第三方面，在一种可能的设计中，第一信息包括终端设备最后一次切换的切换类型。其中，切换类型为垂直切换。
基于该可能的设计，第二网络设备根据该切换类型确定：终端设备在移动过程中发生连接失败的场景为移动过程中，终端设备在垂直方向上具有移动速度。例如，终端设备在垂直方向上移动。进而能够根据该场景进行网络优化，以实现针对终端设备在垂直方向上具有移动速度的移动过程中发生连接失败的场景下的网络优化。
结合第一方面、第二方面或第三方面，在一种可能的设计中，第一信息包括第一时间段内第一小区的信号质量，第一小区为发生连接失败前终端设备的服务小区，第一时间段的结束时刻为发生连接失败的时刻。
基于该可能的设计，第二网络设备能够根据第一时间段内第一小区的信号质量分析是否因为信号质量变差而发生连接失败。在因为信号质量变差而发生连接失败的情况下，第二网络设备能够根据该第一时间段内第一小区的信号质量进行网络优化。例如第二网络设备可以提高第一小区的信号质量，以保证后续终端设备与第二网络设备的正常通信，避免发生连接失败。
结合第一方面、第二方面或第三方面，在一种可能的设计中，第一信息包括第一小区的邻区中满足预设条件的小区的标识。
结合第一方面、第二方面或第三方面，在一种可能的设计中，第一信息包括触发小区列表，触发小区列表包括满足预设条件的小区的标识。
基于该可能的设计，第二网络设备能够根据第一数量与预设的数量阈值分析是否因为终端设备未触发上报而发生连接失败，在因为终端设备未触发上报而发生连接失败的情况下，第二网络设备可以根据终端设备未触发上报的原因进行网络优化；例如，第二网络设备可以降低终端设备触发上报的门限(如减小预设的数量阈值、减小TTT的时长等)，以提高终端设备处发上报的频率，进而使得终端设备能够提前上报测量结果，进而避免终端设备发生连接失败。在不是由于终端设备未触发上报而发生连接失败的情况下，第二网络设备可以排除该终端设备未触发上报的原因，以提高第二网络设备获取发生连接失败的正确原因的几率，从而使得第二网络设备能够根据该正确原因进而进行网络优化。
第四方面，提供了一种通信装置用于实现各种方法。该通信装置可以为第一方面中的终端设备，或者终端设备中包含的装置，比如芯片或芯片系统；或者，该通信装置可以为第二方面中的第一网络设备，或者第一网络设备中包含的装置，比如芯片或芯片系统；或者，该通信装置可以为第三方面中的第二网络设备，或者第二网络设备中包含的装置，比如芯片或芯片系统。所述通信装置包括实现方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行 相应的软件实现。该硬件或软件包括一个或多个与功能相对应的模块或单元。
在一些可能的设计中，该通信装置可以包括处理模块和收发模块。该处理模块，可以用于实现上述任一方面及其任意可能的实现方式中的处理功能。收发模块可以包括接收模块和发送模块，分别用以实现上述任一方面及其任意可能的实现方式中的接收功能和发送功能。
在一些可能的设计中，收发模块可以由收发电路，收发机，收发器或者通信接口构成。
第五方面，提供了一种通信装置，包括：处理器和存储器；该存储器用于存储计算机指令，当该处理器执行该指令时，以使该通信装置执行任一方面所述的方法。该通信装置可以为第一方面中的终端设备，或者终端设备中包含的装置，比如芯片或芯片系统；或者，该通信装置可以为第二方面中的第一网络设备，或者第一网络设备中包含的装置，比如芯片或芯片系统；或者，该通信装置可以为第三方面中的第二网络设备，或者第二网络设备中包含的装置，比如芯片或芯片系统。
第六方面，提供一种通信装置，包括：处理器和通信接口；该通信接口，用于与该通信装置之外的模块通信；所述处理器用于执行计算机程序或指令，以使该通信装置执行任一方面所述的方法。该通信装置可以为第一方面中的终端设备，或者终端设备中包含的装置，比如芯片或芯片系统；或者，该通信装置可以为第二方面中的第一网络设备，或者第一网络设备中包含的装置，比如芯片或芯片系统；或者，该通信装置可以为第三方面中的第二网络设备，或者第二网络设备中包含的装置，比如芯片或芯片系统。
第七方面，提供了一种通信装置，包括：至少一个处理器；所述处理器用于执行存储器中存储的计算机程序或指令，以使该通信装置执行任一方面所述的方法。该存储器可以与处理器耦合，或者，也可以独立于该处理器。该通信装置可以为第一方面中的终端设备，或者终端设备中包含的装置，比如芯片或芯片系统；或者，该通信装置可以为第二方面中的第一网络设备，或者第一网络设备中包含的装置，比如芯片或芯片系统。
在一些可能的设计中，该通信装置包括存储器，该存储器，用于保存必要的程序指令和数据。
在一些可能的设计中，该装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件。
可以理解的是，第四方面至第七方面中任一方面提供的通信装置是芯片时，通信装置的发送动作/功能可以理解为输出或发送信息，通信装置的接收动作/功能可以理解为输入或接收信息。
第八方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序或指令，当其在通信装置或计算机上运行时，使得通信装置或计算机可以执行任一方面所述的方法。
第九方面，提供了一种包含指令的计算机程序产品，当其在通信装置或计算机上运行时，使得该通信装置或计算机可以执行任一方面所述的方法。
其中，第四方面至第九方面中任一种设计方式所带来的技术效果可参见第一方面、第二方面或第三方面中不同设计方式所带来的技术效果，在此不再赘述。
附图说明
图1为本申请提供的一种小区切换的流程示意图；
图2为本申请提供的一种切换失败恢复机制的示意图；
图3为本申请提供的一种网络设备的信号覆盖区域的示意图；
图4为本申请提供的一种通信系统的结构示意图；
图5为本申请提供的一种通信装置的结构示意图；
图6为本申请提供的一种数据传输方法的流程示意图；
图7为本申请提供的又一种网络设备的信号覆盖区域的示意图；
图8为本申请提供的一种第一信号覆盖区域的示意图；
图9为本申请提供的又一种第一信号覆盖区域的示意图；
图10为本申请提供的又一种通信装置的结构示意图；
图11为本申请提供的又一种通信装置的结构示意图。
具体实施方式
在本申请的描述中，除非另有说明，“/”表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B；本申请中的“和/或”仅仅是一种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。
在本申请的描述中，除非另有说明，“多个”是指两个或多于两个。“以下至少一项(个)”或其类似表达， 是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。
另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
在本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念，便于理解。
可以理解，说明书通篇中提到的“实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各个实施例未必指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。可以理解，在本申请的各种实施例中，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
可以理解，在本申请中，“…时”以及“若”均指在某种客观情况下会做出相应的处理，并非是限定时间，且也不要求实现时要有判断的动作，也不意味着存在其它限定。
可以理解，本申请实施例中的一些可选的特征，在某些场景下，可以不依赖于其他特征，比如其当前所基于的方案，而独立实施，解决相应的技术问题，达到相应的效果，也可以在某些场景下，依据需求与其他特征进行结合。相应的，本申请实施例中给出的装置也可以相应的实现这些特征或功能，在此不予赘述。
本申请中，除特殊说明外，各个实施例之间相同或相似的部分可以互相参考。在本申请中各个实施例、以及各实施例中的各个实施方式/实施方法/实现方法中，如果没有特殊说明以及逻辑冲突，不同的实施例之间、以及各实施例中的各个实施方式/实施方法/实现方法之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例、以及各实施例中的各个实施方式/实施方法/实现方法中的技术特征根据其内在的逻辑关系可以组合形成新的实施例、实施方式、实施方法、或实现方法。以下所述的本申请实施方式并不构成对本申请保护范围的限定。
为了方便理解本申请实施例的技术方案，首先给出本申请相关技术的简要介绍如下。
1、小区切换(hand-over)：
示例性的，在第五代(5th generation，5G)或新无线(new radio，NR)系统中，小区切换的流程可以包括如图1所示的步骤S101-S109：
步骤S101、终端设备的源基站(也可以称为切换前的服务基站)可以向终端设备发送测量配置。相应的，终端设备接收到来自源基站的测量配置。
可选的，测量配置可以包括测量对象(如服务小区、或邻区)、测量上报的触发事件等。
示例性的，该触发事件可以包括事件A1、事件A2、事件A3、事件A4、事件A5等。其中，事件A1为服务小区的信号质量大于第一预设阈值；事件A2为服务小区的信号质量小于第二预设阈值；事件A3为邻区的信号质量大于服务小区的信号质量；事件A4为邻区的信号质量大于第三预设阈值；事件A5为服务小区的信号质量小于第二预设阈值，且邻区的信号质量大于第三预设阈值。
步骤S102、终端设备根据接收到的测量配置，对测量对象进行测量。
可选的，若终端设备在一定时间段内测得的一个测量对象的测量结果满足测量上报的触发事件，会触发终端设备进行上报。
可选的，在一定时间段内，一个小区的测量结果满足测量上报的触发事件时，可以将该小区的标识加入触发小区列表(cells triggered list)中。
示例性的，一定时间段是由源基站配置的。该一定时间段也可以称为触发时间(time to trigger，TTT)。
其中，测量结果是由层1(如物理(physical，PHY)层)测量，且由层3(如无线资源控制(radio resource control，RRC)层)滤波后获得的结果。
步骤S103、终端设备向源基站发送测量报告。相应的，源基站接收来自终端设备的测量报告。
步骤S104、源基站接收到测量报告后基于测量报告确定目标小区。
例如，源基站对测量报告中的测量结果进行评估，进而确定目标小区。
步骤S105、源基站向目标小区所属的目标基站发送切换请求。相应的，目标基站接收来自源基站的切换请求。
示例性的，切换请求包括目标小区的标识(indentity，ID)等切换所需的信息。
步骤S106、目标基站进行准入控制。
可选的，准入控制可以理解为判断是否支持终端设备接入到目标基站。
在支持终端设备接入到目标基站的情况下，执行S107：
步骤S107、目标基站向源基站发送切换确认信息。相应的，源基站接收来自目标基站的切换确认信息。
示例性的，切换确认信息包括与目标小区相关的RRC重配置(reconfiguration)信息(如目标小区的ID等)。
步骤S108、源基站向终端设备转发切换确认信息。相应的，终端设备接收来自源基站的切换确认信息。
步骤S109、终端设备根据切换确认信息执行切换。
示例性的，终端设备可以根据RRC重配置信息执行RRC重配置。在RRC重配置执行结束后，终端设备向目标基站发送RRC重配置成功的信息。相应的，目标基站接收来自终端设备的RRC重配置成功的信息。此时，可以认为终端设备无线接入网(radio access network，RAN)侧切换成功。
可选的，本申请中的切换泛指RRC连接状态下的网络设备控制与终端设备控制的切换、小区变更等。
2、无人驾驶飞行器(uncrewed aerial vehicle，UAV)的小区切换：
UAV作为一种新型的飞行器，以其灵活方便的特点得到普及。同时，蜂窝网络能够为UAV提供广泛的覆盖、高可靠性、高安全性、连续的移动性等特性支撑。
UAV的通信环境与传统终端设备(如手机等)存在较大区别。UAV一般处于网络设备的上方，以视距(line of sight，LOS)径通信为主，因此，相较于传统终端设备，UAV能够接收到更多网络设备的信号。此外，由于网络设备是向地面方向发射电磁波，UAV接收到的信号通常是地面反射的电磁波或波束的旁瓣，因此UAV接收到的信号的强度小于传统终端设备接收到的信号的强度。
从而，若将传统终端设备的小区切换直接应用到UAV的小区切换中，会导致UAV在小区切换的过程中，更多、更频繁的进行测量及上报。
基于上述现象，长期演进(long term evolution，LTE)系统和5G系统对UAV的小区切换进行了如下增强：在小区切换过程中，若UAV在TTT内测得的一个邻区的测量结果满足测量上报的触发事件，将该小区的标识加入触发小区列表，并且在触发小区列表中的小区标识的数量满足预设的数量阈值的情况下，触发UAV进行上报。
3、连接失败恢复机制：
连接失败恢复机制指终端设备发生连接失败时，重新建立RRC连接(或者说进行RRC重建立)。即重新建立终端设备与网络设备的RRC连接，进而恢复终端设备的业务连接。其中，连接失败可以包括无线链路失败(radio link failure，RLF)、切换失败等。
4、自组织网络(self orginazing network，SON)：
SON指网络能够自行分析网络中的数据，并自主完成相应的网络配置与优化。SON包括自配置、自优化、小区失效的监测与优化三个功能。自配置功能可以包括接口自配置功能和自动更新邻区的功能。自优化功能可以包括移动性鲁棒优化(mobility robustness optimization，MRO)、移动性复杂均衡、随机接入优化、以及物理小区标识(physical cell identifier，PCI)的冲突检测与优化。
示例性的，MRO可以用于检测和纠正以下问题：
由于LTE系统内或NR系统内切换过晚造成的连接失败；由于无线接入技术(radio access technology，RAT)间切换过晚造成的连接失败；不必要的RAT间切换；RTA间的乒乓(Inter-RAT ping-pong)切换；系统内的乒乓(Inter-system ping-pong)切换等。
示例性的，在MRO技术中，如图2所示，在终端设备与网络设备1之间发生RLF的情况下，终端设备会生成RLF报告，并重新建立RRC连接(图2中以建立终端设备与网络设备2的连接为例)。在与网络设备2建立RRC连接后，终端设备向网络设备2发送该RLF报告，网络设备2接收来自终端设备的RLF报告，生成RLF指示信息，并向网络设备1发送RLF指示信息。
其中，RLF报告可以包括以下至少一项：最后一个服务小区的小区全球标识(cell global identifier， CGI)(或该小区的PCI和频率)、终端设备尝试RRC重建立的小区的CGI、终端设备最后一次切换初始化时所在小区的CGI、从终端设备上次切换初始化至发生连接失败之间的时长、指示连接失败的原因是RLF或是切换失败、最后一个服务小区为终端设备分配的小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)、终端设备检测到的最后一个RLF的RLF触发器、从连接失败到终端设备发送RLF报告之间的时长、无线测量量。
RLF指示信息可以包括以下至少一项：发生RLF之前终端设备连接的小区的PCI、终端设备尝试RRC重建立的小区的CGI、终端设备在发生RLF之前的小区中的C-RNTI、短媒体接入控制标识(short media access control-identifier，short MAC-I)、RLF报告、RRC重建立的原因。
在UAV场景下，由于空中的通信环境与地面的通信环境存在差异，因此UAV在移动的过程中，在垂直方向上接收到的信号会出现陡降。
示例性的，如图3所示，垂直方向上A点至C点之间的区域是网络设备1的信号覆盖区域，垂直方向上B点至D点之间的区域是网络设备2的信号覆盖区域。UAV从A点移动到B点的过程中由网络设备1为其提供服务。UAV从B点移动到C点的过程中，虽然能够同时接收到网络设备1与网络设备2的信号，但是由于网络设备1的信号质量并未降低，因此在UAV从B点移动到C点的过程中，依然由网络设备1为其提供服务。UAV从C点移动到D点的过程中，由于此时UAV所在的位置超出了网络设备1的信号覆盖区域，造成网络设备1的信号质量突然降低。而在网络设备1的信号质量突然降低的过程中，终端设备未能提前上报测量结果，致使网络设备1无法及时根据该测量结果确定终端设备需要进行切换，以致于造成UAV发生连接失败。
然而，目前的SON技术并不适用于UAV在移动过程中发生连接失败的场景。即，基于目前的SON技术在该场景下无法进行网络优化。
有鉴于此，本申请提出一种数据传输方法，在终端设备在垂直方向具有移动速度的场景下，能够帮助网络设备针对移动性相关问题进行网络优化。其中，网络优化的可以包括基于场景的检测(如分析原因)、基于场景的优化。
本申请实施例的技术方案可用于各种通信系统，该通信系统可以为第三代合作伙伴计划(third generation partnership project，3GPP)通信系统，例如，LTE系统、NR系统等5G系统、卫星通信系统、非陆地网络(non-terrestrial networks，NTN)系统、或者LTE和5G混合组网的系统、或者设备到设备(device-to-device，D2D)通信系统、机器到机器(machine to machine，M2M)通信系统、物联网(Internet of Things，IoT)，以及未来演进的通信系统。该通信系统也可以为非3GPP通信系统，不予限制。
本申请实施例的技术方案可以应用于各种通信场景，例如可以应用于以下通信场景中的一种或多种：增强移动宽带(enhanced mobile broadband，eMBB)、超可靠低时延通信(ultra reliable low latency communication，URLLC)、机器类型通信(machine type communication，MTC)、大规模机器类型通信(massive machine type communications，mMTC)、D2D、和IoT等通信场景。
其中，上述适用本申请的通信系统和通信场景仅是举例说明，适用本申请的通信系统和通信场景不限于此，本申请提供的通信系统和通信场景对本申请的方案不造成任何限定，在此统一说明，以下不再赘述。
参见图4，为本申请提供的一种示例性的通信系统。该通信系统包括至少两个网络设备和至少一个终端设备。可选的，不同网络设备之间可以相互通信。
其中，至少两个网络设备可以包括第一网络设备和第二网络设备。终端设备可以先与第二网络设备连接，或者说可以先连接至第二网络设备。后续终端设备在移动过程中发生连接失败，并重新建立RRC连接，连接至第一网络设备。即，第一网络设备为发生连接失败后终端设备重新连接的网络设备，第二网络设备为发生连接失败前终端设备连接的网络设备。其中，在移动过程中终端设备在垂直方向上存在移动速度。
示例性的，终端设备与第二网络设备连接可以理解为终端设备与第二网络设备中的第一小区连接，也就是说，第一小区是发生连接失败前终端设备的服务小区。
终端设备与第一网络设备连接可以理解为终端设备与第一网络设备中的第二小区连接，也就是说，第二小区是重新连接后终端设备的服务小区。
可选的，终端设备和网络设备之间可以通过Uu接口进行通信。
可选的，网络设备是一种将终端设备接入到无线网络的设备，可以是LTE或演进的LTE系统(LTE- Advanced，LTE-A)中的演进型基站(evolutional Node B，eNB或eNodeB)，如传统的宏基站eNB和异构网络场景下的微基站eNB；或者可以是5G系统中的下一代节点B(next generation node B，gNodeB或gNB)；或者可以是6G系统中的下一代基站；或者可以是传输接收点(transmission reception point，TRP)；或者可以是未来演进的公共陆地移动网络(public land mobile network，PLMN)中的基站；或者可以是宽带网络业务网关(broadband network gateway，BNG)、汇聚交换机或非3GPP接入设备；或者可以是云无线接入网络(cloud radio access network，CRAN)中的无线控制器；或者可以是WiFi系统中的接入节点(access point，AP)；或者可以是无线中继节点或无线回传节点；或者可以是IoT中实现基站功能的设备、V2X中实现基站功能的设备、D2D中实现基站功能的设备、或者M2M中实现基站功能的设备，本申请实施例对此不作具体限定。
示例性的，本申请实施例中的基站可以包括各种形式的基站，例如：宏基站，微基站(也称为小站)，室内站，中继站，接入点，施主节点等，本申请实施例对此不作具体限定。
可选的，在具体实现时，网络设备可以指完成基站部分功能的模块或单元。例如集中单元(central unit，CU)，或者，网络设备可以是CU和分布式单元(distributed unit，DU)组成的。CU和DU可以根据无线网络的协议层划分。例如，RRC协议层、业务数据适配协议(service data adaptation protocol，SDAP)层以及分组数据汇聚协议(packet data convergence protocol，PDCP)层的功能设置在CU中，而无线链路控制(radio link control，RLC)层，MAC层，PHY层的功能设置在DU中。
可以理解，对CU和DU处理功能按照这种协议层的划分仅仅是一种举例，也可以按照其他的方式进行划分，本申请对此不作具体限定。
在一些实施例中，CU可以由CU控制面(CU control plane，CU-CP)和CU用户面(CU user plane，CU-UP)组成。
可选的，终端设备可以是指一种具有无线收发功能的用户侧设备，可以向网络设备发送信号，或者接收来自网络设备的信号。终端设备也可以称为用户设备(user equipment，UE)、终端、接入终端、用户单元、用户站、移动站(mobile station，MS)、远方站、远程终端、移动终端(mobile terminal，MT)、用户终端、无线通信设备、用户代理或用户装置等。终端可以广泛应用于各种场景，例如可以是IoT、D2D、M2M、MTC、5G网络、或者未来演进的PLMN中的无线终端。终端设备可以部署在空中(例如飞机、气球和卫星上等)。
示例性的，终端设备可以是无人机、直升机、机械臂、IoT设备(例如，传感器，电表，水表等)、V2X设备、无线局域网(wireless local area networks，WLAN)中的站点(station，ST)、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、可穿戴设备(也可以称为穿戴式智能设备)、平板电脑或带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、智能家居(smarthome control system，SCS)中的无线设备、智能办公(office automation，OA)中的无线设备、具有无人机对无人机(UAV to UAV，U2U)通信能力的无人机等等。
在本申请的实施例中，网络设备的功能也可以由网络设备中的模块(如芯片)来执行，或者也可以由包含有网络设备功能的控制子系统来执行。其中，包含有网络设备功能的控制子系统可以是智能电网、工业控制、智能交通、智慧城市等上述应用场景中的控制中心。终端设备的功能也可以由终端设备中的模块(如芯片或调制解调器)来执行，或者也可以由包含有终端设备功能的装置来执行。
需要说明的是，本申请实施例描述的通信系统是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
可选的，本申请涉及的终端设备或网络设备的相关功能可以通过图5中的通信装置50来实现。参见图5，该通信装置50包括一个或多个处理器501。进一步的，该通信装置50还可以包括通信总线502，以及至少一个通信接口(图5中仅是示例性的，以通信装置50包括通信接口504，以及一个处理器501为例进行说明)。可选的，通信装置50还可以包括存储器503。
处理器501可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路、或用于处理数据(例如计算机程序指令)的处理核。处理器可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。
在具体实现中，作为一种实施例，处理器501可以包括一个或多个CPU，例如图5中的CPU0和CPU1。
通信总线502可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图5中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。该通信总线502用于连接通信装置50中的不同组件，使得通信装置50中的不同组件之间可以进行通信交互。
通信接口504，可以是收发模块，用于与其他设备或通信网络通信，该通信网络例如可以为以太网(Ethernet)，RAN，无线局域网(wireless local area networks，WLAN)等。例如，所述通信接口504可以是收发器、收发机一类的装置。或者，所述通信接口504也可以是位于处理器501内的收发电路，用以实现处理器的信号输入和信号输出。
存储器503可以是具有存储功能的装置。例如可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信总线502与处理器相连接。存储器也可以和处理器集成在一起。
其中，存储器503用于存储执行本申请方案的计算机执行指令，并由处理器501来控制执行。处理器501用于执行存储器503中存储的计算机执行指令，从而实现本申请实施例中提供的方法。
或者，可选的，本申请实施例中，也可以是处理器501执行本申请下述实施例提供的方法中的处理相关的功能，通信接口504负责与其他设备或通信网络通信，本申请实施例对此不作具体限定。
可选的，本申请实施例中的计算机执行指令也可以称之为应用程序代码，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，通信装置50还可以包括输出设备505和输入设备506。输出设备505和处理器501通信，可以以多种方式来显示信息。例如，输出设备505可以是液晶显示器(liquid crystal display，LCD)，发光二极管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备506和处理器501通信，可以以多种方式接收用户的输入。例如，输入设备506可以是鼠标、键盘、触摸屏设备或传感设备等。
需要说明的是，图5中示出的组成结构并不构成对该通信装置的限定，除图5所示部件之外，该通信装置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。
下面将结合附图，对本申请实施例提供的数据传输方法进行展开说明。可以理解的，本申请实施例中，网络设备可以执行本申请实施例中的部分或全部步骤，这些步骤或操作仅是示例，本申请实施例还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照本申请实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部操作。
如图6所示，为本申请提供的一种数据传输方法，该数据传输方法包括如下步骤：
S601、终端设备确定第一信息。
其中，第一信息指示终端设备在移动过程中发生了连接失败，且移动过程中终端设备在垂直方向上存在移动速度。
可选的，连接失败可以包括RLF或切换失败。
可选的，第一信息包括以下至少一项：
(1)、发生连接失败时终端设备的位置信息。
可选的，终端设备的位置信息可以为终端设备在二维空间中的绝对位置。或者，也可以为在二维空间中终端设备相对于第二网络设备的位置。
可选的，在终端设备的位置信息为终端设备在二维空间中的绝对位置的情况下，终端设备的位置信息可以包括终端设备在经纬度坐标系中的坐标。
示例性的，可以通过协议中(例如3GPP协议)规范的位置信息(location information)的相关方式表示终端设备的位置信息。
可选的，终端设备的位置信息为二维空间中终端设备相对于第二网络设备的位置的情况下，终端设备的位置信息可以包括终端设备相对于第二网络设备的位置。
示例性的，终端设备的位置信息可以通过终端设备和第二网络设备在水平方向的相对距离表示。
可选的，终端设备的位置信息可以由终端设备确定，或者，由第二网络设备确定并通知终端设备。
示例性的，终端设备可以通过其与第二网络设备之间的数据传输时间，计算其与第二网络设备在水平方向的相对距离，进而确定其位置信息。
或者，第二网络设备可以根据终端设备在经纬度坐标系中的坐标计算其与终端设备在水平方向的相对距离，进而确定终端设备的位置信息，并将终端设备的位置信息发送至终端设备。
(2)、发生连接失败时终端设备的移动速度。
可选的，终端设备的移动速度可以是终端设备在垂直方向上的速度，或者也可以是终端设备在水平方向上的速度。
(3)、发生连接失败时终端设备的高度信息。
作为一种实现的可能，终端设备的高度信息可以包括终端设备相对于第二网络设备的高度。例如，终端设备和第二网络设备的高度差。
示例性的，在终端设备的高度为50米，第二网络设备的高度为60米的情况下，终端设备相对于第二网络设备的高度可以为-10米。在终端设备的高度为60米，第二网络设备的高度为50米的情况下，终端设备相对于第二网络设备的高度可以为10米。
作为另一种实现的可能，终端设备的高度信息可以包括终端设备的绝对高度，如海拔高度。
(4)、终端设备的移动轨迹。
示例性的，移动轨迹可以是终端设备或第二网络设备预先设置的。终端设备可以根据该移动轨迹进行移动。
(5)、第一时间段内第一小区的信号质量。其中，第一时间段的结束时刻为发生连接失败的时刻。
一种可能的实现方式中，第一时间段的起始时刻可以为预设时刻。例如，预设时刻可以是发生连接失败的时刻之前的第10秒(second，s)。
另一种可能的实现方式中，第一时间段的起始时刻可以根据造成连接失败的信号质量阈值确定。
可选的，将第一小区的信号质量小于造成连接失败的信号质量阈值的时刻确定为第一时间段的起始时刻。
示例性的，在A时刻第一小区的信号质量小于造成连接失败的信号质量阈值的情况下，可以将A时刻至B时刻(不包括B时刻)内的任一时刻确定为第一时间段的起始时刻。其中，B时刻是发生连接失败的时刻，A时刻为发生连接失败前的时刻。例如，第一时间段的时长可以是10s。
需要说明的是，上述仅是对第一时间段的示例性描述，实际上，第一时间段的时长可以更长，或者更短，例如，第一时间段的时长可以为5s，本申请不作具体限制。
可选的，在第一时间段内，终端设备可以以秒或毫秒(milli second，ms)为周期确定第一小区的信号质量，例如，每秒或每毫秒确定一次第一小区的信号质量，本申请在此不做限制。
(6)、触发小区列表，触发小区列表包括满足预设条件的小区的标识。
可选的，预设条件可以是测量上报的触发事件。例如，预设条件可以是事件A1、事件A2、事件A3、事件A4、事件A5、事件H1、事件H2等。其中，事件A1至A5可参考前文中的定义，事件H1为终端设备的高度大于第四预设阈值；事件H2为终端设备的高度小于第五预设阈值。
(7)、第一小区的邻区中满足预设条件的小区的标识。
可选的，满足预设条件的小区的标识可以组成触发小区列表。
(8)、终端设备最后一次切换的切换类型。其中，切换类型为垂直切换。
可选的，最后一次切换可以理解为发生连接失败前终端设备本应该执行但实际未执行的切换。
可选的，连接失败可以是终端设备本应该进行小区切换但实际没来得及切换(即切换过晚)导致的。其中，终端设备本应该进行的切换可以包括：终端设备向第二网络设备发送测量报告，第二网络设备根 据该测量报告确定目标网络设备，并向目标网络设备发送切换请求。目标网络设备接收到切换请求后，进行准入控制。在终端设备能够接入目标网络设备的情况下，目标网络设备向第二网络设备发送切换确认信息。其中该切换确认信息包括终端设备的RRC重配置信息。第二网络设备将切换确认信息转发至终端设备。终端设备根据切换确认信息执行切换。然而，由于终端设备未能提前上报测量报告、第二网络设备未能及时根据测量报告确定终端设备需要进行切换等原因，造成了终端设备未能及时切换，进而发生连接失败。
垂直切换可以理解为切换前后终端设备的服务小区(或者说源小区和目标小区)在垂直方向上的信号覆盖区域不同。例如，第二网络设备与第三网络设备在垂直方向上的信号覆盖区域的上限高度不同；或者，第二网络设备与第三网络设备在垂直方向上的信号覆盖区域的下限高度不同。
示例性的，如图7中的(a)所示，第二网络设备在垂直方向上的信号覆盖区域为[M，O]，第三网络设备在垂直方向上的信号覆盖区域为[N，P]。在终端设备向上移动时，从M点移动至O点的过程中，由第二网络设备为终端设备提供服务，即终端设备与第二网络设备连接。由于第三网络设备在垂直方向上的信号覆盖区域的上限高度大于第二网络设备在垂直方向上的信号覆盖区域的上限高度，从O点移动至P点的过程中，因此需要由第三网络设备为其提供服务，即终端设备需与第三网络设备连接。因此在临近O点，或者在O点时，终端设备需要从第二网络设备切换至第三网络设备。其中该切换的类型可以称为垂直切换。
或者，如图7中的(b)所示，第二网络设备在垂直方向上的信号覆盖区域为[T，R]，第三网络设备在垂直方向上的信号覆盖区域为[S，Q]。在终端设备向下移动时，从R点移动至T点的过程中，由第二网络设备为终端设备提供服务，即终端设备与第二网络设备连接。由于第三网络设备在垂直方向上的信号覆盖区域的下限高度小于第二网络设备在垂直方向上的信号覆盖区域的下限高度，从T点移动至S点的过程中，因此需要由第三网络设备为其提供服务，即终端设备需与第三网络设备连接。因此在临近T点，或者在T点时，终端设备需要从第二网络设备切换至第三网络设备。其中该切换的类型可以称为垂直切换。
基于该方案，第二网络设备根据该切换类型确定：终端设备发生连接失败的场景为移动过程中，终端设备在垂直方向上具有移动速度。例如，终端设备在垂直方向上移动。进而能够根据该场景进行网络优化，以实现终端设备在垂直方向上具有移动速度的移动过程中发生连接失败的场景下的网络优化。
S602、终端设备向第一网络设备发送第一信息。相应的，第一网络设备接收来自终端设备的第一信息。
可选的，终端设备可以在与第一网络设备建立连接后，向第一网络设备发送第一信息。
可选的，第一信息可以携带在RLF报告中。
S603、第一网络设备向第二网络设备发送第二信息。相应的，第二网络设备接收来自第一网络设备的第二信息。
可选的，第二信息可以用于第二网络设备分析发生连接失败的原因；和/或，第二信息可以用于第二网络设备基于连接失败进行网络优化。
可选的，第一网络设备接收到第一信息后，向第二网络设备发送第二信息。或者说，第一网络设备向第二网络设备发送第二信息的动作可以由第一网络设备收到第一信息触发。
可选的，第二信息可以携带在RLF指示信息中。
其中，第二信息包括以下至少一项：
(1)、第一网络设备相对于第二网络设备的位置。
可选的，第一网络设备相对于第二网络设备的位置可以理解为在三维空间中，第一网络设备相对于第二网络设备的位置。
作为一种可能的实现，第一网络设备相对于第二网络设备的位置可以包括第一网络设备相对于第二网络设备的高度。
示例性的，在第一网络设备的高度为50米，第二网络设备的高度为60米的情况下，第一网络设备相对于第二网络设备的高度可以为-10米。在第一网络设备的高度为60米，第二网络设备的高度为50米的情况下，第一网络设备相对于第二网络设备的高度可以为10米。
作为另一种可能的实现，第一网络设备相对于第二网络设备的位置可以包括第一网络设备相对于第二网络设备三维坐标。
示例性的，以三维坐标包括经度、维度、高度为例；在第一网络设备的三维坐标为东经30度、南纬30度、高度50米，第二网络设备的三维坐标为东经31度、南纬31度、高度60米的情况下，第一网络设备相对于第二网络设备的位置可以为西经1度、北纬1度、高度-10米。
(2)、第一网络设备在垂直方向上的第一信号覆盖区域。其中，发生连接失败时终端设备位于第一信号覆盖区域内。
可选的，由于发生连接失败时终端设备位于第一信号覆盖区域内，因此，第一信号覆盖区域可以理解为终端设备容易发生连接失败的区域。
示例性的，第一信号覆盖区域的上限高度可以为发生连接失败的时刻终端设备所处的高度。如图8中的(a)所示，E点为发生连接失败的时刻终端设备所处的高度，因此为第一信号覆盖区域的上限高度。此外，F点为第一信号覆盖区域的下限高度，即E点至F点之间在范围为第一信号覆盖区域。
或者，第一信号覆盖区域的的下限高度可以为发生连接失败的时刻终端设备所处的高度。如图8中的(b)所示，E点为发生连接失败的时刻终端设备所处的高度，因此为第一信号覆盖区域的下限高度。此外G点为第一信号覆盖区域的上限高度，即E点至G点之间在垂直方向上的范围为第一信号覆盖区域。
或者，发生连接失败的时刻终端设备所处的高度在第一信号覆盖区域内。如图8中的(c)所示，E点为发生连接失败的时刻终端设备所处的高度，G点为第一信号覆盖区域的上限高度，F点为第一信号覆盖区域的下限高度，因此F点至G点之间在垂直方向上的范围为第一信号覆盖区域。
可选的，第一信号覆盖区域位于第一网络设备的信号覆盖区域内。第一信号覆盖区域的上限高度小于或等于第一网络设备的信号覆盖区域的上限高度；第一信号覆盖区域的下限高度小于或等于第一网络设备的信号覆盖区域的下限高度。
示例性的，以发生连接失败时刻终端设备所处的高度在第一信号覆盖区域内为例，在发生连接失败时刻终端设备所处的高度为55米，第一网络设备的信号覆盖区域为[5，100]米的情况下，可以将第一网络设备的信号覆盖区域中，[50，60]米的高度范围内的信号覆盖区域确定为第一信号覆盖区域。
示例性的，第一网络设备在垂直方向上的信号覆盖区域可以在部署第一网络设备时，通过路测确定。
(3)、第二时间段内第二小区的信号强度。第二时间段包括终端设备连接到第二小区的时刻。
可选的，终端设备连接到第二小区的时刻可以理解为，终端设备与第二小区连接成功的时刻。
可选的，第二时间段的起始时刻可以是发生连接失败的时刻。
可选的，第二时间段的结束时刻小于或等于预设的时刻阈值。例如，预设的时刻阈值可以是发生连接失败后的第10s。
需要说明的是，上述仅是对第二时间段的示例性描述，并不代表第二时间段的时长仅为10s，实际上，第二时间段的时长可以更长，或者更短，本申请不作具体限制。
可选的，在第二时间段内，终端设备或第一网络设备可以以秒或毫秒为周期确定第二小区的信号强度，例如，每秒或每毫秒确定一次第二小区的信号强度，本申请在此不做限制。
可选的，第二时间段内第二小区的信号强度的确定方式可以包括如下两种：
作为一种可能的实现，第二时间段内第二小区的信号强度可以由终端设备确定并通知第一网络设备。
示例性的，第一网络设备可以向终端设备发送第一指示信息，其中第一指示信息指示终端设备测量第二时间段内第二小区的信号强度。终端设备根据第一指示信息，测量第二时间段内第二小区的信号强度，并上报至第一网络设备。
作为另一种可能的实现，第一网络设备可以根据第二时间段内终端设备所处的位置，估计第二时间段内第二小区的信号强度。
示例性的，第一网络设备根据第二时间段内其与终端设备之间的距离估计第二时间段内第二小区的信号强度。例如，第一网络设备根据第二时间段内其与终端设备之间的距离，获取信号传播过程中的路径损耗，进而确定第二时间段内第二小区的信号强度。
可选的，终端设备在第二时间段的结束时刻向第一网络设备发送第二时间段内第二小区的信号强度。
(4)、第一信息。其中，第一信息可参考上述步骤S601中的相关描述，在此不再赘述。
S604、第二网络设备根据第二信息进行处理。
作为第一种可能的实现，第二信息包括第一信息，且第一信息包括终端设备的移动轨迹的情况下，第二网络设备可以根据第一信息确定该发生连接失败时终端设备是否处于信号未覆盖的区域。
可选的，在发生连接失败时终端设备处于信号未覆盖的区域的情况下，第二网络设备可以确定是由 于终端设备移动到信号未覆盖的区域造成的连接失败。在发生连接失败时终端设备不处于该信号未覆盖的区域的情况下，第二网络设备可以确定不是由于终端设备移动到信号未覆盖的区域造成的连接失败。
示例性的，在终端设备移动到信号未覆盖的区域而发生连接失败的情况下，第二网络设备可以根据移动轨迹，调整第二网络设备的信号覆盖区域和/或波束指向。以使得第二网络设备的信号覆盖区域包括该信号未覆盖的区域。
基于该可能的实现，第二网络设备可以基于终端设备的移动轨迹分析是否因为终端设备移动到不能提供信号的区域而发生连接失败。在由于终端设备移动到不能提供信号的区域造成的连接失败的情况下，第二网络设备可以根据该原因进行网络优化；在不是由于终端设备移动到不能提供信号的区域造成的连接失败的情况下，第二网络设备可以排除终端设备移动到不能提供信号覆盖的区域而发生连接失败的情况，以提高第二网络设备获取发生连接失败的正确原因的几率，从而使得第二网络设备能够根据该正确原因进行网络优化。
可选的，第二网络设备还可以根据终端设备的移动轨迹确定发生连接失败时终端设备是否处于禁飞区。
可选的，在发生连接失败时终端设备处于禁飞区的情况下，第二网络设备可以确定是由于终端设备移动到禁飞区造成的连接失败。在发生连接失败时终端设备不处于该信号未覆盖的区域的情况下，第二网络设备可以确定不是由于终端设备移动到禁飞区造成的连接失败。
基于该可能的实现，第二网络设备可以基于终端设备的移动轨迹分析是否因为终端设备移动到禁飞区而发生连接失败。在不是由于终端设备移动到禁飞区造成的连接失败的情况下，第二网络设备可以排除终端设备移动到禁飞区而发生连接失败的情况，以提高第二网络设备获取发生连接失败的正确原因的几率，从而使得第二网络设备能够根据该正确原因进行网络优化。
作为第二种可能的实现，第二信息包括第一信息，且第一信息包括第一时间段内第一小区的信号质量的情况下，第二网络设备将第一时间段内第一小区的信号质量与造成连接失败的信号质量阈值进行比较。
第一时间段内第一小区的信号质量小于造成连接失败的信号质量阈值的情况下，第二网络设备确定可能是因为第一时间段内第一小区的信号质量较差而发生连接失败。第一时间段内第一小区的信号质量大于或等于造成连接失败的信号质量阈值的情况下，第二网络设备确定不是因为第一时间段内第一小区的信号质量较差而发生连接失败。
可选的，第一时间段内第一小区的信号质量小于造成连接失败的信号质量阈值的情况下，第二网络设备可以提高第一时间段内第一小区的信号质量。
示例性的，第二网络设备可以通过调整信号的发射功率，以提高第一时间段内第一小区的信号质量。
基于该可能的实现，第二网络设备能够根据第一时间段内第一小区的信号质量分析是否因为信号质量变差而发生连接失败。在因为信号质量变差而发生连接失败的情况下，第二网络设备能够根据该第一时间段内第一小区的信号质量进行网络优化。例如第二网络设备可以提高第一小区的信号质量，以保证后续终端设备与第二网络设备的正常通信，避免发生连接失败。
作为第三种可能的实现，第二信息包括第一信息，且第一信息包括第一小区的邻区中满足预设条件的小区的标识和触发小区列表中的至少一项的情况下，第二网络设备可以对第一数量与预设的数量阈值进行比较。其中预设的数量阈值用于触发终端设备进行上报。
在第一数量小于预设的数量阈值的情况下，第二网络设备确定是因为终端设备未进行上报，即终端设备未及时上报测量报告而发生连接失败。在第一数量大于或等于预设的数量阈值的情况下，第二网络设备确定不是因为终端设备未触发上报而发生连接失败。其中第一数量是满足预设条件的小区的标识的数量。
可选的，在第一数量小于预设的数量阈值的情况下，第二网络设备可以减小预设的数量阈值。或者，第二网络设备可以减小TTT的时长。
基于该可能的实现，第二网络设备能够根据第一数量与预设的数量阈值分析是否因为终端设备未触发上报而发生连接失败，在因为终端设备未触发上报而发生连接失败的情况下，第二网络设备可以根据终端设备未触发上报的原因进行网络优化；例如，第二网络设备可以降低终端设备触发上报的门限(如减小预设的数量阈值、减小TTT的时长等)，以提高终端设备处发上报的频率，进而使得终端设备能够及时上报测量结果，进而避免终端设备发生连接失败。在不是由于终端设备未触发上报而发生连接失败的 情况下，第二网络设备可以排除该终端设备未触发上报的原因，以提高第二网络设备获取发生连接失败的正确原因的几率，从而使得第二网络设备能够根据该正确原因进而进行网络优化。
作为第四种可能的实现，第二信息包括第一网络设备相对于第二网络设备的位置的情况下，第二网络设备可以调整第二网络设备的信号覆盖区域。其中调整后第二网络设备的信号覆盖区域包括第一网络设备最高点的高度。
可选的，第二网络设备可以通过调整其波束指向，实现对第二网络设备的信号覆盖区域的调整。
示例性的，第二网络设备可以根据第一网络设备相对于第二网络设备的高度，调整第二网络设备的波束指向。
或者，第二网络设备可以根据第一网络设备相对于第二网络设备的三维坐标，确定第一网络设备相对于第二网络设备的方向，进而根据该方向调整的波束指向。
基于该可能的实现，由于终端设备的移动过程中，在经过网络设备(如第一网络设备)的最高点时，容易发生连接失败。因此，第二网络设备能够通过调整第二网络设备的波束指向，使得第二网络设备的信号覆盖区域能够包括第一网络设备的最高点的高度，使得在终端设备经过第一网络设备的最高点时，终端设备能够与第二网络设备保持通信，从而能够及时向第二网络设备发送测量报告，进而第二网络设备能够及时指示切换，以避免发生连接失败。
作为第五种可能的实现，第二信息包括第一网络设备相对于第二网络设备的位置的情况下，第二网络设备可以根据第一网络设备相对于第二网络设备的位置，向终端设备发送切换确认信息以指示终端设备执行切换。
可选的，第二网络设备可以根据第一网络设备相对于第二网络设备的位置，确定第一网络设备的最高点所处的位置，进而根据该最高点所处的位置，向终端设备发送切换确认信息。
可选的，第二网络设备可以设置第一触发机制，该第一触发机制中，终端设备移动至第一网络设备的最高点，或临近第一网络设备的最高点时，第二网络设备向终端设备发送切换确认信息。
基于该可能的实现，由于终端设备的移动过程中，在经过网络设备(如第一网络设备)最高点对应的高度时，容易发生连接失败。因此，第二网络设备可以通过设置第一触发机制，在终端设备经过第一网络设备最高点时，无论第二网络设备是否收到来自终端设备测量报告，均向终端设备发送切换确认信息，以避免终端未能提前上报测量结果，而造成的连接失败。
作为第六种可能的实现，第二信息包括第一信号覆盖区域的情况下，第二网络设备可以调整第二网络设备的信号覆盖区域，其中调整后第二网络设备的信号覆盖区域包括第一信号覆盖区域。
可选的，第二网络设备可以通过调整其波束指向，实现对第二网络设备的信号覆盖区域的调整。
可选的，第二网络设备可以根据第一信号覆盖区域的上限高度或下限高度，将第二网络设备的波束指向向上或向下调整。
示例性的，如图9所示，U点为发生连接失败时终端设备所处的高度，第一信号覆盖区域为[X，Y]；因此如图9中的(a)所示，终端设备向上移动的过程中，第二网络设备可以根据第一信号覆盖区域的上限高度X点，将第二网络设备的波束指向向上调整。如图9中的(b)所示，终端设备向下移动的过程中，第二网络设备可以根据第一信号覆盖区域的下限高度Y点，将第二网络设备的波束指向向下调整。
作为第七种可能的实现，第二信息包括第一信号覆盖区域的情况下，第二网络设备可以根据第一信号覆盖区域，向终端设备发送切换确认信息以指示终端设备执行切换。
可选的，终端设备向上移动的过程中，第二网络设备可以设置第二触发机制，该第二触发机制指示在终端设备移动至第一信号覆盖区域的下限高度时，第二网络设备向终端设备发送切换确认信息，该切换确认信息指示终端设备切换至第一网络设备。
或者，终端设备向下移动的过程中，第二网络设备可以设置第三触发机制，该第二触发机制指示在终端设备移动至第一信号覆盖区域的上限高度时，第二网络设备向终端设备发送切换确认信息，该切换确认信息指示终端设备切换至第一网络设备。
示例性的，如图9中的(a)所示，终端设备向上移动的过程中，终端设备移动至第一信号覆盖区域的下限高度Y点时，触发第二触发机制，第二网络设备向终端设备发送切换确认信息，该切换确认信息指示终端设备切换至第一网络设备。
如图9中(b)所示，终端设备向下移动的过程中，终端设备移动至第一信号覆盖区域的上限高度X点时，触发第三触发机制，第二网络设备向终端设备发送切换确认信息，该切换确认信息指示终端设备 切换至第一网络设备。
基于该可能的实现，能够明确终端设备发生连接失败时可能所处的区域，进而第二网络设备根据第一信号覆盖区域进行网络优化，以避免终端未能提前上报测量结果，而造成的连接失败。
基于上述数据传输方法，终端设备可以向第一网络设备发送第一信息，使得第一网络设备能够获知终端设备在垂直方向上具有移动速度，且在移动过程中发生了连接失败，从而使得第一网络设备能够向发生连接失败前终端设备连接的网络设备发送与该连接失败场景相关的信息，帮助发生连接失败前终端设备连接的网络设备针对该场景进行网络优化。
以上均以第二网络设备进行网络优化为例进行的介绍。实际上，还可以由核心网进行网络优化，即第一网络设备接收到第一信息后，向核心网发送第二信息，进而使得核心网能够根据第二信息进行处理，并通知第二网络设备。其中核心网进行网络优化的过程可以参考第二网络设备进行网络优化的过程，本申请不再赘述。
可以理解的是，以上各个实施例中，由网络设备(如第一网络设备或第二网络设备)实现的方法和/或步骤，也可以由可用于该网络设备的部件(例如处理器、芯片、芯片系统、电路、逻辑模块、或软件例如芯片或者电路)实现；由终端设备实现的方法和/或步骤，也可以由可用于该终端设备的部件(例如处理器、芯片、芯片系统、电路、逻辑模块、或软件例如芯片或者电路)实现。
上述主要对本申请提供的方案进行了介绍。相应的，本申请还提供了通信装置，该通信装置用于实现上述各种方法。该通信装置可以为上述方法实施例中的终端设备，或者包含上述终端设备的装置，或者为可用于终端设备的部件，例如芯片或芯片系统；或者，该通信装置可以为上述方法实施例中的网络设备，或者包含上述网络设备的装置，或者为可用于网络设备的部件，例如芯片或芯片系统。该通信装置可以包括用于实现上文中数据传输方法的模块或单元。下文仅对方案的主要步骤进行了描述，具体细节可参考前文方法实施例，下文不再赘述。
可以理解的是，该通信装置为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法实施例对通信装置进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，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。
通信装置图10示出了一种通信装置100的结构示意图。该通信装置100包括处理模块1001和收发模块1002。该通信装置100可以用于实现上述网络设备或终端设备的功能。
在一些实施例中，该通信装置100还可以包括存储模块(图10中未示出)，用于存储程序指令和数据。
在一些实施例中，收发模块1002，也可以称为收发单元用以实现发送和/或接收功能。该收发模块1002可以由收发电路、收发机、收发器或者通信接口构成。
在一些实施例中，收发模块1002，可以包括接收模块和发送模块，分别用于执行上述方法实施例中由网络设备或终端设备执行的接收和发送类的步骤，和/或用于支持本文所描述的技术的其它过程；处理模块1001，可以用于执行上述方法实施例中由网络设备或终端设备执行的处理类(例如确定、生成等)的步骤，和/或用于支持本文所描述的技术的其它过程。
该通信装置100用于实现上述终端设备的功能时：
在一些实施例中，处理模块1001，用于确定第一信息。其中，第一信息指示终端设备在移动过程中发生了连接失败，且移动过程中终端设备在垂直方向上存在移动速度。收发模块1002，用于向第一网络设备发送第一信息。其中，第一网络设备为发生连接失败后终端设备重新连接的网络设备。
可选的，第一信息包括发生连接失败时终端设备的位置信息、移动速度和高度信息中的至少一项。
可选的，位置信息包括终端设备相对于第二网络设备的位置，第二网络设备为发生连接失败前终端设备连接的网络设备；或者，位置信息包括终端设备在经纬度坐标系中的坐标。
可选的，高度信息包括终端设备相对于第二网络设备的高度，或者，高度信息包括终端设备的绝对 高度。
可选的，第一信息包括终端设备的移动轨迹。
可选的，第一信息包括第一时间段内第一小区的信号质量，第一小区为发生连接失败前终端设备的服务小区，第一时间段的结束时刻为发生连接失败的时刻。
可选的，第一信息包括第一小区的邻区中满足预设条件的小区的标识。
可选的，第一信息包括触发小区列表，触发小区列表包括满足预设条件的小区的标识。
可选的，第一信息包括终端设备最后一次切换的切换类型。其中，切换类型为垂直切换。
通信装置100用于实现上述第一网络设备的功能时：
在一些实施例中，收发模块1002，用于接收来自终端设备的第一信息。其中，第一信息指示终端设备在移动过程中发生了连接失败，且移动过程中终端设备在垂直方向上存在移动速度。收发模块1002，还用于向第二网络设备发送第二信息，第二信息包括第一网络设备相对于第二网络设备的位置、第一网络设备在垂直方向上的第一信号覆盖区域、第二时间段内第二小区的信号强度和第一信息中的至少一项。
其中，第二网络设备为发生连接失败前终端设备连接的网络设备；发生连接失败时终端设备位于第一信号覆盖区域内，第二小区为终端设备发生连接失败后重新连接的服务小区，第二时间段包括终端设备连接到第二小区的时刻。
可选的，第一信息包括发生连接失败时终端设备的位置信息、移动速度和高度信息中的至少一项。
可选的，位置信息包括终端设备相对于第二网络设备的位置，第二网络设备为发生连接失败前终端设备连接的网络设备；或者，位置信息包括终端设备在经纬度坐标系中的坐标。
可选的，高度信息包括终端设备相对于第二网络设备的高度，或者，高度信息包括终端设备的绝对高度。
可选的，第一信息包括终端设备的移动轨迹。
可选的，第一信息包括第一时间段内第一小区的信号质量，第一小区为发生连接失败前终端设备的服务小区，第一时间段的结束时刻为发生连接失败的时刻。
可选的，第一信息包括第一小区的邻区中满足预设条件的小区的标识。
可选的，第一信息包括触发小区列表，触发小区列表包括满足预设条件的小区的标识。
可选的，第一信息包括终端设备最后一次切换的切换类型。其中，切换类型为垂直切换。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
通信装置100用于实现上述第二网络设备的功能时：
在一些实施例中，收发模块1002，用于接收来自第一网络设备的第二信息。其中第一网络设备为发生连接失败后终端设备重新连接的网络设备；第二网络设备为发生连接失败前终端设备连接的网络设备。其中，第二信息包括第一网络设备相对于第二网络设备的位置、第一网络设备在垂直方向上的第一信号覆盖区域、第二时间段内第二小区的信号强度和第一信息中的至少一项。处理模块1001，用于根据第二信息进行处理。
其中，发生连接失败时终端设备位于第一信号覆盖区域内，第二小区为终端设备发生连接失败后重新连接的服务小区，第二时间段包括终端设备连接到第二小区的时刻。
可选的，第一信息包括发生连接失败时终端设备的位置信息、移动速度和高度信息中的至少一项。
可选的，位置信息包括终端设备相对于第二网络设备的位置，第二网络设备为发生连接失败前终端设备连接的网络设备；或者，位置信息包括终端设备在经纬度坐标系中的坐标。
可选的，高度信息包括终端设备相对于第二网络设备的高度，或者，高度信息包括终端设备的绝对高度。
可选的，第一信息包括终端设备的移动轨迹。
可选的，第一信息包括第一时间段内第一小区的信号质量，第一小区为发生连接失败前终端设备的服务小区，第一时间段的结束时刻为发生连接失败的时刻。
可选的，第一信息包括第一小区的邻区中满足预设条件的小区的标识。
可选的，第一信息包括触发小区列表，触发小区列表包括满足预设条件的小区的标识。
可选的，第一信息包括终端设备最后一次切换的切换类型。其中，切换类型为垂直切换。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此 不再赘述。
在本申请中，该通信装置100可以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定专用集成电路(application-specific integrated circuit，ASIC)，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
在一些实施例中，当图10中的通信装置100是芯片或芯片系统时，收发模块1002的功能/实现过程可以通过芯片或芯片系统的输入输出接口(或通信接口)实现，处理模块1001的功能/实现过程可以通过芯片或芯片系统的处理器(或者处理电路)实现。
由于本实施例提供的通信装置100可执行上述方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
作为一种可能的产品形态，本申请实施例所述的网络设备或终端设备，还可以使用下述来实现：一个或多个现场可编程门阵列(field programmable gate array，FPGA)、可编程逻辑器件(programmable logic device，PLD)、控制器、状态机、门逻辑、分立硬件部件、任何其它适合的电路、或者能够执行本申请通篇所描述的各种功能的电路的任意组合。
作为一种可能的产品形态，本申请实施例所述的网络设备或终端设备，还可以使用下述来实现：一个或多个现场可编程门阵列(field programmable gate array，FPGA)、可编程逻辑器件(programmable logic device，PLD)、控制器、状态机、门逻辑、分立硬件部件、任何其它适合的电路、或者能够执行本申请通篇所描述的各种功能的电路的任意组合。
作为另一种可能的产品形态，本申请实施例的网络设备或终端设备，可以由一般性的总线体系结构来实现。为了便于说明，参见图11，图11是本申请实施例提供的通信装置1100的结构示意图，该通信装置1100包括处理器1101和收发器1102。该通信装置1100可以为终端设备，或其中的芯片或芯片系统；或者，该通信装置1100可以为网络设备，或其中的芯片或模块。图11仅示出了通信装置1100的主要部件。除处理器1101和收发器1102之外，所述通信装置还可以进一步包括存储器1103、以及输入输出装置(图未示意)。
可选的，处理器1101主要用于对通信协议以及通信数据进行处理，以及对整个通信装置进行控制，执行软件程序，处理软件程序的数据。存储器1103主要用于存储软件程序和数据。收发器1102可以包括射频电路和天线，射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
可选的，处理器1101、收发器1102、以及存储器1103可以通过通信总线连接。
当通信装置开机后，处理器1101可以读取存储器1103中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器1101对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到通信装置时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器1101，处理器1101将基带信号转换为数据并对该数据进行处理。
在另一种实现中，所述的射频电路和天线可以独立于进行基带处理的处理器而设置，例如在分布式场景中，射频电路和天线可以与独立于通信装置，呈拉远式的布置。
在一些实施例中，在硬件实现上，本领域的技术人员可以想到上述通信装置100可以采用图11所示的通信装置1100的形式。
作为一种示例，图10中的处理模块1001的功能/实现过程可以通过图11所示的通信装置1100中的处理器1101调用存储器1103中存储的计算机执行指令来实现。图10中的收发模块1002的功能/实现过程可以通过图11所示的通信装置1100中的收发器1102来实现。
在一些实施例中，本申请实施例还提供一种通信装置，该通信装置包括处理器，用于实现上述任一方法实施例中的方法。
作为一种可能的实现方式，该通信装置还包括存储器。该存储器，用于保存必要的计算机程序和数据。该计算机程序可以包括指令，处理器可以调用存储器中存储的计算机程序中的指令以指令该通信装置执行上述任一方法实施例中的方法。当然，存储器也可以不在该通信装置中。
作为另一种可能的实现方式，该通信装置还包括接口电路，该接口电路为代码/数据读写接口电路，该接口电路用于接收计算机执行指令(计算机执行指令存储在存储器中，可能直接从存储器读取，或可 能经过其他器件)并传输至该处理器。
作为又一种可能的实现方式，该通信装置还包括通信接口，该通信接口用于与该通信装置之外的模块通信。
可以理解的是，该通信装置可以是芯片或芯片系统，该通信装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件，本申请实施例对此不作具体限定。
本申请还提供了一种计算机可读存储介质，其上存储有计算机程序或指令，该计算机程序或指令被计算机执行时实现上述任一方法实施例的功能。
本申请还提供了一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
本领域普通技术人员可以理解，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
可以理解，本申请中描述的系统、装置和方法也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，即可以位于一个地方，或者也可以分布到多个网络单元上。作为单元显示的部件可以是或者也可以不是物理单元。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，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。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可以用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。本申请实施例中,计算机可以包括前面所述的装置。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (26)

  1. 一种数据传输方法，其特征在于，所述方法应用于终端设备，所述方法包括：
    确定第一信息，所述第一信息指示所述终端设备在移动过程中发生了连接失败，且所述移动过程中所述终端设备在垂直方向上存在移动速度；
    向第一网络设备发送所述第一信息，所述第一网络设备为发生所述连接失败后所述终端设备重新连接的网络设备。
  2. 根据权利要求1所述的方法，其特征在于，所述第一信息包括发生所述连接失败时所述终端设备的位置信息、移动速度和高度信息中的至少一项。
  3. 根据权利要求2所述的方法，其特征在于，所述位置信息包括所述终端设备相对于第二网络设备的位置，所述第二网络设备为发生所述连接失败前所述终端设备连接的网络设备；
    或者，所述位置信息包括所述终端设备在经纬度坐标系中的坐标。
  4. 根据权利要求2或3所述的方法，其特征在于，所述高度信息包括所述终端设备相对于第二网络设备的高度，或者，所述高度信息包括所述终端设备的绝对高度。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述第一信息包括所述终端设备的移动轨迹。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述第一信息包括第一时间段内第一小区的信号质量，所述第一小区为发生所述连接失败前所述终端设备的服务小区，所述第一时间段的结束时刻为发生所述连接失败的时刻。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述第一信息包括第一小区的邻区中满足预设条件的小区的标识。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，所述第一信息包括触发小区列表，所述触发小区列表包括满足预设条件的小区的标识。
  9. 一种数据传输方法，其特征在于，所述方法应用于第一网络设备，所述方法包括：
    接收来自终端设备的第一信息，所述第一信息指示所述终端设备在移动过程中发生了连接失败，且所述移动过程中所述终端设备在垂直方向上存在移动速度；
    向第二网络设备发送第二信息，所述第二信息包括所述第一网络设备相对于所述第二网络设备的位置、所述第一网络设备在垂直方向上的第一信号覆盖区域、第二时间段内第二小区的信号强度和所述第一信息中的至少一项；
    其中，所述第二网络设备为发生所述连接失败前所述终端设备连接的网络设备；发生所述连接失败时所述终端设备位于所述第一信号覆盖区域内，所述第二小区为所述终端设备发生所述连接失败后重新连接的服务小区，所述第二时间段包括所述终端设备连接到所述第二小区的时刻。
  10. 根据权利要求9所述的方法，其特征在于，所述第一信息包括发生所述连接失败时所述终端设备的位置信息、移动速度和高度信息中的至少一项。
  11. 根据权利要求10所述的方法，其特征在于，所述位置信息包括所述终端设备相对于第二网络设备的位置，所述第二网络设备为发生所述连接失败前所述终端设备连接的网络设备；
    或者，所述位置信息包括所述终端设备在经纬度坐标系中的坐标。
  12. 根据权利要求10或11所述的方法，其特征在于，所述高度信息包括所述终端设备相对于所述第二网络设备的高度，或者，所述高度信息包括所述终端设备的绝对高度。
  13. 根据权利要求9-12任一项所述的方法，其特征在于，所述第一信息包括所述终端设备的移动轨迹。
  14. 根据权利要求9-13任一项所述的方法，其特征在于，所述第一信息包括第一时间段内第一小区的信号质量，所述第一小区为发生所述连接失败前所述终端设备的服务小区，所述第一时间段的结束时刻为发生所述连接失败的时刻。
  15. 根据权利要求9-14任一项所述的方法，其特征在于，所述第一信息包括第一小区的邻区中满足预设条件的小区的标识。
  16. 根据权利要求9-15任一项所述的方法，其特征在于，所述第一信息包括触发小区列表，所述触发小区列表包括满足预设条件的小区的标识。
  17. 一种数据传输方法，其特征在于，所述方法应用于第二网络设备，所述方法包括：
    接收来自第一网络设备的第二信息，所述第一网络设备为发生连接失败后终端设备重新连接的网络设备；所述第二网络设备为发生所述连接失败前所述终端设备连接的网络设备；
    根据所述第二信息进行处理；
    其中，所述第二信息包括所述第一网络设备相对于所述第二网络设备的位置、所述第一网络设备在垂直方向上的第一信号覆盖区域、第二时间段内第二小区的信号强度和第一信息中的至少一项；其中，发生所述连接失败时所述终端设备位于所述第一信号覆盖区域内，所述第二小区为所述终端设备发生所述连接失败后重新连接的服务小区，所述第二时间段包括所述终端设备连接到所述第二小区的时刻，所述第一信息指示所述终端设备在移动过程中发生了连接失败，且所述移动过程中所述终端设备在垂直方向上存在移动速度。
  18. 根据权利要求17所述的方法，其特征在于，所述第一信息包括发生所述连接失败时所述终端设备的位置信息、移动速度和高度信息中的至少一项。
  19. 根据权利要求18所述的方法，其特征在于，所述位置信息包括所述终端设备相对于第二网络设备的位置，所述第二网络设备为发生所述连接失败前所述终端设备连接的网络设备；
    或者，所述位置信息包括所述终端设备在经纬度坐标系中的坐标。
  20. 根据权利要求18或19所述的方法，其特征在于，所述高度信息包括所述终端设备相对于所述第二网络设备的高度，或者，所述高度信息包括所述终端设备的绝对高度，所述第二网络设备为发生所述连接失败前所述终端设备连接的网络设备。
  21. 根据权利要求17-20任一项所述的方法，其特征在于，所述第一信息包括所述终端设备的移动轨迹。
  22. 根据权利要求17-21任一项所述的方法，其特征在于，所述第一信息包括第一时间段内第一小区的信号质量，所述第一小区为发生所述连接失败前所述终端设备的服务小区，所述第一时间段的结束时刻为发生所述连接失败的时刻。
  23. 根据权利要求17-22任一项所述的方法，其特征在于，所述第一信息包括第一小区的邻区中满足预设条件的小区的标识。
  24. 根据权利要求17-23任一项所述的方法，其特征在于，所述第一信息包括触发小区列表，所述触发小区列表包括满足预设条件的小区的标识。
  25. 一种通信装置，其特征在于，所述通信装置包括处理器；所述处理器，用于运行计算机程序或指令，以使所述通信装置执行如权利要求1-8任一项所述的方法，或者，以使所述通信装置执行如权利要求9-16任一项所述的方法，或者，以使所述通信装置执行如权利要求17-24任一项所述的方法。
  26. 一种计算机可读存储介质，其特征在于，计算机可读存储介质存储有计算机指令或程序，当计算机指令或程序在计算机上运行时，使得如权利要求1-8任一项所述的方法被执行，或者，使得如权利要求9-16任一项所述的方法被执行，或者，使得如权利要求17-24任一项所述的方法被执行。
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