WO2020078418A1 - 用于在不同通信系统间转移场景下的通信方法和装置 - Google Patents

用于在不同通信系统间转移场景下的通信方法和装置 Download PDF

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Publication number
WO2020078418A1
WO2020078418A1 PCT/CN2019/111657 CN2019111657W WO2020078418A1 WO 2020078418 A1 WO2020078418 A1 WO 2020078418A1 CN 2019111657 W CN2019111657 W CN 2019111657W WO 2020078418 A1 WO2020078418 A1 WO 2020078418A1
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Prior art keywords
pdu session
communication system
application
terminal
parameter information
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PCT/CN2019/111657
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English (en)
French (fr)
Inventor
金辉
何彦召
窦凤辉
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from CN201910457353.7A external-priority patent/CN111065133B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to US17/285,151 priority Critical patent/US11979788B2/en
Priority to EP19873677.9A priority patent/EP3855778A4/en
Publication of WO2020078418A1 publication Critical patent/WO2020078418A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a communication method and apparatus for transferring scenarios between different communication systems.
  • the fifth generation (5G) mobile communication technology is an extension of the fourth generation (4G) mobile communication technology. It has the characteristics of high performance, low latency and high capacity. Its maximum data transmission speed can reach Over tens of Gbps, that is, the fifth-generation (5G) network is 1000 times faster than the existing fourth-generation (4G) network. Therefore, when the terminal is on a 4G network and supports a 5G network, the terminal can switch from the 4G network to the 5G network to obtain a higher data transmission speed.
  • the network side entity when the terminal establishes a protocol data unit (protocol data unit (PDU) session) in the 5G network, the network side entity will When the parameter information of the 4G network's public data network (PDN) connection corresponding to the parameter information of the PDU session is sent to the terminal, the PDU session of the terminal in the 5G network can support interworking (interworking). The terminal can transfer between the 5G network and the 4G network without changing the IP address (internet protocol address).
  • the network side entity needs to send the parameter information of the PDU session of the 5G network corresponding to the PDN connection to the terminal, so that the PDN connection can support interoperation.
  • not all PDU sessions in the 5G network support interoperability.
  • For applications that transmit data through PDU sessions that do not support interoperability in the 5G network when the terminal is transferred between the 5G network and the 4G network, there are The quality of the data transmitted by the application may be affected.
  • the present application provides a communication method and apparatus for a transfer scenario between different communication systems.
  • the quality of data transmission of applications running on the terminal can be improved.
  • the first aspect provides a communication method for transferring scenarios between different communication systems, including: a terminal transmits data for a first application using a first protocol data unit PDU session in the first communication system, the first PDU session Interoperability between the first communication system and the second communication system is not supported; the terminal is transferred from the first communication system to the second communication system; the terminal is transferred from the second communication system After returning to the first communication system, the terminal obtains a second PDU session based on at least the first transmission information of the first application, and uses the second PDU session in the first communication system as the The first application transmits data, and the first transmission information includes an identifier of the first application.
  • the first communication system is a fifth generation communication system
  • the second communication system is a fourth generation communication system.
  • the terminal uses the second PDU session to transmit data for the first application according to the first transmission information of the first application. Since the first transmission information includes at least the identifier of the first application, the terminal can meet the requirements of the data transmission quality of the first application in the second PDU session, thereby ensuring that the terminal is transferred from the first communication system to the second communication system, and When transferring from the second communication system back to the first communication system, the data transmission quality of the first application.
  • the terminal when the terminal is transferred from the first communication system to the second communication system and then transferred from the second communication system back to the first communication system, the terminal uses a default PDU session to transmit data for the first application and the The problem that the default PDU session cannot meet the data transmission quality requirements of the first application results in the degradation of the data transmission quality of the first application.
  • the first transmission information further includes: a context of the first PDU session; the terminal transmits at least the first transmission according to the first application
  • the information to obtain the second PDU session includes: the terminal establishing the second PDU session in the first communication system according to the context of the first PDU session.
  • the method of establishing the second PDU session for application data transmission is established according to the context of the first PDU session previously used for the first application data transmission, so that the establishment efficiency of the second PDU session is high.
  • the terminal acquiring the second PDU session according to at least the first transmission information of the first application includes: the terminal according to the first An application identifier to obtain parameter information for establishing a PDU session corresponding to the first application; the terminal according to the parameter information for establishing a PDU session corresponding to the first application in the first communication system To establish the second PDU session.
  • the terminal does not need to save the context of the first PDU session, which saves the memory of the terminal.
  • the terminal acquiring the second PDU session according to at least the first transmission information of the first application includes: the terminal according to the first The identification of the application to obtain parameter information for establishing a PDU session corresponding to the first application; and, if the terminal does not have a third PDU session in the first communication system, the context of the third PDU session
  • the parameter information in includes at least part of the parameter information used to establish the PDU session corresponding to the first application, then the terminal according to the parameter information used to establish the PDU session corresponding to the first application , Establishing the second PDU session in the first communication system;
  • the third PDU session is the second PDU session.
  • the third PDU session as above since the parameter information in the context of the third PDU session as above includes at least part of the parameter information for establishing the PDU session corresponding to the first application, the third PDU session as above The data transmission of the first application matches. Therefore, if the terminal has the above third PDU session in the first communication system, there is no need to re-establish the PDU session for transmitting data for the first application. Three PDU sessions can ensure the data transmission quality of the first application and save power consumption of the terminal. If the terminal does not have the above-mentioned third PDU session in the first communication system, according to the parameter information for establishing the PDU session corresponding to the first application, in the first communication system The establishment of a second PDU session ensures the data transmission quality of the first application.
  • the second communication system is used for the second application
  • the data transmission PDN connection does not support interoperability between the first communication system and the second communication system.
  • the terminal After the terminal is transferred from the second communication system back to the first communication system, it also includes: The terminal obtains parameter information for establishing a PDU session corresponding to the second application according to the identifier of the second application; if the terminal does not have a fourth PDU session in the first communication system, the first The parameter information in the context of the four PDU sessions includes at least part of the parameter information of the PDU session corresponding to the establishment of the second application, and then the terminal according to the Parameter information of the PDU session, establish a fifth PDU session in the first communication system, and use the fifth PDU session to transmit data for the second application; if the terminal exists in the first communication system Said fourth PDU session, then the terminal in the first communication system using said fourth session PDU transfer data to the second application.
  • the terminal determines the PDU session that transmits data for the second application in the first communication system according to the identification of the second application, and the terminal can ensure that the determined is the first The PDU session in which the application transmits data can meet the data transmission quality requirement of the second application, thereby ensuring the data transmission quality of the second application when the terminal is transferred from the second communication system to the first communication system.
  • the first transmission information further includes a data network name DNN used by the first PDU session; at the terminal, the first communication After the system is transferred to the second communication system, the method further includes: in a case where the target PDN connection exists in the second communication system, the terminal uses the target PDN connection in the second communication system Transmitting data for the first PDU session, wherein the target PDN connection is a PDN connection using a target access point name APN, and the target APN is a DNN used in the first PDU session in the second communication The corresponding APN in the system.
  • the first transmission information includes the context of the first PDU session; the terminal transfers from the first communication system to the first After the second communication system, the method further includes: the terminal establishing a first PDN connection in the second communication system according to the context of the first PDU session; the terminal is used in the second communication system The first PDN connection transmits data for the first PDU session.
  • the context of the first PDU session includes the data network name DNN used by the first PDU session; and the terminal establishes the first in the second communication system according to the context of the first PDU session.
  • the method further includes: the terminal determining that there is no PDN connection using the target access point name APN in the second communication system, where the target APN is the DNN used in the first PDU session. The corresponding APN in the second communication system.
  • the method further includes: the first PDU session does not support interoperation between the first communication system and the second communication system.
  • the terminal saves the first transmission information.
  • the terminal can be transferred from the first communication system to the second communication system, and then transferred from the second communication system back to the first communication system, the terminal can re-determine a guarantee for the first application The first application data transmission quality PDU session.
  • the first transmission information includes the context of the first PDU session.
  • This solution can improve the efficiency of re-establishing a PDU session for the first application when the terminal is transferred from the first communication system to the second communication system and then transferred from the second communication system back to the first communication system.
  • the present application provides a communication method for transferring scenarios between different communication systems, including: a terminal uses a first public data network PDN connection in a 4G communication system to transmit data for a first application, the first The PDN connection does not support interoperation between the 4G communication system and the 5G communication system; after the terminal is transferred from the 4G communication system to the 5G communication system, the terminal obtains at least according to the first transmission information of the first application A first PDU session, and using the first PDU session in the 5G communication system to transmit data for the first application, and the first transmission information includes an identifier of the first application.
  • the terminal uses the first PDU session to transmit data for the first application according to the first transmission information of the first application, because the first transmission information of the first application includes the identification of the first application
  • the determined first PDU session can meet the data transmission quality requirements of the first application, thereby ensuring the data transmission quality of the first application when the terminal is transferred from the second communication system to the first communication system.
  • the terminal when the terminal is transferred from the first communication system to the second communication system and then transferred from the second communication system back to the first communication system, the terminal uses a default PDU session to transmit data for the first application and the The problem that the default PDU session cannot meet the data transmission quality requirements of the first application results in the degradation of the data transmission quality of the first application.
  • the terminal acquiring the first PDU session according to at least the first transmission information of the first application includes: the terminal according to the first An application identifier to obtain parameter information for establishing a PDU session corresponding to the first application; the terminal according to the parameter information for establishing a PDU session corresponding to the first application in the 5G communication system The first PDU session is established.
  • This solution provides a specific implementation for the terminal to obtain a PDU session that can meet the data transmission quality requirements of the first application according to the identifier of the first application.
  • the terminal acquiring the first PDU session according to at least the first transmission information of the first application includes: the terminal according to the first The identification of the application to obtain parameter information for establishing a PDU session corresponding to the first application; and, if the terminal does not have a second PDU session in the 5G communication system, the parameter in the context of the second PDU session The information includes at least part of the parameter information for establishing a PDU session corresponding to the first application, and then the terminal according to the parameter information for establishing a PDU session corresponding to the first application, in 5G Establishing the first PDU session in the communication system;
  • the second PDU session is the first PDU session.
  • This solution provides another specific implementation for the terminal to obtain a PDU session that can meet the data transmission quality requirements of the first application according to the identifier of the first application. This solution can reduce the power consumption of the terminal.
  • the method further includes: the first PDN connection does not support interoperation between the first communication system and the second communication system In this case, the terminal saves the first transmission information.
  • the terminal can determine a PDU session for the first application that can guarantee the data transmission quality of the first application.
  • the present application provides an apparatus for transferring scenarios between different communication systems, including: a first processing module configured to use a first protocol data unit PDU session in a first communication system to transmit for a first application Data, the first PDU session does not support interoperation between the first communication system and the second communication system; a second processing module is used for the device to transfer from the first communication system to the first A second communication system; after the device is transferred from the second communication system back to the first communication system, the second processing module and / or the first processing module is used for at least according to the first application of the first A transmission information to obtain a second PDU session, the first transmission information includes an identification of the first application; the first processing module is also used to use the second PDU session in the first communication system Transmitting data for the first application.
  • the first transmission information further includes: a context of the first PDU session; and the second processing module is configured to at least according to the first
  • the first transmission information of an application to obtain the second PDU session includes: the second processing module is specifically configured to establish the second PDU session according to the context of the first PDU session.
  • the second processing module and the first processing module are used to obtain the second according to at least the first transmission information of the first application
  • the PDU session includes: the first processing module, specifically used to obtain parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application; the second processing module, specifically used Based on the parameter information used to establish the PDU session corresponding to the first application, to establish the second PDU session.
  • the second processing module and the first processing module are configured to obtain the second according to at least the first transmission information of the first application
  • the PDU session includes: the first processing module: specifically used to obtain parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application; and if the device is in the first There is no third PDU session in a communication system, and the parameter information in the context of the third PDU session includes at least part of the parameter information of the PDU session corresponding to the first application, the first A second processing module, specifically configured to establish a second PDU session in the first communication system according to the parameter information for establishing a PDU session corresponding to the first application; if the device is in the first communication If the third PDU session exists in the system, the third PDU session is the second PDU session.
  • the device further includes a second processing module; if the device opens a second application in the second communication system, the second The PDN connection used by the second application to transmit data in the communication system does not support interoperability between the first communication system and the second communication system, and the device is transferred from the second communication system back to the After the first communication system: the first processing module is also used to obtain parameter information for establishing a PDU session corresponding to the second application according to the identifier of the second application; if the device is in the first There is no fourth PDU session in a communication system, and the parameter information in the context of the fourth PDU session includes at least part of the parameter information in the PDU session corresponding to the second application, the first A second processing module, also used to establish a fifth PDU session in the first communication system according to the parameter information for establishing a PDU session corresponding to the second application; the first processing module is also used to use Said fifth session PDU data transmission to the second application;
  • the first processing module is further configured to use the fourth PDU session in the first communication system as the first Two applications transfer data.
  • the first transmission information further includes a data network name DNN used by the first PDU session; the first communication After the system is transferred to the second communication system: in the case where the device has a target PDN connection in the second communication system, the first processing module is also used for use in the second communication system
  • the target PDN connection transmits data for the first PDU session, where the target PDN connection is a PDN connection using a target access point name APN, and the target APN is a DNN used by the first PDU session.
  • the corresponding APN in the second communication system.
  • the first transmission information includes the context of the first PDU session; the device transfers from the first communication system to the first After the second communication system: the second processing module is used to establish a first PDN connection in the second communication system according to the context of the first PDU session; the first processing module is also used to The second communication system uses the first PDN connection to transmit data for the first PDU session.
  • the context of the first PDU session includes the data network name DNN used by the first PDU session; used in the second processing module Before establishing the first PDN connection in the second communication system according to the context of the first PDU session, the first processing module is further configured to determine that the device is in the second communication system There is no PDN connection using the target access point name APN, which is the corresponding APN of the DNN used in the first PDU session in the second communication system.
  • the first processing module is further configured to not support the first communication system and the second communication in the first PDU session In the case of interoperation between systems, the first transmission information is saved.
  • the first transmission information includes the context of the first PDU session.
  • the first communication system is a fifth-generation communication system
  • the second communication system is a fourth-generation communication system.
  • the present application provides an apparatus for transferring scenarios between different communication systems, including: the first processing module, configured to use a first public data network PDN connection as a first application in a 4G communication system To transmit data, the first PDN connection does not support interoperability between the 4G communication system and the 5G communication system; after the device is transferred from the 4G communication system to the 5G communication system, the first processing module and / or the first A second processing module, configured to obtain a first PDU session according to at least the first transmission information of the first application; the first processing module, also used to use the first PDU session in the 5G communication system is The first application transmits data, and the first transmission information includes an identifier of the first application.
  • the first processing module and the second processing module are configured to acquire the first PDU session according to at least the first transmission information of the first application Including: the first processing module, specifically configured to obtain parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application; the second processing module, specifically configured to The parameter information for establishing a PDU session corresponding to the first application establishes the first PDU session in the 5G communication system.
  • the first processing module and the second processing module are configured to obtain the first PDU according to at least the first transmission information of the first application
  • the session includes: the first processing module, specifically used to obtain parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application; and if the device is in a 5G communication system There is no second PDU session, the parameter information in the context of the second PDU session includes at least part of the parameter information in the PDU session corresponding to the first application, the second processing module, Specifically, it is used to establish the first PDU session in the 5G communication system according to the parameter information for establishing the PDU session corresponding to the first application; the second PDU exists in the device in the 5G communication system Session, the second PDU session is the first PDU session.
  • the first processing module is also used to save the first transmission information.
  • an embodiment of the present application provides an apparatus for transferring scenarios between different communication systems, including: an application processor for using a first protocol data unit PDU session as a first application in a first communication system Transmit data, the first PDU session does not support interoperability between the first communication system and the second communication system; a modem for the device to transfer from the first communication system to the second communication System; after the device is transferred from the second communication system back to the first communication system, the modem and / or the application processor is used to obtain the first according to at least the first transmission information of the first application Two PDU sessions, the first transmission information includes the identification of the first application; the application processor is also used to transmit the first application using the second PDU session in the first communication system data.
  • the first transmission information further includes: a context of the first PDU session; and the modem, which is used to at least according to the first application
  • the first transmission information to obtain the second PDU session includes that the modem is specifically used to establish the second PDU session according to the context of the first PDU session.
  • the acquiring the second PDU session by the modem and the application processor according to at least the first transmission information of the first application includes: An application processor, specifically configured to acquire parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application; the modem is specifically configured to establish the first The parameter information of the corresponding PDU session is applied to establish the second PDU session.
  • the modem and the application processor are configured to acquire the second PDU session according to at least the first transmission information of the first application, including :
  • the application processor is specifically configured to: according to the identifier of the first application, acquire parameter information for establishing a PDU session corresponding to the first application; and if the device is in the first communication system There is no third PDU session, and the parameter information in the context of the third PDU session includes at least part of the parameter information used to establish the PDU session corresponding to the first application, the modem is specifically used for Establish a second PDU session in the first communication system according to the parameter information for establishing a PDU session corresponding to the first application; if the device has the third in the first communication system PDU session, the third PDU session is the second PDU session.
  • the application process Is also used to obtain parameter information for establishing a PDU session corresponding to the second application according to the identifier of the second application; if the device does not have a fourth PDU session in the first communication system, The parameter information in the context of the fourth PDU session includes at least part of the parameter information in the PDU session corresponding to the second application, and the modem is used to establish the The parameter information of the PDU session corresponding to the second application establishes a fifth PDU session in the first communication system; the application processor is further configured to use the fifth PDU session to transmit data for the second application If the device has the fourth PDU session in the first communication system, the application processor is further configured to use the fourth P
  • the first transmission information further includes a data network name DNN used by the first PDU session; the first communication After the system is transferred to the second communication system: in the case where the device has a target PDN connection in the second communication system, the application processor is also used to use the device in the second communication system
  • the target PDN connection transmits data for the first PDU session, wherein the target PDN connection is a PDN connection using a target access point name APN, and the target APN is a DNN used in the first PDU session.
  • the corresponding APN in the second communication system is described.
  • the first transmission information includes the context of the first PDU session; the device transfers from the first communication system to the first After the second communication system: the modem is used to establish a first PDN connection in the second communication system according to the context of the first PDU session; the application processor is also used in the second communication The system uses the first PDN connection to transmit data for the first PDU session.
  • the context of the first PDU session includes the data network name DNN used by the first PDU session;
  • the context of the first PDU session, before establishing the first PDN connection in the second communication system, the application processor is also used to determine that the device does not have a use target in the second communication system
  • the PDN connection of the access point name APN, and the target APN is the corresponding APN of the DNN used in the first PDU session in the second communication system.
  • the application processor is further configured to not support the first communication system and the second communication system in the first PDU session In the case of interoperation between them, the first transmission information is saved.
  • the first transmission information includes the context of the first PDU session.
  • the first communication system is a fifth-generation communication system
  • the second communication system is a fourth-generation communication system.
  • an embodiment of the present application provides an apparatus for transferring scenarios between different communication systems, including: an application processor for transmitting a first application in a 4G communication system using a first public data network PDN connection Data, the first PDN connection does not support interoperability between the 4G communication system and the 5G communication system; after the device is transferred from the 4G communication system to the 5G communication system, the application processor and / or modem uses To obtain a first PDU session based at least on the first transmission information of the first application; the application processor is further configured to use the first PDU session in the 5G communication system to transmit for the first application For data, the first transmission information includes an identification of the first application.
  • the application processor and the modem for acquiring the first PDU session according to at least the first transmission information of the first application include: The application processor is specifically configured to obtain parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application; the modem is specifically configured to establish the The parameter information of the PDU session corresponding to the first application establishes the first PDU session in the 5G communication system.
  • the application processor and the modem are configured to acquire the first PDU session according to at least the first transmission information of the first application, including:
  • the application processor is specifically configured to obtain parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application; and if the device does not have a second PDU session in the 5G communication system ,
  • the parameter information in the context of the second PDU session includes at least part of the parameter information in the PDU session corresponding to the first application, and the modem is specifically used to establish Establishing parameter information of the PDU session corresponding to the first application to establish the first PDU session in the 5G communication system;
  • the second PDU session is the first PDU session.
  • the application processor is also used to save the first transmission information.
  • an embodiment of the present application provides an apparatus for transferring scenarios between different communication systems.
  • the terminal includes a processor and a memory, and the memory stores instructions, and when the instructions are executed by the processor, Causing the apparatus to perform the method described in the first aspect and any possible implementation manner of the first aspect or the method described in the second aspect and any possible implementation manner of the second aspect.
  • an embodiment of the present application provides a readable storage medium, characterized in that a computer program is stored on the readable storage medium; when the computer program is executed, it is implemented as in the first aspect and the first The method described in any possible implementation manner of the aspect or the method described in the second aspect and any possible implementation manner of the second aspect.
  • the terminal determines a second PDU session based on the first transmission information of the application, and uses the second PDU session to transmit data for the application . Since the first transmission information includes at least the identification of the application, the terminal can ensure that the determined second PDU session can meet the data transmission quality requirements of the application, thereby ensuring that the terminal is transferred from the first communication system to the second communication system.
  • the data transmission quality of the application When transferring from the second communication system back to the first communication system, the data transmission quality of the application. That is, when the terminal is transferred from the first communication system to the second communication system and then transferred from the second communication system back to the first communication system, the terminal uses a default PDU session to transmit data for the application and the default PDU session does not The problem that the data transmission quality of the application is reduced due to the requirement of the data transmission quality of the application can be met.
  • FIG. 1 is a schematic diagram of a system architecture provided by an embodiment of this application.
  • FIG. 2 is a flowchart 1 of a communication method for transferring scenarios between different communication systems provided by an embodiment of the present application;
  • FIG. 3 is an interaction diagram 1 of a communication method for transferring scenarios between different communication systems provided by an embodiment of the present application;
  • FIG. 4 is a flowchart 2 of a communication method for transferring scenarios between different communication systems provided by an embodiment of the present application;
  • FIG. 5 is an interaction diagram 2 of a communication method for transferring scenarios between different communication systems provided by an embodiment of the present application
  • FIG. 6 is a flowchart 3 of a communication method for transferring scenarios between different communication systems provided by an embodiment of the present application;
  • FIG. 7 is a schematic structural diagram of an apparatus for transferring scenarios between different communication systems according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of an apparatus for transferring scenarios between different communication systems according to another embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • Current terminal devices can simultaneously support different generations of mobile communication networks, and can switch between different generations of mobile communication networks.
  • the performance of the first communication system such as data transmission speed is better than that of the second communication system
  • the terminal when the terminal is in the second communication system and supports communication in the first communication system, the terminal can switch from the second communication system to the first Communication system to obtain higher data transmission speed; at the same time, in some scenarios, the terminal can also switch from the second communication system to the first communication system, that is, the terminal can be transferred between the second communication system and the first communication system .
  • the terminal of the current user is in the first communication system
  • the user is using the application a installed in the terminal device
  • the PDU session a used for data transmission by the application a in the first communication system does not support interoperation.
  • the terminal enters the area that does not support the first communication system and then enters the area that supports the first communication system
  • the terminal moves from the first communication system to the second communication
  • the original PDU session a has been released
  • the terminal will use a default PDU session b for application a to transmit data, but PDU session b may not be able to meet
  • the requirement of the data transmission quality of the application a causes the data transmission quality of the application a to degrade, for example, the phenomenon that the application a does not run smoothly or even gets stuck.
  • This application provides a communication method for transferring scenarios between different communication systems.
  • PDN Protocol Data Network
  • APN Access Point Name
  • PDN connection context may include one or more of the following information: the IP address used by the PDN connection, APN, PDN Gateway (PDN GateWay, PGW) address, and context information carried by each EPS.
  • the EPS bearer refers to the data transmission channel in the 4G communication system.
  • the EPS bearer in the active state refers to a data transmission channel that has been established in the 4G communication system and has a certain quality of service (QoS).
  • QoS quality of service
  • the EPS bearer in the inactive state refers to a data transmission channel that has been deleted in the first communication system.
  • PDU Session In the first communication system (for example, 5G communication system), a combination of a set of QoS flows established on the terminal. These QoS flows have the same IP address and data network name (Data Network Name, DNN). On the terminal and network side, a PDU session is identified by IP address and DNN.
  • PDU session context includes the IP address, DNN, SMF, and UPF addresses used in the PDU session, and context information for each QoS flow.
  • each PDU session of the first communication system has a continuity description.
  • SSC mode 1 means that the terminal can maintain continuity of the PDU session during the movement
  • SSC mode 2 means that the terminal can release the existing PDU session first during the movement and establish a new PDU session instead of the released PDU session
  • SSC mode 3 which means that the terminal can continue to maintain the existing PDU session for a period of time while moving, and at the same time establish a new PDU session to replace the original PDU session, after the existing PDU session time expires, release the existing For PDU sessions, only new PDU sessions are kept.
  • the QoS flow information includes: QoS information of the QoS flow, QoS flow identification (QoS Flow Identity, QFI), and a combination of one or more information of the QoS flow template.
  • the QoS information may further include the 5G QoS indicator (5QI) corresponding to the QoS, the allocation and maintenance priority (Allocation and Retention Priority, ARP), and the guaranteed streaming bit rate (Guaranteed Flow, Bit Rate, GFBR), Maximum Flow Bit Rate (MFBR), a combination of one or more messages of Notification Control.
  • the QoS flow information is used to describe the QoS flow, including but not limited to the information described above.
  • the QoS flow information may also be referred to as QoS parameters, and the QoS flow information in the embodiments of the present application may be replaced with QoS parameters.
  • the system architecture of the communication system to which the embodiments of the present application can be applied is shown in FIG. 1.
  • the system architecture includes a first communication system and a second communication system.
  • the first communication system is the fifth generation (Fifth Generation, 5G)
  • the communication system and the second communication system are fourth generation (Forth Generation, 4G) communication systems as an example for description.
  • the communication system includes a terminal, an evolved UMTS terrestrial radio access network (Evolved UMTS Terrestrial Radio Access Network, E-UTRAN), a mobility management entity (Mobility Management Entity, MME), and a service gateway (Serving Gateway, SGW) ), Access and mobility management function (Access and Mobility management Function, AMF) and 5G wireless access network (5G Radio Access Network, 5G-RAN), as well as the core network device 100 of the first communication system and the second communication system Core network device 300, and core network device 200 co-located by the first communication system and the second communication system. It is understandable that MME and AMF also belong to core network equipment.
  • E-UTRAN evolved UMTS terrestrial radio access network
  • MME Mobility Management Entity
  • SGW Service Gateway
  • AMF Access and Mobility management Function
  • 5G wireless access network 5G Radio Access Network
  • the specific connection relationship between the core network device 100 of the first communication system and the AMF is not shown, and the specific connection relationship is the same as the connection of the AMF and the core network device 200 co-located with the first communication system and the second communication system ;
  • the specific connection relationship between the core network device 300 of the second communication system and the SGW is not shown, and the specific connection relationship is connected with the SGW and the core network device 200 co-located with the first communication system and the second communication system the same.
  • E-UTRAN is a base station on the 4G side, and the terminal can access the 4G communication system through the base station;
  • 5G-RAN is a base station on the 5G side, and the terminal can access the 5G communication system through the base station.
  • the terminal may access the base station of the 5G communication system through the base station, or the 5G-RAN may be a base station specifically used for the terminal to access the 5G communication system.
  • the MME is a 4G core network device, which is responsible for authentication, authorization, mobility management, and session management of the terminal; the associated EPS bearer ID (Linked EPS Bearer ID, LBI) of the terminal's PDN connection at 4G is allocated by the entity.
  • SGW is a 4G core network device (core network gateway) and is responsible for data forwarding and downlink data storage.
  • AMF is a 5G core network device, which is used to authenticate and authorize users and manage users' mobility.
  • the first communication system, the second communication system, and the co-located core network device 200 include: a user plane function (User Plane Function, UPF) + a user plane of a PDN gateway (PDN Gateway-User plane, PGW-U), and a session management function ( Session Management (Function, SMF) + PDN gateway control plane (PDN Gateway-Control plane, PGW-C), policy control function (policy control function, PCF) + policy and charging rule function unit (Policy and Charging Rules, Function, PCRF ), Home Subscriber Server (HSS) + Unified Data Management (UDM).
  • UPF User Plane Function
  • PGW-U PDN gateway-User plane
  • Session Management Session Management
  • PDN gateway control plane PDN Gateway-Control plane, PGW-C
  • policy control function policy control function
  • PCRF Policy and Charging Rules, Function
  • HSS Home Subscriber Server
  • UDM Unified Data Management
  • UPF + PGW-U is a core network device shared by 4G and 5G, that is, a core network device co-located by 4G and 5G, and includes the functions of UPF and PGW-U.
  • UPF is a user plane device of the 5G core network, provides user plane services for the terminal's PDU session, and is an interface gateway between the operator network and the external network.
  • PGW-U is a user plane device of the 4G core network, provides user plane services for the PDN connection of the terminal, and is an interface gateway between the operator network and the external network.
  • UPF + PGW-U may also be called PGW-U + UPF, as long as the device containing UPF and PGW-U functions is the same as this device.
  • SMF + PGW-C is the core network equipment shared by 4G and 5G, that is, the core network equipment co-located by 4G and 5G, and includes the functions of SMF and PGW-C.
  • SMF is the control plane device of the 5G core network, which provides control plane services for the terminal's PDU session; manages the 5G PDU session, manages the 5G QoS, is responsible for allocating IP addresses for the terminal, and is responsible for selecting UPF for the terminal.
  • PGW-C is the control plane device of the 4G core network and provides user plane services for the PDN connection of the terminal; it is responsible for allocating IP addresses for the terminal and establishing EPS bearers for the terminal.
  • SMF + PGW-C may also be called PGW-C + SMF, as long as the device containing SMF and PGW-C functions is the same as this device.
  • PCF + PCRF is the core network equipment shared by 4G and 5G, that is, the core network equipment co-located by 4G and 5G, including PCF and PCRF.
  • PCRF is a 4G core network device, which is responsible for generating a strategy for users to establish a data bearer (Bearer).
  • PCF is a 5G core network device and has similar functions as PCRF.
  • PCF + PCRF may also be referred to as PCRF + PCF, as long as the device containing both PCF and PCRF functions is the same as this device.
  • UDM + HSS is the core network equipment shared by 4G and 5G, that is, the core network equipment co-located by 4G and 5G, including HSS and UDM.
  • HSS is a 4G core network device, which is used to save user's subscription data.
  • UDM is a 5G core network device, which is used to save user's contract data.
  • UDM + HSS may also be referred to as HSS + UDM, as long as the device containing both HSS and UDM functions is the same as this device.
  • the N26 interface is the interface between MME and AMF, and this interface is currently optional.
  • the terminal context can be transferred through the N26 interface.
  • the core network device 100 of the first communication system includes: UPF, SMF, PCF, UDM.
  • the core network device 300 of the second communication system includes: PGW-U, PGW-C, PCRF, and HSS.
  • the terminal in the embodiment of the present application may be a mobile phone, a tablet computer, a notebook computer, a netbook, a portable electronic device, and the like.
  • the communication method of the present application for transferring between different communication systems will be described.
  • the following uses the first communication system as a 5G communication system and the second communication system as a 4G communication system as an example.
  • the terminal transfers the data from the first communication system to the second communication system during the process of transferring data to the application through the PDU session in the first communication system, and then transfers it back to the first communication system.
  • the communication method used to transfer scenarios between different communication systems is described.
  • the terminal is transferred from the first communication system to the second communication system, which may mean that the terminal selects or reselects from the first communication system to the second communication system in the idle state, or the terminal is connected Handover from the first communication system to the second communication system in the connected state.
  • the transfer of the terminal from the second communication system back to the second communication system may refer to that the terminal selects or reselects from the second communication system to the first communication system in the idle state (idle), or the terminal is in the connected state ( connected) handover from the second communication system to the first communication system.
  • FIG. 2 is a flowchart 1 of a communication method for transferring scenarios between different communication systems provided by an embodiment of the present application. Referring to FIG. 2, the method in this embodiment includes:
  • Step S201 The terminal uses a first PDU session in the first communication system to transmit data for the first application.
  • the first PDU session does not support interworking between the first communication system and the second communication system.
  • the first communication system in this embodiment may be a fifth-generation communication system
  • the second communication system may be a fourth-generation communication system.
  • the PDU session in the first communication system and the PDN connection in the second communication system are corresponding concepts.
  • One PDU session may include multiple QoS flows
  • one PDN connection may include multiple EPS bearers
  • the terminal may establish multiple PDU sessions in the first communication system
  • one or more supports may exist in the multiple PDU sessions in the first
  • An interoperable PDU session between a communication system and a second communication system the PDU session supporting the interoperation between the first communication system and the second communication system has the following properties: when the terminal is transferred from the first communication system to In the second communication system, a PDN connection corresponding to the PDU session may be automatically established or generated in the second communication system, and the PDU session and the PDN connection have the same IP address.
  • the terminal also has one or more PDU sessions that do not support interoperability between the first communication system and the second communication system among multiple PDU sessions established in the first communication system, and do not support the first communication system
  • the interoperable PDU session with the second communication system has the property that when the terminal is transferred from the first communication system to the second communication system, the PDN connection corresponding to the PDU session cannot be established in the second communication system That is, a PDN connection using the same IP address as the PDU session cannot be established or generated, and after the terminal accesses the second communication system, the PDU session is locally deleted.
  • the communication method for transferring scenarios between different communication systems of this embodiment may be applicable to a first application that transmits data through a first PDU session that does not support interoperability between the first communication system and the second communication system .
  • the terminal uses the first PDU session to transmit data for the first application.
  • the first application in this embodiment is started means that the first application enters the running state or the first application is activated. After the first application is started, the first application runs in the foreground or background.
  • the process of the terminal acquiring the first PDU session may be as follows:
  • the terminal filters the first application through a user equipment route selection strategy (URSP) to obtain parameter information for establishing a PDU session corresponding to the first application.
  • the parameter information used to establish the PDU session corresponding to the first application may include: DNN information, SSC mode information, IP address information, QoS flow information, slice identification, access mode priority, and so on.
  • the QoS flow information includes one or more of the following information: session aggregation maximum bit rate (session AMBR), SSC mode, PDU session identification, QoS rules.
  • the QoS rule may be one QoS rule or multiple QoS rules.
  • the QoS rule includes one or more of the following information: QoS rule identifier, QoS flow identifier, priority, packet filter; or, the QoS rule includes one or more of the following information : QoS rule identification, QoS flow identification, priority, packet filter identification.
  • the packet filter includes a packet filter attribute (packet filter attribute) and a packet filter identifier (packet filter ID).
  • the QoS flow information may also include a combination of 5QI, ARP, GFBR, MFBR corresponding to the QoS flow and one or more information of notification control.
  • the PDU session corresponding to the first application refers to a PDU session that can be used for data transmission by the first application.
  • the terminal determines whether there is a PDU session that can transmit data for the first application in the established PDU session. Specifically, if the parameter information in the context in the established PDU session of the terminal is a PDU session for establishing at least part of the parameter information of the PDU session corresponding to the first application, the terminal determines that the established PDU session There is a PDU session capable of transmitting data for the first application, otherwise, the terminal determines that there is no PDU session capable of transmitting data for the first application in the established PDU session.
  • the parameter information in the context of the PDU session a is at least part of the parameter information used to establish the PDU session corresponding to the first application, such as:
  • the DNN information in the parameter information of the PDU session corresponding to the establishment of the first application includes DNN 1 and DNN 2
  • the DNN information in the context of the PDU session a is DNN 1 .
  • the PDU session a is a PDU session capable of transmitting data for the first application, or in other words, the PDU session a is a PDU session corresponding to the first application.
  • the terminal determines the first PDU session from the established PDU session capable of transmitting data for the first application, such as the first A PDU session is the PDU session a in the above example. Further, at this time, the terminal also stores information that the first PDU session does not support interoperation between the first communication system and the second communication system, and the terminal determines that the first PDU session does not support the Interoperation between the first communication system and the second communication system.
  • the terminal When the terminal determines that there is no PDU session capable of transmitting data for the first application in the established PDU session, the terminal establishes the first PDU session according to the parameter information for establishing the PDU session corresponding to the first application.
  • the terminal establishes the first PDU session through interaction with the core network device corresponding to the first communication system according to the parameter information for establishing the PDU session corresponding to the first application.
  • the method will not be repeated in this embodiment.
  • the core network device corresponding to the first communication system is the core network device of the first communication system in the core network device (for example, 200 in FIG. 1) co-located by the first communication system and the second communication system, or the first communication
  • the core network device corresponding to the system is a core network device independently set for the first communication system (such as 100 in FIG. 1).
  • the terminal sends a PDU session establishment request to the core network device corresponding to the first communication system.
  • the PDU session establishment request includes parameter information for establishing the PDU session corresponding to the first application.
  • the core network device corresponding to the first communication system will determine the target parameter information from the parameter information used to establish the PDU session corresponding to the first application, and send the determined target parameter information to the terminal, so that the terminal can use the target parameter information
  • the first PDU session is established.
  • the target parameter information is parameter information included in the context of the first PDU session.
  • the terminal does not receive the parameter information corresponding to the target parameter information for establishing a PDN connection in the second communication system from the core network device corresponding to the first communication system, then the terminal It is determined that the first PDU session does not support interoperation between the first communication system and the second communication system.
  • the terminal may use the first PDU session to transmit data for the first application.
  • the terminal may save the first transmission information of the first application.
  • the transmission information of the first PDU session may include the identification of the first application.
  • the transmission information of the first PDU session may also include the context of the first PDU session.
  • Step S202 During the process of the terminal transmitting data for the first application through the first PDU session, the terminal transfers from the first communication system to the second communication system.
  • the terminal may be transferred from the first communication system to the second communication system through a handover process: the terminal receives a handover command (handover command) during the handover process in the connected state, and the handover command may be the first communication
  • the base station of the system is sent to the terminal.
  • the terminal may be transferred from the first communication system to the second communication system through selection or reselection.
  • the terminal After the terminal is transferred from the first communication system to the second communication system, the first PDU session transmitting data for the first application in the first communication system is released.
  • Step S203 After the terminal is transferred from the second communication system back to the first communication system, the terminal acquires a second PDU session in the first communication system according to at least the first transmission information of the first application and uses The second PDU session transmits data for the first application, and the first transmission information includes the identifier of the first application.
  • the terminal may be transferred from the second communication system to the first communication system through a switching process: the terminal receives a handover command (handover command) during the switching process in the connected state, and the switching command may be the second communication
  • the base station of the system is sent to the terminal.
  • the terminal may be transferred from the second communication system to the first communication system through selection or reselection.
  • the terminal After the terminal is transferred from the second communication system back to the first communication system, since the first PDU session has been released, in order to continue transmitting data for the first application, another PDU session needs to be acquired (referred to as the first in this embodiment). Two PDU sessions) transmit data for the first application.
  • the terminal obtains the second PDU session according to at least the first transmission information of the first application, which may be implemented in the following four ways but not limited to the following four ways:
  • the terminal establishes a second PDU session according to the context of the first PDU session.
  • the first application uses the second PDU session to transmit data.
  • the second PDU session established according to the context of the first PDU session has the same information as the QoS flow of the first PDU session.
  • Using the second PDU session to transfer data for the first application can realize the first application to transfer data The purpose of the quality is not reduced.
  • the second PDU session is established according to the context of the first PDU session, and the efficiency of establishing the second PDU session is relatively high.
  • the terminal obtains parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application.
  • the terminal filters the first application through URSP, and obtains parameter information for establishing a PDU session corresponding to the first application.
  • the terminal establishes a second PDU session according to the parameter information used to establish the PDU session corresponding to the first application.
  • the terminal establishes the second PDU session according to the parameter information used to establish the PDU session corresponding to the first application, and refers to the above-mentioned "establishing the first PDU session according to the parameter information used to establish the PDU session corresponding to the first application" The method will not be repeated here.
  • This mode can realize the establishment of the second PDU session when the context of the first PDU does not exist in the first transmission information.
  • the parameter information for establishing the PDU session corresponding to the first application can be obtained, that is, the parameter information of the PDU session matching the data transmission of the first application can be obtained.
  • Using the second PDU session established according to the parameter information of the PDU session matching the data transmission of the first application to transmit data for the first application can achieve the purpose of not reducing the quality of the data transmitted by the first application.
  • the terminal obtains parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application;
  • the parameter information in the context of the third PDU session includes at least part of the parameter information used to establish the PDU session corresponding to the first application.
  • the parameter information in the context of the third PDU session includes At least part of the parameter information of the PDU session corresponding to the first application.
  • the terminal will establish the second PDU session in the first communication system according to the parameter information for establishing the PDU session corresponding to the first application.
  • this method can also achieve the purpose of not reducing the quality of data transmitted by the application, and this method can also reduce the power consumption of the terminal.
  • the terminal obtains parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application;
  • the terminal When the terminal has a third PDU session in the first communication system, and the parameter information in the context of the third PDU session includes at least part of the parameter information used to establish the PDU session corresponding to the first application, the terminal Acquire the third PDU session as the second PDU session.
  • the terminal uses the second PDU session to transmit data for the first application, including: the terminal uses the third PDU session to transmit data for the first application, and the third PDU is the second PDU session.
  • This method can also achieve the purpose of not reducing the quality of data transmitted by the application, and this method can also reduce the power consumption of the terminal.
  • the terminal After the terminal obtains the second PDU session, it can transmit data for the first application through the second PDU session according to the identifier of the first application. Specifically, transmitting data for the first application through the second PDU session according to the identifier of the first application means that the terminal learns that the second PDU session is required for the first PDU session according to the identifier of the first application included in the first transmission information.
  • An application transmits data, binds the first application to the second PDU session, and realizes the purpose of transmitting data for the first application through the second PDU session.
  • the terminal may include a modem (Modem) and an application processor.
  • the application processor may be understood as a processor including a processing unit in the framework of the terminal and a control unit for controlling an application (application, referred to as APP).
  • the application processor may understand components including the Framework unit and the APP unit of the terminal.
  • Framework can also be called the application framework layer, which is a further encapsulation of the runtime library layer, and is provided to the upper layer call through the interface to complete the business support of the application layer.
  • FIG. 3 is an interaction diagram of a communication method for transferring scenarios between different communication systems provided by an embodiment of this application. Referring to FIG. 3, the method includes:
  • Step S301 After the first application is started, the application processor uses URSP to filter the first application, obtain parameter information for establishing a PDU session corresponding to the first application, and determine whether there is a capability in the established PDU session in the terminal A PDU session that transmits data for the first application.
  • step S302 to step S303 are executed:
  • Step S302 The application processor determines the first PDU session from the PDU sessions that can transmit data for the first application among the established PDU sessions in the terminal.
  • Step S303 The application processor determines that the first PDU session does not support interoperation between the first communication system and the second communication system, and saves the first transmission information of the first application, where the first transmission information includes the identification of the first application .
  • the terminal stores that the first PDU session is not supported between the first communication system and the second communication system According to this information, the application processor determines that the first PDU session does not support the interoperation between the first communication system and the second communication system.
  • step S304 to step S307 are executed:
  • Step S304 The application processor sends parameter information for establishing a PDU session corresponding to the first application to the modem.
  • Step S305 The modem establishes the first PDU session and determines that the first PDU session does not support interoperation between the first communication system and the second communication system.
  • the modem establishes the first PDU session by interacting with the core network device corresponding to the first communication system, and the modem determines that during the establishment of the first PDU session, the core network device corresponding to the first communication system has not received the target
  • the parameter information corresponding to the parameter information for establishing a PDN connection that is, the modem determines that the first PDU session does not support interoperation between the first communication system and the second communication system.
  • Step S306 The modem sends instruction information to the application processor, where the instruction information indicates that the first PDU session does not support interoperation.
  • Step S307 The application processor saves the first transmission information of the first application.
  • Step S308 The modem determines that the terminal is transferred from the first communication system to the second communication system, and deletes the first PDU session.
  • Step S309 The modem sends a first notification message to the application processor.
  • the first notification message is used to indicate that the terminal has been transferred from the first communication system to the second communication system.
  • Step S310 The modem determines that the terminal is transferred from the second communication system back to the first communication system.
  • Step S311 The modem sends a second notification message to the application processor.
  • the second notification message is used to instruct the terminal to transfer from the second communication system back to the first communication system.
  • step S312 to step S313 are executed:
  • Step S312 The application processor sends the context of the first PDU session to the modem.
  • step S303 and step S307 the application processor of the terminal saves the first transmission information of the first application, therefore, the application processor of the terminal sends the context of the first PDU session to the modem.
  • Step S313 The modem establishes a second PDU session according to the context of the first PDU session.
  • step S314 to step S317 are executed:
  • Step S314 The application processor obtains parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application.
  • the application processor may use URSP to filter the first application to obtain parameter information for establishing a PDU session corresponding to the first application.
  • Step S315 The application processor determines whether a third PDU session exists in the first communication system, and the parameter information in the context of the third PDU session includes at least part of the parameter information used to establish the PDU session corresponding to the first application.
  • This step is optional.
  • step S316 to step S318 are executed:
  • Step S316 The application processor sends the parameter information for establishing the PDU session corresponding to the first application to the modem of the terminal.
  • Step S317 The modem establishes a second PDU session in the first communication system according to the parameter information for establishing the PDU session corresponding to the first application.
  • Step S318 The application processor uses the second PDU session to transmit data for the first application.
  • step S319 is executed:
  • Step S319 The application processor uses the third PDU session to transmit data for the first application.
  • the third PDU session may also be referred to as a second PDU session.
  • the terminal determines a second PDU session based on the first transmission information of the application, and uses the second PDU session to transmit data for the application. Since the first transmission information includes at least the identification of the application, the terminal can ensure that the determined second PDU session can meet the data transmission quality requirements of the application, thereby ensuring that the terminal is transferred from the first communication system to the second communication system. When transferring from the second communication system back to the first communication system, the data transmission quality of the application.
  • the terminal uses a default PDU session to transmit data for the application and the default PDU session does not
  • the problem that the data transmission quality of the application is reduced due to the requirement of the data transmission quality of the application can be met.
  • the first application uses the first PDU session to transmit data in the first communication system.
  • the first PDU session does not support the interoperation between the first communication system and the second communication system.
  • FIG. 4 is a flowchart 2 of a communication method for transferring scenarios between different communication systems according to an embodiment of the present application. Referring to FIG. 4, the method in this embodiment includes:
  • Step S401 During the process of the terminal using the first PDU session to transmit data for the first application, the terminal is transferred from the first communication system to the second communication system, the first PDU session is not supported between the first communication system and the second communication system Interoperability.
  • step S202 for specific implementation of this step, reference may be made to the explanation in step S202 in the embodiment shown in FIG. 2, and details are not described in this embodiment.
  • Step S402 The terminal determines whether there is a target PDN connection using the target APN in the second communication system.
  • the target APN is the corresponding APN of the DNN used in the first PDU session in the second communication system, and the first transmission information of the first application Includes the context of the first PDU session, and the context of the first PDU session includes the DNN used by the first PDU session.
  • each DNN has an APN corresponding to it in the second communication system.
  • each DNN has its mapped APN in the second communication system.
  • the terminal acquires the The APN corresponding to the DNN used in the first PDU session, which is referred to as the target APN in this embodiment.
  • the terminal may obtain the target APN corresponding to the DNN used in the first PDU session in the second communication system through a local mapping method.
  • the method of local mapping can refer to the existing method, which will not be repeated here.
  • the terminal determines whether the terminal has a target PDN connection using the target APN among one or more PDN connections existing in the second communication system.
  • the terminal has a target PDN connection in the second communication system, there may be a target PDU session that supports interoperation in the first communication system, and the DNN used by the target PDU session communicates with the first PDU.
  • the DNN used is the same, but the target PDU session conversation is not used for data transmission of the first application.
  • the target PDN connection is the PDN connection automatically established by the terminal after the terminal is transferred to the second communication system, and corresponds to the target PDU session.
  • the target PDU session and the target PDN connection use the same IP address.
  • step S403 is executed.
  • Step S403 The terminal uses the target PDN connection to transmit data for the first application.
  • the terminal may transmit data for the first application through the target PDN connection according to the identifier of the first application.
  • transmitting data for the first application through the target PDN connection means that the terminal learns that the target PDN connection is required as the first application according to the identifier of the first application included in the first transmission information Transmit data, bind the first application to the target PDN connection, and realize the purpose of transmitting data for the first application through the target PDN connection.
  • step S404 to step S405 are executed.
  • Step S404 The terminal establishes a first PDN connection according to the context of the first PDU session.
  • the terminal acquires the parameters for establishing the PDN connection corresponding to each first parameter in the context of the first PDU session, and the terminal establishes the target PDN connection according to the parameters corresponding to the first parameters for establishing the PDN connection, that is, the terminal
  • the parameters used for establishing the first PDN connection include parameters corresponding to the first parameters for establishing the PDN connection, for example, the APN used for the first PDN connection is the target APN described above.
  • the first parameter in the context of the first PDU session refers to a parameter in the context of the first PDU session that has corresponding parameters for establishing a PDN connection
  • the parameter DNN in the context of the first PDU session is the first PDU session A first parameter in the context.
  • the IP address used by the first PDN connection is different from the IP address used by the first PDU session.
  • the process of establishing a PDN connection by the terminal may refer to the existing method of establishing a PDN connection, and details are not described in this embodiment.
  • Step S405 The terminal uses the first PDN connection to transmit data for the first application.
  • the terminal may transmit data for the first application through the first PDN connection according to the identifier of the first application.
  • transmitting data for the first application through the first PDN connection means that the terminal learns that the first PDN connection needs to be used for the first application according to the identifier of the first application included in the first transmission information
  • the first application transmits data, binds the first application to the first PDN connection, and realizes the purpose of transmitting data for the first application through the first PDN connection.
  • FIG. 5 is an interaction diagram 2 of a communication method for transferring scenarios between different communication systems provided by an embodiment of the present application. Referring to FIG. 5, the method includes:
  • Step S501 The modem determines that the terminal is transferred from the first communication system to the second communication system.
  • Step S502 The modem sends a first notification message to the application processor.
  • the first notification message is used to indicate that the terminal has been transferred from the first communication system to the second communication system.
  • Step S503 The application processor determines whether there is a target PDN connection using the target APN in the second communication system.
  • step S504 is executed:
  • Step S504 The application processor determines that the target PDN is the PDN connection used by the first application to transmit data in the second communication system, and obtains the IP address of the target PDN connection to use the target PDN connection to transmit data for the first application.
  • step S505 to step S509 are executed:
  • Step S505 The application processor obtains a parameter for establishing a PDN connection corresponding to the first parameter in the context of the first PDU session.
  • Step S506 The application processor sends the parameter for establishing the PDN connection corresponding to the first parameter in the context of the first PDU session to the modem;
  • Step S507 The modem establishes the first PDN connection according to the parameter for establishing the PDN connection corresponding to the first parameter in the context of the first PDU session.
  • Step S508 The application processor uses the first PDN connection to transmit data for the first application.
  • the terminal transfers from the first communication system to the second communication
  • the first application by acquiring the PDN connection for transmitting data for the application in the second communication system according to the context of the first PDU session in the transmission information of the first application, the first application can be used in the second communication system
  • the data continues to be transmitted in, ensuring the normal operation of the first application when the terminal is transferred between different communication systems.
  • the specific embodiment is used to launch the second application in the second communication system for the terminal, and the PDN connection used by the second application to transmit data in the second communication system is not supported in the first communication system and the second communication system.
  • the method for the second application to transmit data will be described.
  • FIG. 6 is a flowchart 3 of a communication method for transferring scenarios between different communication systems according to an embodiment of the present application. Referring to FIG. 6, the method in this embodiment includes:
  • Step S601. The terminal uses a second PDN connection in the second communication system to transmit data for the first application.
  • the second PDN connection does not support interoperation between the second communication system and the first communication system.
  • the second application in this embodiment is an application that is opened when the terminal is in the second communication system. After the terminal determines that the second PDN connection does not support interoperation between the second communication system and the first communication system, the terminal may save the second transmission information of the second application, and the second transmission information includes the identification of the second application.
  • the method that the terminal determines that the second PDN connection does not support the interoperation between the first communication system and the second communication system may be: in the process of establishing the second PDN connection, there is no connection from the core network of the second communication system The device receives the parameter for establishing the PDU session corresponding to the parameter used by the second PDN connection.
  • Step S602 The terminal transfers from the second communication system to the first communication system.
  • Step S603 The terminal obtains a fifth PDU session based on at least the second transmission information of the second application, and uses the fifth PDU session to transmit data for the first application in the first communication system.
  • the terminal After the terminal transfers from the second communication system back to the first communication system, it needs to acquire a PDU session (referred to as a fifth PDU session in this embodiment) to transmit data for the second application.
  • a PDU session referred to as a fifth PDU session in this embodiment
  • the terminal obtains the fifth PDU session according to at least the first transmission information of the second application, which may be implemented in the following three ways but not limited to the following three ways:
  • the first way can be achieved through steps e1 ⁇ e2:
  • the terminal acquires parameter information for establishing a PDU session corresponding to the second application according to the identifier of the second application included in the second transmission information.
  • the terminal filters the second application through URSP to obtain parameter information for establishing a PDU session corresponding to the second application.
  • the terminal establishes a fifth PDU session according to the parameter information for establishing the PDU session corresponding to the second application.
  • the terminal establishes the fifth PDU session according to the parameter information used to establish the PDU session corresponding to the second application, and refers to the method of “establishing the first PDU session according to the parameter information used to establish the PDU session corresponding to the first application” above , No more details here.
  • the parameter information for establishing the PDU session corresponding to the second application can be obtained, that is, the parameter information of the PDU session matching the data transmission of the second application can be obtained and used
  • the fifth PDU session established according to the parameter information of the PDU session matching the data transmission of the second application transmits data for the second application, which can achieve the purpose of not reducing the quality of the data transmitted by the second application.
  • the terminal obtains parameter information for establishing a PDU session corresponding to the second application according to the identifier of the second application;
  • the parameter information in the context of the fourth PDU session includes at least part of the parameter information used to establish the PDU session corresponding to the first application.
  • this way needs to determine whether there is a fourth PDU session in the first communication system, and the fourth PDU session satisfies the following conditions: the parameter information in the context of the fourth PDU session includes At least part of the parameter information of the PDU session corresponding to the second application.
  • the terminal will establish the fifth PDU session in the first communication system according to the parameter information for establishing the PDU session corresponding to the second application.
  • the method for the terminal to determine whether the terminal has the fourth PDU session in the first communication system can refer to the method for determining whether the terminal has the first PDU session in the first communication system in the embodiment shown in FIG. Repeat again.
  • this method can also achieve the purpose of not reducing the quality of data transmitted by the application, and this method can also reduce the power consumption of the terminal.
  • the terminal obtains parameter information for establishing a PDU session corresponding to the second application according to the identifier of the second application;
  • the terminal has a fourth PDU session in the first communication system, and if the parameter information in the context of the fourth PDU session includes at least part of the parameter information used to establish the PDU session corresponding to the second application, the terminal Acquire the fourth PDU session as the fifth PDU session.
  • the terminal uses the fifth PDU session to transmit data for the first application, including: the terminal uses the fourth PDU session to transmit data for the first application, and the fourth PDU is the fifth PDU session.
  • This method can also achieve the purpose of not reducing the quality of data transmitted by the application, and this method can also reduce the power consumption of the terminal.
  • the terminal After the terminal obtains the fifth PDU session, it can transmit data for the second application through the fifth PDU session according to the identifier of the second application. Specifically, transmitting data for the second application through the fifth PDU session according to the identifier of the second application means that the terminal learns that the fourth PDU session is required for the second PDU session according to the identifier of the second application included in the second transmission information.
  • the second application transmits data, binds the second application to the fifth PDU session, and realizes the purpose of transmitting data for the second application through the fifth PDU session.
  • the terminal transfers from the second communication system to In the first communication system, the terminal can determine a PDU session that can meet the data transmission quality requirements of the application according to the application identification, and use the PDU session to transmit data for the application, thereby ensuring that the terminal is When transferred to the first communication system, the data transmission quality of the application.
  • FIG. 7 is a schematic structural diagram of an apparatus for transferring scenarios between different communication systems according to an embodiment of the present application.
  • an embodiment of the present application provides an apparatus 700 for transferring scenarios between different communication systems.
  • the device may be a terminal device or a component of a terminal device (for example, an integrated circuit, a chip, etc.).
  • the device may also be another communication module for implementing the method corresponding to the first node or the second node in the method embodiment of the present application.
  • the apparatus 700 may include a first processing module 701 (first processing unit) and a second processing module 702 (second processing unit).
  • it may also include a transceiver module 703 (transceiver unit) and a storage module 704 (storage unit).
  • one or more modules as shown in FIG. 7 may be implemented by one or more processors, or by one or more processors and memory; or by one or more processors Implemented with a transceiver; or implemented by one or more processors, memory, and transceivers, which is not limited in the embodiments of the present application.
  • the processor, memory and transceiver can be set separately or integrated.
  • the device has a function of implementing the terminal device described in the embodiment of the present application.
  • the device includes a terminal device to perform a module or unit or means corresponding to the steps of the terminal device described in the embodiment of the present application.
  • the unit or means (means) can be implemented by software, or by hardware, or can be implemented by hardware executing corresponding software, or by a combination of software and hardware.
  • each module in the apparatus 700 in the embodiment of the present application may be used to execute the method described in the embodiment shown in FIG. 2 or FIG. 3 or FIG. 4 or FIG. 5 or FIG. 6 in the embodiment of the present application.
  • the apparatus 700 for transferring scenarios between different communication systems in this embodiment includes: a first processing module 701 and a second processing module 702.
  • the first processing module 701 is configured to use the first protocol data unit PDU session in the first communication system to transmit data for the first application.
  • the first PDU session is not supported between the first communication system and the second communication system.
  • the second processing module and / or the first processing module are configured to obtain a second PDU session based on at least the first transmission information of the first application, the first transmission information including the first An identification of an application; the first processing module is also used to transmit data for the first application using the second PDU session in the first communication system.
  • the first transmission information further includes: the context of the first PDU session; and the second processing module 702 is configured to acquire the second PDU session according to at least the first transmission information of the first application Including: the second processing module 702 is specifically configured to establish the second PDU session according to the context of the first PDU session.
  • the second processing module 702 and the first processing module 701 are configured to obtain a second PDU session according to at least the first transmission information of the first application, including: the first processing module 701, Specifically, it is used to obtain parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application; the second processing module 702 is specifically used to establish the first The parameter information of the corresponding PDU session is applied to establish the second PDU session.
  • the second processing module 702 and the first processing module 701 are configured to obtain a second PDU session according to at least the first transmission information of the first application, including: the first processing module 701 , Specifically for: acquiring parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application; and if the apparatus 700 does not have a third PDU in the first communication system Session, the parameter information in the context of the third PDU session includes at least part of the parameter information of the PDU session corresponding to the first application, and the second processing module 702 is specifically used for The parameter information for establishing a PDU session corresponding to the first application, establishing a second PDU session in the first communication system; if the device 700 has the third in the first communication system PDU session, the third PDU session is the second PDU session.
  • the device 700 further includes a second processing module 702; if the device 700 starts a second application in the second communication system, the second communication system is used for transmission of the second application
  • the PDN connection of data does not support interoperability between the first communication system and the second communication system, after the device 700 is transferred from the second communication system back to the first communication system: the first The processing module 701 is further configured to obtain parameter information for establishing a PDU session corresponding to the second application according to the identifier of the second application; if the device 700 does not exist in the first communication system, the fourth PDU session, the parameter information in the context of the fourth PDU session includes at least part of the parameter information in the PDU session corresponding to the second application, and the second processing module 702 is also used to Establish a fifth PDU session in the first communication system according to the parameter information for establishing a PDU session corresponding to the second application; the first processing module 701 is also used to use the fifth PDU The conversation is the second With the transmission data;
  • the first processing module 701 is further configured to use the fourth PDU session in the first communication system.
  • the second application transmits data.
  • the first transmission information further includes the data network name DNN used by the first PDU session; after the device 700 is transferred from the first communication system to the second communication system:
  • the first processing module 701 is further configured to use the target PDN connection as the first PDU in the second communication system Session transmission data, wherein the target PDN connection is a PDN connection using a target access point name APN, and the target APN is a corresponding APN of the DNN used in the first PDU session in the second communication system.
  • the first transmission information includes the context of the first PDU session; after the apparatus 700 is transferred from the first communication system to the second communication system: the second processing module 702, It is used to establish a first PDN connection in the second communication system according to the context of the first PDU session; the first processing module 701 is also used to use the first PDN connection in the second communication system
  • the PDN connection transmits data for the first PDU session.
  • the context of the first PDU session includes the data network name DNN used by the first PDU session; the second processing module 702 is configured to use the context of the first PDU session according to the context of the first PDU session.
  • the first processing module 701 is further configured to determine that the device 700 does not have a PDN using the target access point name APN in the second communication system For connection, the target APN is the APN corresponding to the DNN used in the first PDU session in the second communication system.
  • the first processing module 701 is further configured to save the first PDU session in a case where the first PDU session does not support interoperation between the first communication system and the second communication system The first transmission information.
  • the first transmission information includes the context of the first PDU session.
  • the first communication system is a fifth generation communication system
  • the second communication system is a fourth generation communication system.
  • the apparatus 700 in this embodiment may be a terminal, or may be a chip applied in the terminal or other combined devices and components having the above terminal functions.
  • the first processing module may be an application processor
  • the second processing module may be a modem.
  • the first processing module may be an application processor in the chip system
  • the second processing module may be a modem in the chip system.
  • the device in this embodiment for transferring scenarios between different communication systems may be used to execute the technical solutions in the foregoing method embodiments.
  • the implementation principles and technical effects are similar, and are not described here.
  • the apparatus 700 for transferring scenarios between different communication systems in this embodiment includes: a first processing module 701 and a second processing module 702.
  • the first processing module 701 is configured to use a first public data network PDN connection in a 4G communication system to transmit data for a first application.
  • the first PDN connection does not support the interaction between the 4G communication system and the 5G communication system Operation; after the device is transferred from the 4G communication system to the 5G communication system, the first processing module 701 and / or the second processing module 702 are used to obtain the first according to at least the first transmission information of the first application A PDU session; the first processing module 701 is further configured to use the first PDU session to transmit data for the first application in the 5G communication system, and the first transmission information includes the first application Logo.
  • the first processing module 701 and the second processing module 702 are configured to obtain a first PDU session based at least on the first transmission information of the first application, and include: the first processing module 701, specifically For acquiring parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application; the second processing module 702 is specifically used for establishing the first application according to the The parameter information of the corresponding PDU session establishes the first PDU session in the 5G communication system.
  • the first processing module 701 and the second processing module 702 are configured to obtain a first PDU session based at least on the first transmission information of the first application, and include: the first processing module 701, specifically For acquiring parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application; and if the device does not have a second PDU session in the 5G communication system, the second PDU
  • the parameter information in the context of the session includes at least part of the parameter information in the PDU session corresponding to the first application
  • the second processing module 702 is specifically configured to establish the Parameter information of the PDU session corresponding to the first application, if the first PDU session is established in the 5G communication system; if the second PDU session exists in the device in the 5G communication system, the second PDU session is The first PDU session is described.
  • the first processing module 701 is further configured to save the The first transmission information.
  • the device in this embodiment may be a terminal, or may be a chip applied in the terminal or other combined devices, components, etc. having the above terminal functions.
  • the first processing module may be an application processor
  • the second processing module may be a modem.
  • the first processing module may be an application processor in the chip system
  • the second processing module may be a modem in the chip system.
  • the device in this embodiment for transferring scenarios between different communication systems may be used to execute the technical solutions in the foregoing method embodiments.
  • the implementation principles and technical effects are similar, and are not described here.
  • the division of the modules in the embodiments of the present application is schematic, and is only a division of logical functions. In actual implementation, there may be another division manner.
  • the functional modules in the embodiments of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or software function modules.
  • the integrated module is implemented in the form of a software function module and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • the technical solution of the present application may be essentially or part of the contribution to the existing technology or all or part of the technical solution may be embodied in the form of a software product, the computer software product is stored in a storage medium It includes several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the embodiments of the present application.
  • the foregoing storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes .
  • FIG. 8 is a schematic structural diagram of an apparatus for transferring scenarios between different communication systems according to another embodiment of the present application.
  • the apparatus 800 for transferring scenarios between different communication systems may be a terminal
  • the device may also be a chip, chip system, or processor that supports the terminal device to implement the above method, or a chip, chip system, or processor that supports the above method.
  • the device 800 may be used to implement the method described in the above method embodiments. For details, refer to the description in the above method embodiments.
  • the device 800 may include one or more processors, and the processor 801 may also be referred to as a processing unit, which may implement certain control functions.
  • the processor 801 may be a general-purpose processor or a dedicated processor. For example, it may be a modem or an application processor.
  • the modem can be used to process communication protocols and communication data
  • the application processor can be used to control the device 800 (eg, base station, baseband chip, terminal, terminal chip, DU or CU, etc.), execute software programs, and process software programs The data.
  • the processor 801 may also store instructions and / or data 803, and the instructions and / or data 803 may be executed by the processor, so that the apparatus 800 performs the above method Describe the method.
  • the processor 801 may include a transceiver unit for implementing receiving and sending functions.
  • the transceiver unit may be a transceiver circuit, or an interface, or an interface circuit.
  • the transceiver circuits, interfaces, or interface circuits used to implement the receive and transmit functions can be separate or integrated.
  • the above-mentioned transceiving circuit, interface or interface circuit can be used for reading and writing codes / data, or the above-mentioned transceiving circuit, interface or interface circuit can be used for signal transmission or transmission.
  • the device 800 may include a circuit, and the circuit may implement the function of sending or receiving or communicating in the foregoing method embodiments.
  • the device 800 may include one or more memories 802, on which instructions 804 may be stored, and the instructions may be executed on the processor, so that the device 800 executes the above method embodiments Describe the method.
  • the memory may also store data.
  • the processor may also store instructions and / or data. The processor and the memory may be set separately or integrated together. For example, the corresponding relationship described in the above method embodiments may be stored in a memory or a processor.
  • the device 800 may further include a transceiver 805 and / or an antenna 806.
  • the processor 801 may be referred to as a processing unit, and controls the device 800.
  • the transceiver 805 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., for implementing a transceiver function.
  • processors and transceivers described in this application can be implemented in integrated circuits (IC), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (application specific integrated circuits (ASIC)), and printed circuit boards ( printed circuit board (PCB), electronic equipment, etc.
  • IC integrated circuits
  • analog ICs analog ICs
  • RFICs radio frequency integrated circuits
  • mixed-signal ICs mixed-signal ICs
  • ASIC application specific integrated circuits
  • PCB printed circuit board
  • the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor (PMOS), bipolar junction transistor (Bipolar Junction Transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • N-type metal oxide semiconductor nMetal-oxide-semiconductor
  • PMOS positive channel metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the device used in the scenario of transfer between different communication systems in the description of the above embodiments may be a terminal device, but the scope of the device described in this application for the scenario of transfer between different communication systems is not limited to this, and is used
  • the structure of the device in the scenario of transferring between different communication systems may not be limited by FIG. 8.
  • the device used in the transfer scenario between different communication systems may be an independent device or may be a part of the device.
  • the device used in the transfer scenario between different communication systems may be one or a combination of the following:
  • a set of one or more ICs may also include storage components for storing data and / or instructions;
  • ASIC such as modem (MSM)
  • FIG. 9 is a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • the terminal can be applied to the terminals described in the above embodiments of the present application.
  • FIG. 9 shows only the main components of the terminal.
  • the terminal 900 includes an application processor 901, a modem 902, a memory 903, a control circuit 904, an antenna 905, and an input / output device 906 (a communication connection between the modem and the memory. Shows the connection between modem and memory).
  • the modem 902 is mainly used for processing communication protocols and communication data.
  • the application processor 901 is mainly used to control the entire terminal, execute a software program, and process data of the software program.
  • the memory 903 is mainly used to store software programs and data.
  • the control circuit 904 is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • the antenna 905 is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • the input and output device 906, such as a touch screen, a display screen, and a keyboard, are mainly used to receive data input by the user and output data to the user.
  • the application processor 901 can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the modem 902 performs baseband processing on the data to be sent, and outputs a baseband signal to the radio frequency circuit
  • the control circuit 904 performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the control circuit 904 receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the modem 902, and the modem 902 converts the baseband signal into data and processes the data.
  • FIG. 9 shows only one memory. In an actual terminal, there may be multiple memories 903.
  • the memory may also be referred to as a storage medium or a storage device, etc. This embodiment of the present application does not limit this.
  • the terminal may include multiple modems 902 to adapt to different network standards, the terminal may include multiple application processors 901 to enhance its processing capability, and various components of the terminal may be connected through various buses.
  • the modem 902 can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the application processor 901 can also be expressed as a central processing circuit or a central processing chip or a central processor.
  • the function of processing the communication protocol and the communication data may be built in the modem 902 or may be stored in the storage unit in the form of a software program, and the modem 902 executes the software program to realize the baseband processing function.
  • the modem 902 and the application processor 901 may also be integrated together.
  • the terminal in this embodiment may include an application processor 901 and a modem 902, where:
  • the application processor 901 is configured to use the first protocol data unit PDU session in the first communication system to transmit data for the first application, and the first PDU session does not support between the first communication system and the second communication system Interoperability; modem 902 for the terminal to transfer from the first communication system to the second communication system; after the terminal is transferred from the second communication system back to the first communication system, the modem 902 and / or the application processor 901, configured to obtain a second PDU session according to at least the first transmission information of the first application, where the first transmission information includes an identifier of the first application; the application The processor 901 is further configured to use the second PDU session in the first communication system to transmit data for the first application.
  • the first transmission information further includes: the context of the first PDU session; and the modem 902, configured to acquire the second PDU session according to at least the first transmission information of the first application, includes: The modem 902 is specifically configured to establish the second PDU session according to the context of the first PDU session.
  • the modem 902 and the application processor 901 obtain at least a second PDU session according to the first transmission information of the first application, including: the application processor 901 is specifically configured to An application identifier to obtain parameter information for establishing a PDU session corresponding to the first application; the modem 902 is specifically configured to establish according to the parameter information for establishing a PDU session corresponding to the first application The second PDU session.
  • the modem 902 and the application processor 901 are configured to acquire a second PDU session based on at least the first transmission information of the first application, and include: the application processor 901, specifically used to: Acquiring parameter information for establishing a PDU session corresponding to the first application according to the identifier of the first application; and if the terminal does not have a third PDU session in the first communication system, the third The parameter information in the context of the PDU session includes at least part of the parameter information used to establish the PDU session corresponding to the first application, and the modem 902 is specifically configured to establish the first Apply the parameter information of the corresponding PDU session to establish a second PDU session in the first communication system; if the terminal has the third PDU session in the first communication system, the third PDU session Is the second PDU session.
  • the terminal further includes a modem 902; if the terminal starts a second application in the second communication system, the PDN connection used by the second communication system for data transmission by the second application is not Support interoperability between the first communication system and the second communication system, after the terminal is transferred from the second communication system back to the first communication system: the application processor 901 is also used to Acquiring parameter information for establishing a PDU session corresponding to the second application according to the identifier of the second application; if the terminal does not have a fourth PDU session in the first communication system, the fourth PDU
  • the parameter information in the context of the session includes at least part of the parameter information of the PDU session corresponding to the establishment of the second application, and the modem 902 is used to establish the correspondence of the second application according to the The parameter information of the PDU session of the first PDU session is established in the first communication system; the application processor 901 is also used to transmit data for the second application using the fifth PDU session; If the terminal has the fourth PDU session in the first communication system, the application
  • the first transmission information further includes the data network name DNN used in the first PDU session; after the terminal is transferred from the first communication system to the second communication system: in the When the terminal has a target PDN connection in the second communication system, the application processor 901 is further configured to use the target PDN connection in the second communication system to transmit data for the first PDU session , Where the target PDN connection is a PDN connection using a target access point name APN, and the target APN is the APN corresponding to the DNN used in the first PDU session in the second communication system.
  • the first transmission information includes the context of the first PDU session; after the terminal is transferred from the first communication system to the second communication system: the modem 902 is used to The context of the first PDU session, establishing a first PDN connection in the second communication system; the application processor 901 is also used to use the first PDN connection in the second communication system as the The first PDU session transmits data.
  • the context of the first PDU session includes the data network name DNN used by the first PDU session; the modem 902 is used to determine the context of the first PDU session and the second Before establishing the first PDN connection in the communication system, the application processor 901 is further configured to determine that the terminal does not have a PDN connection using the target access point name APN in the second communication system.
  • the APN is the corresponding APN of the DNN used in the first PDU session in the second communication system.
  • the application processor 901 is further configured to save the first PDU session when the first PDU session does not support interoperation between the first communication system and the second communication system. 1. Transfer information.
  • the first transmission information includes the context of the first PDU session.
  • the first communication system is a fifth generation communication system
  • the second communication system is a fourth generation communication system.
  • the terminal in this embodiment includes an application processor 901 and a modem 902, where:
  • the application processor 901 is configured to transmit data for a first application using a first public data network PDN connection in a 4G communication system, and the first PDN connection does not support interoperation between the 4G communication system and the 5G communication system ; After the terminal is transferred from the 4G communication system to the 5G communication system, the application processor 901 and / or modem 902 are used to obtain the first PDU session according to at least the first transmission information of the first application; The application processor 901 is further configured to use the first PDU session in the 5G communication system to transmit data for the first application, and the first transmission information includes an identifier of the first application.
  • the application processor 901 and the modem 902 are configured to acquire a first PDU session based on at least the first transmission information of the first application, and include: the application processor 901 is specifically configured to The identifier of the first application, acquiring parameter information for establishing a PDU session corresponding to the first application; the modem 902 is specifically used for establishing parameter information for establishing a PDU session corresponding to the first application, The first PDU session is established in the 5G communication system.
  • the application processor 901 and the modem 902 are configured to acquire a first PDU session based on at least the first transmission information of the first application, and include: the application processor 901 is specifically configured to The identification of the first application, acquiring parameter information for establishing a PDU session corresponding to the first application; and if the terminal does not have a second PDU session in the 5G communication system, the The parameter information includes at least part of the parameter information used to establish a PDU session corresponding to the first application, and the modem 902 is specifically configured to establish a PDU session corresponding to the first application according to the Parameter information, establishing the first PDU session in the 5G communication system;
  • the second PDU session is the first PDU session.
  • the application processor 901 is further configured to save the first 1. Transfer information.
  • Embodiments of the present application also provide a readable storage medium on which a computer program is stored; when the computer program is executed, it implements the scenario in the above method embodiment for transferring between different communication systems Communication method.
  • the application processor 901 or the modem 902 in each embodiment of the present application may be an integrated circuit chip with signal processing capabilities.
  • the application processor 901 and the modem 902 may also be integrated together, for example, on a system chip (System on Chip, SoC).
  • SoC System on Chip
  • the device described in each embodiment for transferring between different communication systems may be a terminal; or a part of the terminal, such as a system chip on the terminal.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other available Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electronically Erase programmable EPROM (EEPROM) or flash memory.
  • the volatile memory may be a random access memory (random access memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate synchronous dynamic random access memory double data SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • serial link DRAM SLDRAM
  • direct RAMbus RAM direct RAMbus RAM
  • the present application also provides a computer-readable medium on which a computer program is stored, which when executed by a computer implements the functions of any of the above method embodiments.
  • the present application also provides a computer program product that, when executed by a computer, implements the functions of any of the foregoing method embodiments.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including a server, a data center, and the like integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a high-density digital video disc (DVD)
  • DVD high-density digital video disc
  • SSD solid state disk
  • system and “network” are often used interchangeably herein.
  • the term “and / or” in this article is just an association relationship that describes an associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist at the same time, exist alone In the three cases of B, A can be singular or plural, and B can be singular or plural.
  • the character "/" generally indicates that the related object is a "or" relationship.
  • At least one of or “at least one of” herein means all or any combination of the listed items, for example, "at least one of A, B, and C", It can be expressed that there are six cases of A, B, C, A and B, B and C, A, B, and C. A can be singular or plural, and B can be Singular or plural, C can be singular or plural.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B based on A does not mean determining B based on A alone, and B may also be determined based on A and / or other information.
  • the pre-defined in this application can be understood as definition, pre-defined, stored, pre-stored, pre-negotiated, pre-configured, cured, or pre-fired.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network 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 alone physically, or two or more units are integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

Abstract

本申请实施例提供一种用于在不同通信系统间转移场景下的通信方法和装置,该方法包括:终端在第一通信系统中使用第一协议数据单元PDU会话为第一应用传输数据,该第一PDU会话不支持在该第一通信系统与第二通信系统之间的互操作;该终端从该第一通信系统转移至该第二通信系统;该终端从该第二通信系统转移回该第一通信系统后,该终端至少根据该第一应用的第一传输信息,获取第二PDU会话,并在该第一通信系统中使用该第二PDU会话为该第一应用传输数据,该第一传输信息包括该第一应用的标识。本申请实施例保证了终端在不同的通信系统之间转移时,终端中使用不支持不同的通信系统之间互操作的PDU会话的应用的数据传输质量。

Description

用于在不同通信系统间转移场景下的通信方法和装置
本申请要求于2019年5月29日提交中国国家知识产权局、申请号为201910457353.7、申请名称为“用于在不同通信系统间转移场景下的通信方法和装置”的中国专利申请的优先权,以及于2019年4月25日提交中国国家知识产权局、申请号为201910340568.0、申请名称为“通信方法和装置”的中国专利申请的优先权,以及于2018年10月17日提交中国国家知识产权局、申请号为201811208745.1、申请名称为“一种会话建立的方法和设备”的中国专利申请的优先权,它们的全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域,尤其涉及一种用于在不同通信系统间转移场景下的通信方法和装置。
背景技术
随着通信技术的快速发展,出现了诸如智能手机、平板电脑、便携式设备等多种终端,这些终端可以同时支持不同代的移动通信网络,且可以在不同代的移动通信网络之间进行切换。第五代(5th generation,简称5G)移动通信技术是对第四代(forth generation,简称4G)移动通信技术的延伸,具有高性能、低延迟和高容量等特性,其最高数据传输速度可达到数十Gbps以上,即第五代(5G)网络比现有的第四代(4G)网络的数据传输速度快1000倍。因此,当终端处于4G网络且支持5G网络时,终端可以从4G网络切换至5G网络,以获取更高的数据传输速度。
由于5G网络与4G网络的服务质量(quality of service,简称QoS)体系差异很大,终端在5G网络内建立协议数据单元(protocol data unit,简称PDU)会话(Session)时,网络侧实体将该PDU会话的参数信息对应的4G网络的公用数据网(public data network,简称PDN)连接的参数信息发送给终端时,终端在5G网络的该PDU会话才能够支持互操作(interworking),互操作即终端可以在IP地址(internet protocol address,网际协议地址)不变的情况下在5G网络和4G网络间转移。反之亦然,终端在4G网络内建立PDN连接时,网络侧实体需要将该PDN连接对应的5G网络的PDU会话的参数信息发送给终端,从而该PDN连接才能支持互操作。
也就是说并不是5G网络内所有的PDU会话都支持互操作,对于在5G网络内通过不支持互操作的PDU会话进行数据传输的应用,当终端在5G网络与4G网络之间转移时,有可能使得该应用传输数据的质量受到影响。
发明内容
本申请提供一种用于在不同通信系统间转移场景下的通信方法和装置,在终端在不同通信系统间转移的情况下,能提高终端上运行的应用的数据传输的质量。
第一方面提供一种用于在不同通信系统间转移场景下的通信方法,包括:终端在第一通信系统中使用第一协议数据单元PDU会话为第一应用传输数据,所述第一PDU会话不支持在所述第一通信系统与第二通信系统之间的互操作;所述终端从所述第一通信系统转移至所述第二通信系统;所述终端从所述第二通信系统转移回所述第一通信系统后,所述终端至少根据所述第一应用的第一传输信息,获取第二PDU会话,并在所述第一通信系统中使用所述第二PDU会话为所述第一应用传输数据,所述第一传输信息包括所述第一应用的标识。
可选地,所述第一通信系统为第五代通信系统,所述第二通信系统为第四代通信系统。
本方案中,对于终端内采用不支持第一通信系统与第二通信系统之间的互操作的第一PDU会话传输数据的第一应用,当终端在从第一通信系统转移至第二通信系统,又从第二通信系统转移回第一通信系统时,本实施例中终端根据该第一应用的第一传输信息,使用第二PDU会话为该第一应用传输数据。由于第一传输信息中至少包括第一应用的标识,终端可第二PDU会话能够满足第一应用的数据传输质量的要求,从而保证了终端在从第一通信系统转移至第二通信系统,又从第二通信系统转移回第一通信系统时,第一应用的数据传输质量。即解决了现有技术中终端在从第一通信系统转移至第二通信系统,又从第二通信系统转移回第一通信系统时,终端采用一默认的PDU会话为第一应用传输数据且该默认的PDU会话不能够满足第一应用的数据传输质量的要求而导致的第一应用的数据传输质量下降的问题。
结合第一方面,在第一方面的一种可能的实现方式中,所述第一传输信息还包括:所述第一PDU会话的上下文;所述终端至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述终端根据所述第一PDU会话的上下文,在所述第一通信系统中建立所述第二PDU会话。
本方案中,建立用于应用数据传输的第二PDU会话的方法根据先前用于第一应用数据传输的第一PDU会话的上下文建立,使得第二PDU会话的建立效率高。
结合第一方面,在第一方面的一种可能的实现方式中,所述终端至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述终端根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;所述终端根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述第一通信系统中建立所述第二PDU会话。
本方案中,终端不需保存第一PDU会话的上下文,节省了终端的内存。
结合第一方面,在第一方面的一种可能的实现方式中,所述终端至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述终端根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及,若所述终端在所述第一通信系统中不存在第三PDU会话,所述第三PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,则所述终端根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述第一通信系统中建立所述第二PDU会话;
若所述终端在所述第一通信系统中存在所述第三PDU会话,则所述第三PDU会 话为所述第二PDU会话。
本方案中,由于如上的第三PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,因此,如上的第三PDU会话与该第一应用的数据传输匹配,因此,若所述终端在所述第一通信系统中存在如上的第三PDU会话时,则无需重新建立为所述第一应用传输数据的PDU会话,采用第三PDU会话就可以保证第一应用的数据传输质量,节省了终端的功耗。若所述终端在所述第一通信系统中不存在如上的第三PDU会话时,则根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述第一通信系统中建立第二PDU会话,保证了第一应用的数据传输质量。
结合第一方面,在第一方面的一种可能的实现方式中,若所述终端在所述第二通信系统中开启了第二应用,所述第二通信系统中用于所述第二应用传输数据的PDN连接不支持在所述第一通信系统与第二通信系统之间的互操作,在所述终端从所述第二通信系统转移回所述第一通信系统之后,还包括:所述终端根据所述第二应用的标识,获取用于建立所述第二应用对应的PDU会话的参数信息;若所述终端在所述第一通信系统中不存在第四PDU会话,所述第四PDU会话的上下文中的参数信息包括所述用于建立所述第二应用对应的PDU会话的参数信息中的至少部分信息,则所述终端根据所述用于建立所述第二应用对应的PDU会话的参数信息,在所述第一通信系统中建立第五PDU会话,并使用所述第五PDU会话为所述第二应用传输数据;若所述终端在所述第一通信系统中存在所述第四PDU会话,则所述终端在所述第一通信系统中使用所述第四PDU会话为所述第二应用传输数据。
本方案中,对于终端从第二通信系统转移至第一通信系统的场景中,若在第二通信系统启动了第二应用,该第二应用传输数据所使用的PDN连接不支持第一通信系统和第二通信系统之间的互操作时,本方案中终端根据该第二应用的标识,确定在第一通信系统中为该第二应用传输数据的PDU会话,终端可保证确定的为第一应用传输数据的PDU会话能够满足该第二应用的数据传输质量的要求,从而保证了终端在从第二通信系统转移至第一通信系统时,该第二应用的数据传输质量。
结合第一方面,在第一方面的一种可能的实现方式中,所述第一传输信息还包括所述第一PDU会话所使用的数据网络名称DNN;在所述终端从所述第一通信系统转移至所述第二通信系统之后,所述方法还包括:在所述第二通信系统中存在目标PDN连接的情况下,所述终端在所述第二通信系统中使用所述目标PDN连接为所述第一PDU会话传输数据,其中,所述目标PDN连接为使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
本方案中,对于在第一通信系统采用不支持第一通信系统与第二通信系统之间的互操作的第一PDU会话传输数据的第一应用,当终端从第一通信系统转移至第二通信系统时,本实施例中通过根据第一应用的传输信息中的第一PDU会话的上下文在第二通信系统中获取为该应用传输数据的PDN连接,可以使得第一应用可以在第二通信系统中继续传输数据,保证了终端在不同的通信系统之间转移时,第一应用的正常运行。
结合第一方面,在第一方面的一种可能的实现方式中,所述第一传输信息包括所 述第一PDU会话的上下文;在所述终端从所述第一通信系统转移至所述第二通信系统之后,所述方法还包括:所述终端根据所述第一PDU会话的上下文,在所述第二通信系统中建立第一PDN连接;所述终端在所述第二通信系统中使用所述第一PDN连接为所述第一PDU会话传输数据。所述第一PDU会话的上下文中包括所述第一PDU会话所使用的数据网络名称DNN;在所述终端根据所述第一PDU会话的上下文,在所述第二通信系统中建立所述第一PDN连接之前,还包括:所述终端确定所述第二通信系统中不存在使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
本方案中,对于在第一通信系统采用不支持第一通信系统与第二通信系统之间的互操作的第一PDU会话传输数据的第一应用,当终端从第一通信系统转移至第二通信系统时,本实施例中通过根据第一应用的传输信息中的第一PDU会话的上下文在第二通信系统中建立为该应用传输数据的PDN连接,可以使得第一应用可以在第二通信系统中继续传输数据,保证了终端在不同的通信系统之间转移时,第一应用的正常运行。
结合第一方面,在第一方面的一种可能的实现方式中,还包括:在所述第一PDU会话不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,所述终端保存所述第一传输信息。
本方案中通过保存第一传输信息,可使得终端从第一通信系统转移至第二通信系统,又从第二通信系统转移回第一通信系统后,终端能够重新为第一应用确定一个能够保证第一应用数据传输质量的PDU会话。
结合第一方面,在第一方面的一种可能的实现方式中,所述第一传输信息包括所述第一PDU会话的上下文。
本方案可以提高终端从第一通信系统转移至第二通信系统,又从第二通信系统转移回第一通信系统时,为第一应用重新建立一个PDU会话的效率。
第二方面,本申请提供一种用于在不同通信系统间转移场景下的通信方法,包括:终端在4G通信系统中使用第一公用数据网PDN连接为第一应用传输数据,所述第一PDN连接不支持在4G通信系统与5G通信系统之间的互操作;在所述终端从4G通信系统转移至5G通信系统后,所述终端至少根据所述第一应用的第一传输信息,获取第一PDU会话,并在所述5G通信系统中使用所述第一PDU会话为所述第一应用传输数据,所述第一传输信息包括所述第一应用的标识。
本方案中,对于终端从第二通信系统转移至第一通信系统的场景中,若在第二通信系统启动了第一应用,第一应用传输数据所使用的PDN连接不支持第一通信系统和第二通信系统之间的互操作时,终端根据第一应用的第一传输信息,使用第一PDU会话为第一应用传输数据,由于第一应用的第一传输信息中包括第一应用的标识,确定的第一PDU会话能够满足第一应用的数据传输质量要求,从而保证了终端在从第二通信系统转移至第一通信系统时,第一应用的数据传输质量。即解决了现有技术中终端在从第一通信系统转移至第二通信系统,又从第二通信系统转移回第一通信系统时,终端采用一默认的PDU会话为第一应用传输数据且该默认的PDU会话不能够满足第一应用的数据传输质量的要求而导致的第一应用的数据传输质量下降的问题。
结合第二方面,在第二方面的一种可能的实现方式中,所述终端至少根据所述第 一应用的第一传输信息,获取第一PDU会话,包括:所述终端根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;所述终端根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述5G通信系统中建立所述第一PDU会话。
本方案提供了终端根据第一应用的标识,获取一个能够满足第一应用的数据传输质量要求的PDU会话的具体实现。
结合第二方面,在第二方面的一种可能的实现方式中,所述终端至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:所述终端根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及,若所述终端在5G通信系统中不存在第二PDU会话,所述第二PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,则所述终端根据所述用于建立所述第一应用对应的PDU会话的参数信息,在5G通信系统中建立所述第一PDU会话;
若所述终端在5G通信系统中存在所述第二PDU会话,则所述第二PDU会话为所述第一PDU会话。
本方案提供了终端根据第一应用的标识,获取一个能够满足第一应用的数据传输质量要求的PDU会话的另一种具体实现,本方案可以降低终端的功耗。
结合第二方面,在第二方面的一种可能的实现方式中,还包括:在所述第一PDN连接不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,所述终端保存所述第一传输信息。
本方案中通过保存第一传输信息,可使得终端从第二通信系统转移至第一通信系统后,终端能够为第一应用确定一个能够保证第一应用数据传输质量的PDU会话。
第三方面,本申请提供一种用于在不同通信系统间转移场景下的装置,包括:第一处理模块,用于在第一通信系统中使用第一协议数据单元PDU会话为第一应用传输数据,所述第一PDU会话不支持在所述第一通信系统与第二通信系统之间的互操作;第二处理模块,用于所述装置从所述第一通信系统转移至所述第二通信系统;在所述装置从所述第二通信系统转移回所述第一通信系统后,第二处理模块和/或所述第一处理模块,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,所述第一传输信息包括所述第一应用的标识;所述第一处理模块,还用于在所述第一通信系统中使用所述第二PDU会话为所述第一应用传输数据。
结合第三方面,在第三方面的一种可能的实现方式中,所述第一传输信息还包括:所述第一PDU会话的上下文;所述第二处理模块,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述第二处理模块,具体用于根据所述第一PDU会话的上下文,建立所述第二PDU会话。
结合第三方面,在第三方面的一种可能的实现方式中,在所述第二处理模块和所述第一处理模块用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述第一处理模块,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;所述第二处理模块,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,建立所述第二PDU会话。
结合第三方面,在第三方面的一种可能的实现方式中,所述第二处理模块和所述第一处理模块,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述第一处理模块:具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及若所述装置在所述第一通信系统中不存在第三PDU会话,所述第三PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,所述第二处理模块,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述第一通信系统中建立第二PDU会话;若所述装置在所述第一通信系统中存在所述第三PDU会话,则所述第三PDU会话为所述第二PDU会话。
结合第三方面,在第三方面的一种可能的实现方式中,所述装置还包括第二处理模块;若所述装置在所述第二通信系统中开启了第二应用,所述第二通信系统中用于所述第二应用传输数据的PDN连接不支持在所述第一通信系统与第二通信系统之间的互操作,在所述装置从所述第二通信系统转移回所述第一通信系统之后:所述第一处理模块,还用于根据所述第二应用的标识,获取用于建立所述第二应用对应的PDU会话的参数信息;若所述装置在所述第一通信系统中不存在第四PDU会话,所述第四PDU会话的上下文中的参数信息包括所述用于建立所述第二应用对应的PDU会话的参数信息中的至少部分信息,所述第二处理模块,还用于根据所述用于建立所述第二应用对应的PDU会话的参数信息,在所述第一通信系统中建立第五PDU会话;所述第一处理模块,还用于使用所述第五PDU会话为所述第二应用传输数据;
若所述装置在所述第一通信系统中存在所述第四PDU会话,则所述第一处理模块,还用于在所述第一通信系统中使用所述第四PDU会话为所述第二应用传输数据。
结合第三方面,在第三方面的一种可能的实现方式中,所述第一传输信息还包括所述第一PDU会话所使用的数据网络名称DNN;在所述装置从所述第一通信系统转移至所述第二通信系统之后:在所述装置在所述第二通信系统中存在目标PDN连接的情况下,所述第一处理模块,还用于在所述第二通信系统中使用所述目标PDN连接为所述第一PDU会话传输数据,其中,所述目标PDN连接为使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
结合第三方面,在第三方面的一种可能的实现方式中,所述第一传输信息包括所述第一PDU会话的上下文;在所述装置从所述第一通信系统转移至所述第二通信系统之后:所述第二处理模块,用于根据所述第一PDU会话的上下文,在所述第二通信系统中建立第一PDN连接;所述第一处理模块,还用于在所述第二通信系统中使用所述第一PDN连接为所述第一PDU会话传输数据。
结合第三方面,在第三方面的一种可能的实现方式中,所述第一PDU会话的上下文中包括所述第一PDU会话所使用的数据网络名称DNN;在所述第二处理模块用于根据所述第一PDU会话的上下文,在所述第二通信系统中建立所述第一PDN连接之前,所述第一处理模块,还用于确定所述装置在所述第二通信系统中不存在使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
结合第三方面,在第三方面的一种可能的实现方式中,所述第一处理模块,还用于在所述第一PDU会话不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,保存所述第一传输信息。
结合第三方面,在第三方面的一种可能的实现方式中,所述第一传输信息包括所述第一PDU会话的上下文。
结合第三方面,在第三方面的一种可能的实现方式中,所述第一通信系统为第五代通信系统,所述第二通信系统为第四代通信系统。
第四方面,本申请提供一种用于在不同通信系统间转移场景下的装置,包括:所述第一处理模块,用于在4G通信系统中使用第一公用数据网PDN连接为第一应用传输数据,所述第一PDN连接不支持在4G通信系统与5G通信系统之间的互操作;在所述装置从4G通信系统转移至5G通信系统后,所述第一处理模块和/或第二处理模块,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话;所述第一处理模块,还用于在所述5G通信系统中使用所述第一PDU会话为所述第一应用传输数据,所述第一传输信息包括所述第一应用的标识。
结合第四方面,在第四方面的一种可能的实现方式中,所述第一处理模块和第二处理模块,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:所述第一处理模块,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;所述第二处理模块,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述5G通信系统中建立所述第一PDU会话。
结合第四方面,在第四方面的一种可能的实现方式中,在所述第一处理模块和第二处理模块,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:所述第一处理模块,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及若所述装置在5G通信系统中不存在第二PDU会话,所述第二PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,所述第二处理模块,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,若5G通信系统中建立所述第一PDU会话;在所述装置在5G通信系统中存在所述第二PDU会话,则所述第二PDU会话为所述第一PDU会话。
结合第四方面,在第四方面的一种可能的实现方式中,在所述第一PDN连接不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,所述第一处理模块,还用于保存所述第一传输信息。
第五方面,本申请实施例提供一种用于在不同通信系统间转移场景下的装置,包括:应用处理器,用于在第一通信系统中使用第一协议数据单元PDU会话为第一应用传输数据,所述第一PDU会话不支持在所述第一通信系统与第二通信系统之间的互操作;调制解调器,用于所述装置从所述第一通信系统转移至所述第二通信系统;在所述装置从所述第二通信系统转移回所述第一通信系统后,调制解调器和/或所述应用处理器,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,所述第一传输信息包括所述第一应用的标识;所述应用处理器,还用于在所述第一通信系统中使用所述第二PDU会话为所述第一应用传输数据。
结合第五方面,在第五方面的一种可能的实现方式中,所述第一传输信息还包括:所述第一PDU会话的上下文;所述调制解调器,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括,所述调制解调器,具体用于根据所述第一PDU会话的上下文,建立所述第二PDU会话。
结合第五方面,在第五方面的一种可能的实现方式中,所述调制解调器和所述应用处理器至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述应用处理器,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;所述调制解调器,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,建立所述第二PDU会话。
结合第五方面,在第五方面的一种可能的实现方式中,所述调制解调器和所述应用处理器,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述应用处理器,具体用于:根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及若所述装置在所述第一通信系统中不存在第三PDU会话,所述第三PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,所述调制解调器,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述第一通信系统中建立第二PDU会话;若所述装置在所述第一通信系统中存在所述第三PDU会话,则所述第三PDU会话为所述第二PDU会话。
结合第五方面,在第五方面的一种可能的实现方式中,若所述装置在所述第二通信系统中开启了第二应用,所述第二通信系统中用于所述第二应用传输数据的PDN连接不支持在所述第一通信系统与第二通信系统之间的互操作,在所述装置从所述第二通信系统转移回所述第一通信系统之后:所述应用处理器,还用于根据所述第二应用的标识,获取用于建立所述第二应用对应的PDU会话的参数信息;若所述装置在所述第一通信系统中不存在第四PDU会话,所述第四PDU会话的上下文中的参数信息包括所述用于建立所述第二应用对应的PDU会话的参数信息中的至少部分信息,所述调制解调器,用于根据所述用于建立所述第二应用对应的PDU会话的参数信息,在所述第一通信系统中建立第五PDU会话;所述应用处理器,还用于使用所述第五PDU会话为所述第二应用传输数据;若所述装置在所述第一通信系统中存在所述第四PDU会话,则所述应用处理器,还用于在所述第一通信系统中使用所述第四PDU会话为所述第二应用传输数据。
结合第五方面,在第五方面的一种可能的实现方式中,所述第一传输信息还包括所述第一PDU会话所使用的数据网络名称DNN;在所述装置从所述第一通信系统转移至所述第二通信系统之后:在所述装置在所述第二通信系统中存在目标PDN连接的情况下,所述应用处理器,还用于在所述第二通信系统中使用所述目标PDN连接为所述第一PDU会话传输数据,其中,所述目标PDN连接为使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
结合第五方面,在第五方面的一种可能的实现方式中,所述第一传输信息包括所述第一PDU会话的上下文;在所述装置从所述第一通信系统转移至所述第二通信系统 之后:所述调制解调器,用于根据所述第一PDU会话的上下文,在所述第二通信系统中建立第一PDN连接;所述应用处理器,还用于在所述第二通信系统中使用所述第一PDN连接为所述第一PDU会话传输数据。
结合第五方面,在第五方面的一种可能的实现方式中,所述第一PDU会话的上下文中包括所述第一PDU会话所使用的数据网络名称DNN;在所述调制解调器用于根据所述第一PDU会话的上下文,在所述第二通信系统中建立所述第一PDN连接之前,所述应用处理器,还用于确定所述装置在所述第二通信系统中不存在使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
结合第五方面,在第五方面的一种可能的实现方式中,所述应用处理器,还用于在所述第一PDU会话不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,保存所述第一传输信息。
结合第五方面,在第五方面的一种可能的实现方式中,所述第一传输信息包括所述第一PDU会话的上下文。
结合第五方面,在第五方面的一种可能的实现方式中,所述第一通信系统为第五代通信系统,所述第二通信系统为第四代通信系统。
第六方面,本申请实施例提供一种用于在不同通信系统间转移场景下的装置,包括:应用处理器,用于在4G通信系统中使用第一公用数据网PDN连接为第一应用传输数据,所述第一PDN连接不支持在4G通信系统与5G通信系统之间的互操作;在所述装置从4G通信系统转移至5G通信系统后,所述应用处理器和/或调制解调器,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话;所述应用处理器,还用于在所述5G通信系统中使用所述第一PDU会话为所述第一应用传输数据,所述第一传输信息包括所述第一应用的标识。
结合第六方面,在第六方面的一种可能的实现方式中,在所述应用处理器和调制解调器,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:所述应用处理器,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;所述调制解调器,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述5G通信系统中建立所述第一PDU会话。
结合第六方面,在第六方面的一种可能的实现方式中,所述应用处理器和调制解调器,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:所述应用处理器,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及若所述装置在5G通信系统中不存在第二PDU会话,所述第二PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,所述调制解调器,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在5G通信系统中建立所述第一PDU会话;
若所述装置在5G通信系统中存在所述第二PDU会话,则所述第二PDU会话为所述第一PDU会话。
结合第六方面,在第六方面的一种可能的实现方式中,在所述第一PDN连接不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,所述应用处理器, 还用于保存所述第一传输信息。
第七方面,本申请实施例提供一种用于在不同通信系统间转移场景下装置,所述终端包括处理器和存储器,所述存储器存储有指令,所述指令被所述处理器运行时,使得所述装置执行如第一方面以及第一方面任一可能的实现方式中所述的方法或者如第二方面以及第二方面任一可能的实现方式中所述的方法。
第八方面,本申请实施例提供一种一种可读存储介质,其特征在于,所述可读存储介质上存储有计算机程序;所述计算机程序被执行时,实现如第一方面以及第一方面任一可能的实现方式中所述的方法或者如第二方面以及第二方面任一可能的实现方式中所述的方法。
本申请的一些实施例中,对于终端内采用不支持第一通信系统与第二通信系统之间的互操作的第一PDU会话传输数据的应用,当终端在从第一通信系统转移至第二通信系统,又从第二通信系统转移回第一通信系统时,在一些实施例中终端根据该应用的第一传输信息,确定第二PDU会话,并使用该第二PDU会话为该应用传输数据。由于第一传输信息中至少包括该应用的标识,终端可保证确定的第二PDU会话能够满足该应用的数据传输质量的要求,从而保证了终端在从第一通信系统转移至第二通信系统,又从第二通信系统转移回第一通信系统时,该应用的数据传输质量。即解决了终端在从第一通信系统转移至第二通信系统,又从第二通信系统转移回第一通信系统时,终端采用一默认的PDU会话为该应用传输数据且该默认的PDU会话不能够满足该应用的数据传输质量的要求而导致的该应用的数据传输质量下降的问题。
附图说明
图1为本申请实施例提供的系统架构的示意图;
图2为本申请实施例提供的用于在不同通信系统间转移场景下的通信方法的流程图一;
图3为本申请实施例提供的用于在不同通信系统间转移场景下的通信方法的交互图一;
图4为本申请实施例提供的用于在不同通信系统间转移场景下的通信方法的流程图二;
图5为本申请实施例提供的用于在不同通信系统间转移场景下的通信方法的交互图二;
图6为本申请实施例提供的用于在不同通信系统间转移场景下的通信方法的流程图三;
图7为本申请一实施例提供的一种用于在不同通信系统间转移场景下的装置的结构示意图;
图8为本申请另一实施例提供的一种用于在不同通信系统间转移场景下的装置的结构示意图;
图9为本申请实施例提供的终端的结构示意图。
具体实施方式
目前的终端设备可以同时支持不同代的移动通信网络,且可以在不同代的移动通信网络之间进行切换。在第一通信系统的数据传输速度等性能优于第二通信系统时,当终端处于第二通信系统内且支持在第一通信系统内的通信时,终端可以从第二通信系统切换至第一通信系统,以获取更高的数据传输速度;同时在某些场景下,终端也可以从第二通信系统切换至第一通信系统,即终端可以在第二通信系统与第一通信系统之间转移。
比如,当前用户的终端处于第一通信系统中,用户正在使用终端设备内安装的应用a且在第一通信系统中用于应用a进行数据传输的PDU会话a不支持互操作。由于某种原因(比如终端进入了不支持第一通信系统的区域后又进入了支持第一通信系统的区域),在用户使用应用a的过程中,终端从第一通信系统移动至第二通信系统后又从第二通信系统中转移回第二通信系统中,原有的PDU会话a已被释放,终端会采用一默认的PDU会话b为应用a传输数据,但是PDU会话b可能不能够满足应用a的数据传输质量的要求而导致该应用a的数据传输质量下降,比如出现应用a运行不流畅,甚至卡顿的现象。本申请提供了用于在不同通信系统间转移场景下的通信方法,本申请的一些实施例能够解决上述问题。
在介绍本申请之前,首先对本申请实施例涉及的技术名词进行介绍说明。
协议数据网络(Protocol Data Network,PDN)连接(Connection或Connectivity):第二通信系统内(比如,4G通信系统内),终端上建立的一组演进分组系统(Evolved Packet System,简称EPS)承载的组合,这些EPS承载具有相同的IP地址和接入点名称(Access Point Name,APN)。在终端和网络侧,通过IP地址和APN来标识一个PDN连接。
PDN连接上下文:可以包括以下信息中的一种或多种:该PDN连接使用的IP地址,APN,PDN网关(PDN GateWay,PGW)地址,以及每个EPS承载的上下文(Context)信息。
EPS承载是指在4G通信系统内的数据传输通道。处于激活(active)态的EPS承载是指4G通信系统内已建立的并且具有一定服务质量(Quality of Service,QoS)的数据传输通道。处于去激活(inactive)态的EPS承载是指第一通信系统内,已被删除的数据传输通道。
PDU会话(Session):第一通信系统内(比如,5G通信系统),终端上建立的一组QoS流(flow)的组合,这些QoS流具有相同的IP地址和数据网络名称(Data Network Name,DNN)。在终端和网络侧,通过IP地址和DNN来标识一个PDU会话。
PDU会话上下文:包括该PDU会话使用的IP地址,DNN,SMF及UPF地址,以及每个QoS流的上下文信息。
PDU会话的业务和会话连续性(Service and Session Continuity,SSC)模式:每个第一通信系统(比如,5G)的PDU会话,有一种连续性的描述。其中,SSC模式1,表示终端在移动过程中,PDU会话能够一直保持连续性;SSC模式2,表示终端在移动过程中,可以先释放现有PDU会话,并建立新的PDU会话代替被释放的PDU会话;SSC模式3,表示终端在移动过程中,可以继续维持现有PDU会话一段时间,同时建立新的PDU会话来代替原有PDU会话,在现有PDU会话时间到期后,释放现有PDU会话,仅保留新的PDU会话。
QoS流信息包括:该QoS流的QoS信息、QoS流标识(QoS Flow Identity,QFI)、以及QoS流模板的一个或多个信息的组合。比如,在5G通信系统中,QoS信息进一步可以包括该QoS所对应的5G QoS指示符(5G QoS Indicator,5QI),分配与保持优先级(Allocation and Retention Priority,ARP),保证流比特率(Guaranteed Flow Bit Rate,GFBR),最大流比特率(Maximum Flow Bit Rate,MFBR),通知控制(Notification Control)的一个或多个信息的组合。QoS流信息用于描述该QoS流,包括但不限于上面描述的信息。其中,QoS流信息也可以称为QoS参数,在本申请实施例中的QoS流信息可以替换为QoS参数。
本申请的各实施例可以应用的通信系统的系统架构如图1所示,该系统架构包括第一通信系统和第二通信系统,图1中以第一通信系统为第五代(Fifth Generation,5G)通信系统、第二通信系统为第四代(Forth Generation,4G)通信系统为例进行说明。
参见图1,该通信系统包括终端、演进的UMTS陆地无线接入网(Evolved UMTS Terrestrial Radio Access Network,E-UTRAN)、移动性管理实体(Mobility Management Entity,MME)、服务网关(Serving Gateway,SGW),接入与移动性管理功能(Access and Mobility management Function,AMF)以及5G无线接入网(5G Radio Access Network,5G-RAN),以及第一通信系统的核心网设备100,第二通信系统的核心网设备300,第一通信系统和第二通信系统合设的核心网设备200。可以理解的是,MME和AMF也属于核心网设备。为了图示的清楚,第一通信系统的核心网设备100与AMF的具体连接关系未示出,具体连接关系与AMF与第一通信系统和第二通信系统合设的核心网设备200的连接相同;为了图示的清楚,第二通信系统的核心网设备300与SGW的具体连接关系未示出,具体连接关系与SGW与第一通信系统和第二通信系统合设的核心网设备200的连接相同。
其中,E-UTRAN为4G侧基站,终端通过该基站可以接入4G通信系统;5G-RAN为5G侧基站,终端通过该基站可以接入5G通信系统,5G-RAN可以是对E-UTRAN进行进一步演进后的,终端可以通过该基站接入5G通信系统的基站,或5G-RAN可以是专门用于终端接入5G通信系统的基站。
MME为4G核心网设备,负责对终端进行鉴权、授权,移动性管理,会话管理;终端在4G的PDN连接的关联EPS承载标识(Linked EPS Bearer ID,LBI)即由该实体分配。SGW为4G核心网设备(核心网网关),负责数据的转发,下行数据存储等。
AMF为5G核心网设备,用于对用户进行鉴权、授权,对用户的移动性进行管理。
第一通信系统和第二通信系统和合设的核心网设备200包括:用户面功能(User Plane Function,UPF)+PDN网关的用户面(PDN Gateway-User plane,PGW-U)、会话管理功能(Session Management Function,SMF)+PDN网关的控制面(PDN Gateway-Control plane,PGW-C)、策略控制功能(policy control Function,PCF)+策略与计费规则功能单元(Policy and Charging Rules Function,PCRF)、归属签约服务器(Home Subscriber Server,HSS)+统一数据管理(Unified Data Management,UDM)。
UPF+PGW-U为4G和5G共用的核心网设备,即4G和5G合设的核心网设备,包括UPF和PGW-U的功能。其中,UPF是5G核心网的用户面设备,为终端的PDU会话提供用户面服务,是运营商网络与外部网络间的接口网关。PGW-U是4G核心网 的用户面设备,为终端的PDN连接提供用户面服务,是运营商网络与外部网络间的接口网关。UPF+PGW-U也可被称为PGW-U+UPF,只要是包含UPF和PGW-U功能的设备均与本设备相同。
SMF+PGW-C为4G和5G共用的核心网设备,即4G和5G合设的核心网设备,包括SMF和PGW-C的功能。其中,SMF是5G核心网的控制面设备,为终端的PDU会话提供控制面服务;对5G的PDU会话进行管理,对5G的QoS进行管理,负责为终端分配IP地址,负责为终端选择UPF。PGW-C为4G核心网的控制面设备,为终端的PDN连接提供用户面服务;负责为终端分配IP地址,为终端建立EPS承载。SMF+PGW-C也可被称为PGW-C+SMF,只要是包含SMF和PGW-C功能的设备均与本设备相同。
PCF+PCRF为4G和5G共用的核心网设备,即4G和5G合设的核心网设备,包括PCF和PCRF。其中,PCRF为4G核心网设备,负责产生用户建立数据承载(Bearer)的策略。PCF为5G核心网设备,与PCRF功能类似。PCF+PCRF也可被称为PCRF+PCF,只要是包含PCF和PCRF功能的设备均与本设备相同。
UDM+HSS为4G和5G共用的核心网设备,即4G和5G合设的核心网设备,包括HSS和UDM。其中,HSS为4G核心网设备,用于保存用户的签约数据。UDM为5G核心网设备,用于保存用户的签约数据。UDM+HSS也可被称为HSS+UDM,只要是包含HSS和UDM功能的设备均与本设备相同。
N26接口是MME和AMF间的接口,目前该接口是可选的。当终端在4G和5G间移动时,通过N26接口可以进行终端上下文的传递。
第一通信系统的核心网设备100包括:UPF、SMF、PCF、UDM。
第二通信系统的核心网设备300包括:PGW-U、PGW-C、PCRF、HSS。
本申请实施例中的终端可为手机、平板电脑、笔记本电脑、上网本、便携式电子设备等。
下面结合具体的实施例,对本申请的用于在不同通信系统间转移场景下的通信方法进行说明。以下以第一通信系统为5G通信系统、第二通信系统为4G通信系统为例进行说明。
首先对终端在第一通信系统中通过PDU会话为应用传输数据的过程中,终端从第一通信系统转移(move或transfer)至第二通信系统后,又转移回第一通信系统的场景所对应的用于在不同通信系统间转移场景下的通信方法进行说明。
这里,终端从第一通信系统转移至第二通信系统,可以指终端在空闲态(idle)下从第一通信系统选择(select)或重选(reselect)至第二通信系统,或终端在连接态(connected)下从第一通信系统切换(handover)至第二通信系统。
终端从第二通信系统转移回第二通信系统,可以指终端在空闲态(idle)下从第二通信系统选择(select)或重选(reselect)至第一通信系统,或终端在连接态(connected)下从第二通信系统切换(handover)至第一通信系统。
图2为本申请实施例提供的用于在不同通信系统间转移场景下的通信方法的流程图一,参见图2,本实施例的方法包括:
步骤S201、终端在第一通信系统中使用第一PDU会话为第一应用传输数据,该第一PDU会话不支持在该第一通信系统与第二通信系统之间的互操作(interworking)。
具体地,本实施例中的第一通信系统可为第五代通信系统,第二通信系统可为第四代通信系统。
第一通信系统中的PDU会话与第二通信系统中的PDN连接是相对应的概念。一个PDU会话可以包括多个QoS流,一个PDN连接可以包括多个EPS承载,终端在第一通信系统中可以建立多个PDU会话,该多个PDU会话中可以存在一个或者多个支持在该第一通信系统与第二通信系统之间的互操作的PDU会话,支持在该第一通信系统与第二通信系统之间的互操作的PDU会话具有如下性质:当终端从第一通信系统转移至第二通信系统时,可以自动在第二通信系统内建立或生成与该PDU会话相对应的PDN连接,该PDU会话与该PDN连接具有相同的IP地址。
终端在第一通信系统中建立的多个PDU会话中也存在一个或多个不支持在该第一通信系统与第二通信系统之间的互操作的PDU会话,不支持在该第一通信系统与第二通信系统之间的互操作的PDU会话具有如下性质:当终端从第一通信系统转移到第二通信系统时,不能够在第二通信系统内建立与该PDU会话相对应的PDN连接,即不能够建立或生成与该PDU会话使用相同的IP地址的PDN连接,且在终端在接入第二通信系统后,会本地删除该PDU会话。
本实施例的用于在不同通信系统间转移场景下的通信方法可以适用于通过不支持在该第一通信系统与第二通信系统之间的互操作的第一PDU会话传输数据的第一应用。
该第一应用在第一通信系统中被启动后,终端使用第一PDU会话为该第一应用传输数据。其中,本实施例中的第一应用被启动是指:第一应用进入运行状态或该第一应用被激活。在第一应用被启动后,该第一应用在前台运行或后台运行。
其中,终端获取第一PDU会话的过程可如下:
终端通过用户设备路线选择策略(user equipment route selection policy,URSP)对第一应用进行过滤,获取用于建立该第一应用对应的PDU会话的参数信息。其中,用于建立该第一应用对应的PDU会话的参数信息可包括:DNN信息、SSC模式信息、IP地址信息、QoS流信息、切片标识、接入方式优先级等等。其中,QoS流信息包括以下信息中的一个或者多个:会话聚合最大比特速率(session AMBR),SSC模式,PDU会话标识,QoS规则。该QoS规则可以为一个QoS规则,也可以为多个QoS规则。具体的,QoS规则包括以下信息中的一个或多个:QoS规则标识,QoS流标识,优先级(precedence),包过滤器(packet filter);或者,QoS规则包括以下信息中的一个或多个:QoS规则标识,QoS流标识,优先级,包过滤器标识。其中,包过滤器包括包过滤器属性(packet filter attribute)和包过滤器标识(packet filter ID)。进一步的,QoS流信息还可以包括QoS流所对应的5QI,ARP,GFBR,MFBR和通知控制的一个或多个信息的组合。
其中,该第一应用对应的PDU会话是指能够用于该第一应用传输数据的PDU会话。
在一种实现方式中,终端在获取到用于建立该第一应用对应的PDU会话的参数信 息后,确定已建立的PDU会话中是否存在能够为第一应用传输数据的PDU会话。具体地,若终端已建立的PDU会话中存在上下文中的参数信息为用于建立该第一应用对应的PDU会话的参数信息中的至少部分信息的PDU会话时,终端确定已建立的PDU会话中存在能够为第一应用传输数据的PDU会话,否则,终端确定已建立的PDU会话中不存在能够为第一应用传输数据的PDU会话。
示例性地,终端已建立的PDU会话中存在PDU会话a,PDU会话a的上下文中的参数信息为用于建立该第一应用对应的PDU会话的参数信息中的至少部分信息,比如:用于建立该第一应用对应的PDU会话的参数信息中的DNN信息中包括DNN 1和DNN 2,PDU会话a上下文中的DNN信息为DNN 1。该PDU会话a为能够为第一应用传输数据的PDU会话,或者说,该PDU会话a为该第一应用对应的PDU会话。
当终端确定已建立的PDU会话中存在能够为第一应用传输数据的PDU会话时,终端从已建立的PDU会话中的能够为第一应用传输数据的PDU会话中确定第一PDU会话,例如第一PDU会话为上述示例中的PDU会话a。进一步地,此时终端内还存储有该第一PDU会话不支持在该第一通信系统与该第二通信系统之间的互操作的信息,终端根据该信息确定该第一PDU会话不支持在该第一通信系统与该第二通信系统之间的互操作。
当终端确定已建立的PDU会话中不存在能够为第一应用传输数据的PDU会话时,终端根据用于建立该第一应用对应的PDU会话的参数信息,建立第一PDU会话。
其中,终端根据用于建立该第一应用对应的PDU会话的参数信息,通过和第一通信系统对应的核心网设备之间的交互建立起第一PDU会话,具体实现可参照现有建立PDU会话的方法,本实施例中不再赘述。其中,第一通信系统对应的核心网设备为第一通信系统和第二通信系统合设的核心网设备(比如图1中的200)中第一通信系统的核心网设备,或者,第一通信系统对应的核心网设备为为第一通信系统独立设置的核心网设备(比如图1中的100)。
在建立第一PDU会话的过程中,终端会向第一通信系统对应的核心网设备发送PDU会话建立请求,PDU会话建立请求中包括用于建立该第一应用对应的PDU会话的参数信息。第一通信系统对应的核心网设备会从用于建立该第一应用对应的PDU会话的参数信息中确定目标参数信息,并将确定的目标参数信息发送至终端,以使终端根据该目标参数信息建立该第一PDU会话。该目标参数信息为第一PDU会话的上下文中包括的参数信息。
若在建立该第一PDU会话的过程中,终端并没有从第一通信系统对应的核心网设备接收到上述目标参数信息对应的用于在第二通信系统中建立PDN连接的参数信息,则终端确定该第一PDU会话不支持在该第一通信系统与第二通信系统之间的互操作。
综上,终端在通过上述方法获取到该第一PDU会话后,便可采用该第一PDU会话为该第一应用传输数据。
进一步地,在终端确定该第一PDU会话不支持在该第一通信系统与第二通信系统之间的互操作后,终端可以保存该第一应用的第一传输信息。其中,该第一PDU会话的传输信息可包括第一应用的标识,进一步地,第一PDU会话的传输信息还可包括该第一PDU会话的上下文。
步骤S202、在该终端通过该第一PDU会话为该第一应用传输数据的过程中,该终端从该第一通信系统转移至该第二通信系统。
可选的,该终端可通过切换过程从第一通信系统转移至第二通信系统:该终端在连接态下的切换过程中,接收到切换命令(handover command),该切换命令可以是第一通信系统的基站发送给终端的。
可选的,该终端可通过选择或重选的方式从第一通信系统转移至第二通信系统。
在终端从该第一通信系统转移至该第二通信系统后,在第一通信系统中为第一应用传输数据的第一PDU会话会被释放。
步骤S203、在该终端从该第二通信系统转移回该第一通信系统后,该终端在该第一通信系统中至少根据该第一应用的第一传输信息,获取第二PDU会话,并使用第二PDU会话为该第一应用传输数据,该第一传输信息包括该第一应用的标识。
可选的,该终端可通过切换过程从第二通信系统转移至第一通信系统:该终端在连接态下的切换过程中,接收到切换命令(handover command),该切换命令可以是第二通信系统的基站发送给终端的。
可选的,该终端可通过选择或重选的方式从第二通信系统转移至第一通信系统。
在该终端从该第二通信系统转移回该第一通信系统后,由于第一PDU会话已被释放,为了继续为第一应用传输数据,需要获取另一PDU会话(本实施例中称为第二PDU会话)为该第一应用传输数据。其中,终端在该第一通信系统中至少根据该第一应用的第一传输信息,获取第二PDU会话,可通过如下四种方式但不限于如下的四种方式实现:
第一种方式:若该第一应用的第一传输信息还包括:第一PDU会话的上下文;则终端根据第一PDU会话的上下文,建立第二PDU会话。该第一应用使用该第二PDU会话传输数据。
该方式中,根据第一PDU会话的上下文建立的第二PDU会话,与第一PDU会话的QoS流等信息相同,使用该第二PDU会话为第一应用传输数据,可实现第一应用传输数据的质量不降低的目的。同时,该方式中通过根据第一PDU会话的上下文,建立第二PDU会话,第二PDU会话建立的效率比较高。
第二种方式可通过步骤b1~b2实现:
b1、终端根据第一应用的标识,获取用于建立该第一应用对应的PDU会话的参数信息。
终端通过URSP对第一应用进行过滤,获取用于建立该第一应用对应的PDU会话的参数信息。
b2、终端根据用于建立该第一应用对应的PDU会话的参数信息,建立第二PDU会话。
终端根据用于建立该第一应用对应的PDU会话的参数信息,建立第二PDU会话的方法,参照上述“根据用于建立该第一应用对应的PDU会话的参数信息,建立第一PDU会话”的方法,此处不再赘述。
该方式可在第一传输信息中不存在第一PDU的上下文时,实现第二PDU会话的建立。同时该方式中,根据第一应用的标识,能够获取到用于建立该第一应用对应的 PDU会话的参数信息,即能够获取到与该第一应用的数据传输匹配的PDU会话的参数信息,使用根据与该第一应用的数据传输匹配的PDU会话的参数信息建立的第二PDU会话为第一应用传输数据,可实现第一应用传输数据的质量不降低的目的。
第三种方式可通过步骤c1~c2实现:
c1、终端根据该第一应用的标识,获取用于建立该第一应用对应的PDU会话的参数信息;
c2、若终端在第一通信系统中不存在第三PDU会话,第三PDU会话的上下文中的参数信息包括用于建立该第一应用对应的PDU会话的参数信息中的至少部分信息,终端根据用于建立第一应用对应的PDU会话的参数信息,在第一通信系统中建立第二PDU会话。
与第二种方式中不同的是,该方式中需要确定第一通信系统中是否存在第三PDU会话,第三PDU会话满足如下条件:第三PDU会话的上下文中的参数信息包括用于建立该第一应用对应的PDU会话的参数信息中的至少部分信息。在确定第一通信系统中不存在第三PDU会话的情况下,终端才会根据用于建立第一应用对应的PDU会话的参数信息,在第一通信系统中建立第二PDU会话。
基于与第二种方式相同的理由该方式也可实现该应用传输数据的质量不降低的目的,且该方式还可以降低终端的功耗。
第四种方式可通过步骤d1~d2实现:
d1、终端根据该第一应用的标识,获取用于建立该第一应用对应的PDU会话的参数信息;
d2、终端在第一通信系统中存在第三PDU会话,第三PDU会话的上下文中的参数信息包括用于建立该第一应用对应的PDU会话的参数信息中的至少部分信息的情况下,终端获取第三PDU会话作为第二PDU会话。
此时,终端使用第二PDU会话为该第一应用传输数据,包括:终端使用该第三PDU会话为该第一应用传输数据,该第三PDU即为第二PDU会话。
该方式也可实现该应用传输数据的质量不降低的目的,且该方式还可以降低终端的功耗。
在终端获取了第二PDU会话后,便可根据该第一应用的标识,通过该第二PDU会话为该第一应用传输数据。具体地,根据该第一应用的标识通过该第二PDU会话为该第一应用传输数据是指:终端根据第一传输信息中包括的该第一应用的标识获知需要第二PDU会话为该第一应用传输数据,将第一应用与该第二PDU会话进行绑定,实现通过该第二PDU会话为该第一应用传输数据的目的。
下面结合图3对上述步骤S201~步骤S203所对应的终端的内部交互的进行说明。
终端可以包括调制解调器(Modem)和应用处理器。在一种可能的实现方式中,应用处理器可理解为包括终端的Framework中的处理单元和用于控制应用(application,简称APP)的控制单元的处理器。在另一种可能的实现方式中,应用处理器可理解包括终端的Framework单元和APP单元的构件。其中,Framework还可称为应用框架层,是对运行库层的进一步封装,通过接口提供给上层调用,完成对应用层的业务支撑。
图3为本申请实施例提供的用于在不同通信系统间转移场景下的通信方法的交互 图一,参见图3,方法包括:
步骤S301、在第一应用启动后,应用处理器采用URSP对第一应用进行过滤,获取用于建立第一应用对应的PDU会话的参数信息,并确定终端内已建立的PDU会话中是否存在能够为第一应用传输数据的PDU会话。
若终端内已建立的PDU会话中存在能够为第一应用传输数据的PDU会话,执行步骤S302~步骤S303:
步骤S302、应用处理器从终端内已建立的PDU会话中的能够为第一应用传输数据的PDU会话中确定第一PDU会话。
步骤S303、应用处理器确定第一PDU会话不支持在第一通信系统与第二通信系统之间的互操作,并保存第一应用的第一传输信息,第一传输信息包括第一应用的标识。
其中,在第一PDU会话不支持在第一通信系统与第二通信系统之间的互操作的情况下,终端内存储有指示第一PDU会话不支持在第一通信系统与第二通信系统之间的互操作的信息,应用处理器会根据该信息确定第一PDU会话不支持在第一通信系统与第二通信系统之间的互操作。
若终端内已建立的PDU会话中不存在能够为第一应用传输数据的PDU会话,执行步骤S304~步骤S307:
步骤S304、应用处理器将用于建立第一应用对应的PDU会话的参数信息发送至调制解调器。
步骤S305、调制解调器建立第一PDU会话,并确定第一PDU会话不支持在第一通信系统与第二通信系统之间的互操作。
具体地,调制解调器通过与第一通信系统对应的核心网设备交互建立第一PDU会话,调制解调器确定在建立第一PDU会话的过程中,没有从第一通信系统对应的核心网设备接收到与上述目标参数信息对应的用于建立PDN连接的参数信息,即调制解调器确定第一PDU会话不支持在第一通信系统与第二通信系统之间的互操作。
步骤S306、调制解调器向应用处理器发送指示信息,指示信息指示第一PDU会话不支持互操作。
步骤S307、应用处理器保存第一应用的第一传输信息。
终端从第一通信系统转移至第二通信系统时:
步骤S308、调制解调器确定终端从第一通信系统转移至第二通信系统,并删除第一PDU会话。
步骤S309、调制解调器发送第一通知消息至应用处理器,第一通知消息用于指示终端已从第一通信系统转移至第二通信系统。
终端从第二通信系统转移回第一通信系统时:
步骤S310、调制解调器确定终端从第二通信系统转移回第一通信系统。
步骤S311、调制解调器发送第二通知消息至应用处理器,第二通知消息用于指示终端从第二通信系统转移回第一通信系统。
在第一传输信息还包括第一PDU会话的上下文时,执行步骤S312~步骤S313:
步骤S312、应用处理器将第一PDU会话的上下文发送至调制解调器。
具体地,如步骤S303和步骤S307中所述,终端的应用处理器保存第一应用的第一传输信息,因此,终端的应用处理器将第一PDU会话的上下文发送至调制解调器。
步骤S313、调制解调器根据第一PDU会话的上下文,建立第二PDU会话。
在第一传输信息不包括第一PDU会话的上下文时,执行步骤S314~步骤S317:
步骤S314、应用处理器根据第一应用的标识,获取用于建立第一应用对应的PDU会话的参数信息。
具体地,应用处理器可采用URSP对第一应用进行过滤,获取用于建立第一应用对应的PDU会话的参数信息。
步骤S315、应用处理器确定在第一通信系统中是否存在第三PDU会话,第三PDU会话的上下文中的参数信息包括用于建立第一应用对应的PDU会话的参数信息中的至少部分信息。
该步骤是可选地。
在不存在步骤S315或存在步骤S315且在第一通信系统中不存在第三PDU会话的情况下,执行步骤S316~步骤S318:
步骤S316、应用处理器将用于建立第一应用对应的PDU会话的参数信息发送至终端的调制解调器。
步骤S317、调制解调器根据用于建立第一应用对应的PDU会话的参数信息,在第一通信系统中建立第二PDU会话。
步骤S318、应用处理器使用第二PDU会话为第一应用传输数据。
在存在步骤S315且在第一通信系统中存在第三PDU会话的情况下,执行步骤S319:
步骤S319、应用处理器使用第三PDU会话为第一应用传输数据,此时,第三PDU会话也可称为第二PDU会话。
综上,对于终端内采用不支持第一通信系统与第二通信系统之间的互操作的第一PDU会话传输数据的应用,当终端在从第一通信系统转移至第二通信系统,又从第二通信系统转移回第一通信系统时,本实施例中终端根据该应用的第一传输信息,确定第二PDU会话,并使用该第二PDU会话为该应用传输数据。由于第一传输信息中至少包括该应用的标识,终端可保证确定的第二PDU会话能够满足该应用的数据传输质量的要求,从而保证了终端在从第一通信系统转移至第二通信系统,又从第二通信系统转移回第一通信系统时,该应用的数据传输质量。即解决了终端在从第一通信系统转移至第二通信系统,又从第二通信系统转移回第一通信系统时,终端采用一默认的PDU会话为该应用传输数据且该默认的PDU会话不能够满足该应用的数据传输质量的要求而导致的该应用的数据传输质量下降的问题。
其次,结合具体的实施例对在第一通信系统使用第一PDU会话传输数据的第一应用,第一PDU会话不支持第一通信系统与第二通信系统之间的互操作,当终端从第一通信系统转移至第二通信系统时,所对应的用于在不同通信系统间转移场景下的通信方法进行说明。
图4为本申请实施例提供的用于在不同通信系统间转移场景下的通信方法的流程图二,参见图4,本实施例的方法包括:
步骤S401、在终端使用第一PDU会话为第一应用传输数据的过程中,该终端从第一通信系统转移至第二通信系统,第一PDU会话不支持在第一通信系统与第二通信系统之间的互操作。
具体地,该步骤的具体实现可以参照图2所示的实施例中步骤S202中的阐述,本实施例中不再赘述。
步骤S402、终端确定第二通信系统中是否存在使用目标APN的目标PDN连接,目标APN为该第一PDU会话所使用的DNN在第二通信系统中对应的APN,第一应用的第一传输信息中包括该第一PDU会话的上下文,该第一PDU会话的上下文中包括该第一PDU会话所使用的DNN。
具体地,每个DNN在第二通信系统中均具有与其对应的APN。或者说,每个DNN在第二通信系统中均具有其映射的APN。
当该第一应用的第一传输信息中包括该第一PDU会话的上下文,该第一PDU会话的上下文中包括该第一PDU会话所使用的DNN时,终端获取在第二通信系统中与该第一PDU会话所使用的DNN对应的APN,该APN在本实施例中称为目标APN。其中,在第二通信系统中,终端可通过本地映射的方法获取到在第二通信系统中与该第一PDU会话所使用的DNN对应的该目标APN。本地映射的方法可参照现有的方法,此处不再赘述。
接着,终端确定终端在第二通信系统中存在的一个或多个PDN连接中是否存在使用目标APN的目标PDN连接。
可以理解的是,若终端在第二通信系统中存在目标PDN连接,则在第一通信系统中可存在一个支持互操作的目标PDU会话,该目标PDU会话所使用的DNN与第一PDU对话所使用的DNN相同,但是该目标PDU会话对话没有用于第一应用的数据传输。那么,该目标PDN连接即是该目标PDU会话在终端转移至第二通信系统之后终端自动建立的与该目标PDU会话对应的PDN连接,该目标PDU会话和该目标PDN连接使用相同的IP地址。
当第二通信系统中存在目标PDN连接时,执行步骤S403。
步骤S403、终端使用目标PDN连接为该第一应用传输数据。
具体地,该终端可根据该第一应用的标识,通过该目标PDN连接为该第一应用传输数据。其中,根据该第一应用的标识,通过该目标PDN连接为该第一应用传输数据是指:终端根据第一传输信息中包括的该第一应用的标识获知需要目标PDN连接为该第一应用传输数据,将该第一应用与该目标PDN连接进行绑定,实现通过该目标PDN连接为该第一应用传输数据的目的。
当第二通信系统中不存在目标PDN连接时,则执行步骤S404~步骤S405。
步骤S404、终端根据该第一PDU会话的上下文,建立第一PDN连接。
具体地,终端获取第一PDU会话的上下文中的各第一参数对应的用于建立PDN连接的参数,终端根据各第一参数对应的用于建立PDN连接的参数,建立目标PDN连接,即终端建立的第一PDN连接的所使用的参数中包括各第一参数对应的用于建立PDN连接的参数,例如第一PDN连接所使用的APN为上述的目标APN。其中,第一PDU会话的上下文中的第一参数是指第一PDU会话的上下文中具有对应的用于建立 PDN连接的参数的参数,第一PDU会话上下文中的参数DNN即为第一PDU会话的上下文中的一个第一参数。
可以理解的是,第一PDN连接所使用的IP地址与该第一PDU会话所使用的IP地址不相同。其中,终端建立PDN连接的过程可参照现有建立PDN连接的方法,本实施例中不再赘述。
步骤S405、终端使用第一PDN连接为该第一应用传输数据。
具体地,该终端可根据该第一应用的标识,通过该第一PDN连接为该第一应用传输数据。其中,根据该第一应用的标识,通过该第一PDN连接为该第一应用传输数据是指:终端根据第一传输信息中包括的该第一应用的标识获知需要使用第一PDN连接为该第一应用传输数据,将该第一应用与该第一PDN连接进行绑定,实现通过该第一PDN连接为该第一应用传输数据的目的。
下面结合图5对终端从第一终端系统转移至第二通信系统所对应的终端的内部交互进行说明。
图5为本申请实施例提供的用于在不同通信系统间转移场景下的通信方法的交互图二,参见图5,方法包括:
步骤S501、调制解调器确定终端从第一通信系统转移至第二通信系统。
步骤S502、调制解调器发送第一通知消息至应用处理器,第一通知消息用于指示终端已从第一通信系统转移至第二通信系统。
步骤S503、应用处理器确定第二通信系统中是否存在使用目标APN的目标PDN连接。
若第二通信系统中存在目标PDN连接,执行步骤S504:
步骤S504、应用处理器确定目标PDN为第一应用在第二通信系统中传输数据所使用的PDN连接,并获取目标PDN连接的IP地址,以使用目标PDN连接为第一应用传输数据。
若第二通信系统中不存在目标PDN连接,执行步骤S505~步骤S509:
步骤S505、应用处理器获取第一PDU会话的上下文中的第一参数对应的用于建立PDN连接的参数。
步骤S506、应用处理器将第一PDU会话的上下文中的第一参数对应的用于建立PDN连接的参数发送至调制解调器;
步骤S507、调制解调器根据第一PDU会话的上下文中的第一参数对应的用于建立PDN连接的参数,建立第一PDN连接。
步骤S508、应用处理器使用第一PDN连接为第一应用传输数据。
综上,对于在第一通信系统采用不支持第一通信系统与第二通信系统之间的互操作的第一PDU会话传输数据的第一应用,当终端从第一通信系统转移至第二通信系统时,本实施例中通过根据第一应用的传输信息中的第一PDU会话的上下文在第二通信系统中获取为该应用传输数据的PDN连接,可以使得第一应用可以在第二通信系统中继续传输数据,保证了终端在不同的通信系统之间转移时,第一应用的正常运行。
接着,采用具体的实施例对终端在第二通信系统中启动了第二应用,且在第二通信系统中第二应用传输数据所使用的PDN连接不支持在第一通信系统和第二通信系 统之间的互操作时,终端从第二通信系统转移至第一通信系统后,第二应用传输数据的方法进行说明。
图6为本申请实施例提供的用于在不同通信系统间转移场景下的通信方法的流程图三,参见图6,本实施例的方法包括:
步骤S601、终端在第二通信系统中使用第二PDN连接为第一应用传输数据,第二PDN连接不支持在第二通信系统与第一通信系统之间的互操作。
本实施例中的第二应用实当终端处于第二通信系统中时所开启的应用。终端在确定第二PDN连接不支持在第二通信系统与第一通信系统之间的互操作后,终端可保存第二应用的第二传输信息,第二传输信息包括第二应用的标识。
其中,终端确定第二PDN连接不支持在第一通信系统和第二通信系统之间的互操作的方法可以是:在建立该第二PDN连接的过程中,没有从第二通信系统的核心网设备接收到该第二PDN连接所使用的参数所对应的用于建立PDU会话的参数。
步骤S602、终端从第二通信系统转移至第一通信系统。
步骤S603、终端至少根据第二应用的第二传输信息,获取第五PDU会话,并在第一通信系统中使用第五PDU会话为第一应用传输数据。
在该终端从该第二通信系统转移回该第一通信系统后,需要获取一PDU会话(本实施例中称为第五PDU会话)为该第二应用传输数据。其中,终端在该第一通信系统中至少根据该第二应用的第一传输信息,获取第五PDU会话,可通过如下三种方式但不限于如下的三种方式实现:
第一种方式可通过步骤e1~e2实现:
e1、终端根据第二传输信息中包括的第二应用的标识,获取用于建立第二应用对应的PDU会话的参数信息。
终端通过URSP对第二应用进行过滤,获取用于建立该第二应用对应的PDU会话的参数信息。
e2、终端根据用于建立该第二应用对应的PDU会话的参数信息,建立第五PDU会话。
终端根据用于建立该第二应用对应的PDU会话的参数信息,建立第五PDU会话,参照上述“根据用于建立该第一应用对应的PDU会话的参数信息,建立第一PDU会话”的方法,此处不再赘述。
该方式中,根据第二应用的标识,能够获取到用于建立该第二应用对应的PDU会话的参数信息,即能够获取到与该第二应用的数据传输匹配的PDU会话的参数信息,使用根据与该第二应用的数据传输匹配的PDU会话的参数信息建立的第五PDU会话为第二应用传输数据,可实现该第二应用传输数据的质量不降低的目的。
第二种方式可通过步骤f1~f2实现:
f1、终端根据该第二应用的标识,获取用于建立该第二应用对应的PDU会话的参数信息;
f2、若终端在第一通信系统中不存在第四PDU会话,第四PDU会话的上下文中的参数信息包括用于建立该第一应用对应的PDU会话的参数信息中的至少部分信息,终端根据用于建立第二应用对应的PDU会话的参数信息,在第一通信系统中建立第五 PDU会话。
与第一种方式中不同的是,该方式中需要确定第一通信系统中是否存在第四PDU会话,第四PDU会话满足如下条件:第四PDU会话的上下文中的参数信息包括用于建立该第二应用对应的PDU会话的参数信息中的至少部分信息。在确定第一通信系统中不存在第四PDU会话的情况下,终端才会根据用于建立第二应用对应的PDU会话的参数信息,在第一通信系统中建立第五PDU会话。
其中,终端判断终端在第一通信系统中是否存在第四PDU会话的方法可参照图2所示的实施例中终端判断终端在第一通信系统中是否存在第一PDU会话的方法,此处不再赘述。
基于与第二种方式相同的理由该方式也可实现该应用传输数据的质量不降低的目的,且该方式还可以降低终端的功耗。
第三种方式可通过步骤g1~g2实现:
g1、终端根据该第二应用的标识,获取用于建立该第二应用对应的PDU会话的参数信息;
g2、终端在第一通信系统中存在第四PDU会话,第四PDU会话的上下文中的参数信息包括用于建立该第二应用对应的PDU会话的参数信息中的至少部分信息的情况下,终端获取第四PDU会话作为第五PDU会话。
此时,终端使用第五PDU会话为该第一应用传输数据,包括:终端使用该第四PDU会话为该第一应用传输数据,该第四PDU即为第五PDU会话。
该方式也可实现该应用传输数据的质量不降低的目的,且该方式还可以降低终端的功耗。
在终端获取了第五PDU会话后,便可根据该第二应用的标识,通过该第五PDU会话为该第二应用传输数据。具体地,根据该第二应用的标识通过该第五PDU会话为该第二应用传输数据是指:终端根据第二传输信息中包括的该第二应用的标识获知需要第四PDU会话为该第二应用传输数据,将第二应用与该第五PDU会话进行绑定,实现通过该第五PDU会话为该第二应用传输数据的目的。
综上,若在第二通信系统启动了一应用后,该应用传输数据所使用的PDN连接不支持第一通信系统和第二通信系统之间的互操作,在终端从第二通信系统转移至第一通信系统时,终端根据该应用的标识,可确定一个能够满足该应用的数据传输质量要求的PDU会话,并使用该PDU会话为该应用传输数据,从而保证了终端在从第二通信系统转移至第一通信系统时,该应用的数据传输质量。
以上,对本申请实施涉及的用于在不同通信系统间转移场景下的通信方法进行了说明,下面采用具体地实施例对本申请涉及的用于在不同通信系统间转移场景下的装置进行说明。
图7为本申请一实施例提供的一种用于在不同通信系统间转移场景下的装置的结构示意图。如图7所示,本申请一实施例提供了一种用于在不同通信系统间转移场景下的装置700。该装置可以是终端设备,也可以是终端设备的部件(例如,集成电路,芯片等等)。该装置也可以是其他通信模块,用于实现本申请方法实施例中第一节点或第二节点对应的方法。该装置700可以包括:第一处理模块701(第一处理单元)和第 二处理模块702(第二处理单元)。可选的,还可以包括收发模块703(收发单元)和存储模块704(存储单元)。
在一种可能的设计中,如图7中的一个或者多个模块可能由一个或者多个处理器来实现,或者由一个或者多个处理器和存储器来实现;或者由一个或多个处理器和收发器实现;或者由一个或者多个处理器、存储器和收发器实现,本申请实施例对此不作限定。所述处理器、存储器、收发器可以单独设置,也可以集成。
所述装置具备实现本申请实施例描述的终端设备的功能,比如,所述装置包括终端设备执行本申请实施例描述的终端设备涉及步骤所对应的模块或单元或手段(means),所述功能或单元或手段(means)可以通过软件实现,或者通过硬件实现,也可以通过硬件执行相应的软件实现,还可以通过软件和硬件结合的方式实现。详细可进一步参考前述对应方法实施例中的相应描述。
可选的,本申请实施例中的装置700中各个模块可以用于执行本申请实施例中的图2或图3或图4或图5或图6所示的实施例中描述的方法。
在第一种可能的实施方式中,本实施例的用于在不同通信系统间转移场景下的装置700包括:第一处理模块701和第二处理模块702。
第一处理模块701,用于在第一通信系统中使用第一协议数据单元PDU会话为第一应用传输数据,所述第一PDU会话不支持在所述第一通信系统与第二通信系统之间的互操作;第二处理模块702,用于所述装置700从所述第一通信系统转移至所述第二通信系统;在所述装置700从所述第二通信系统转移回所述第一通信系统后,第二处理模块和/或所述第一处理模块,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,所述第一传输信息包括所述第一应用的标识;所述第一处理模块,还用于在所述第一通信系统中使用所述第二PDU会话为所述第一应用传输数据。
可选地,所述第一传输信息还包括:所述第一PDU会话的上下文;所述第二处理模块702,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述第二处理模块702,具体用于根据所述第一PDU会话的上下文,建立所述第二PDU会话。
可选地,所述第二处理模块702和所述第一处理模块701用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述第一处理模块701,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;所述第二处理模块702,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,建立所述第二PDU会话。
可选地,所述第二处理模块702和所述第一处理模块701,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述第一处理模块701,具体用于:根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及若所述装置700在所述第一通信系统中不存在第三PDU会话,所述第三PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,所述第二处理模块702,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述第一通信系统中建立第二PDU会话;若所述装置700在所述第一通信系统中存在所述第三PDU会话,则所述第三PDU会话 为所述第二PDU会话。
可选地,所述装置700还包括第二处理模块702;若所述装置700在所述第二通信系统中开启了第二应用,所述第二通信系统中用于所述第二应用传输数据的PDN连接不支持在所述第一通信系统与第二通信系统之间的互操作,在所述装置700从所述第二通信系统转移回所述第一通信系统之后:所述第一处理模块701,还用于根据所述第二应用的标识,获取用于建立所述第二应用对应的PDU会话的参数信息;若所述装置700在所述第一通信系统中不存在第四PDU会话,所述第四PDU会话的上下文中的参数信息包括所述用于建立所述第二应用对应的PDU会话的参数信息中的至少部分信息,所述第二处理模块702,还用于根据所述用于建立所述第二应用对应的PDU会话的参数信息,在所述第一通信系统中建立第五PDU会话;所述第一处理模块701,还用于使用所述第五PDU会话为所述第二应用传输数据;
若所述装置700在所述第一通信系统中存在所述第四PDU会话,则所述第一处理模块701,还用于在所述第一通信系统中使用所述第四PDU会话为所述第二应用传输数据。
可选地,所述第一传输信息还包括所述第一PDU会话所使用的数据网络名称DNN;在所述装置700从所述第一通信系统转移至所述第二通信系统之后:在所述装置700在所述第二通信系统中存在目标PDN连接的情况下,所述第一处理模块701,还用于在所述第二通信系统中使用所述目标PDN连接为所述第一PDU会话传输数据,其中,所述目标PDN连接为使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
可选地,所述第一传输信息包括所述第一PDU会话的上下文;在所述装置700从所述第一通信系统转移至所述第二通信系统之后:所述第二处理模块702,用于根据所述第一PDU会话的上下文,在所述第二通信系统中建立第一PDN连接;所述第一处理模块701,还用于在所述第二通信系统中使用所述第一PDN连接为所述第一PDU会话传输数据。
可选地,所述第一PDU会话的上下文中包括所述第一PDU会话所使用的数据网络名称DNN;在所述第二处理模块702用于根据所述第一PDU会话的上下文,在所述第二通信系统中建立所述第一PDN连接之前,所述第一处理模块701,还用于确定所述装置700在所述第二通信系统中不存在使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
可选地,所述第一处理模块701,还用于在所述第一PDU会话不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,保存所述第一传输信息。
可选地,所述第一传输信息包括所述第一PDU会话的上下文。
可选地,所述第一通信系统为第五代通信系统,所述第二通信系统为第四代通信系统。
需要说明的是,本实施方式中的装置700可以是终端,也可以是应用于终端中的芯片或者其他具有上述终端功能的组合器件、部件等。当装置700是终端或具有上述终端功能的部件时,第一处理模块可以是应用处理器,第二处理模块可以是调制解调器。当装置700是芯片系统时,第一处理模块可以是芯片系统中的应用处理器,第二处理模块可以是芯片 系统中的调制解调器。
本实施方式中的用于在不同通信系统间转移场景下的装置,可以用于执行上述各方法实施例中的技术方案,其实现原理和技术效果类似,此处不再赘述。
在第二种可能的实施方式中,本实施例的用于在不同通信系统间转移场景下的装置700包括:第一处理模块701和第二处理模块702。
所述第一处理模块701,用于在4G通信系统中使用第一公用数据网PDN连接为第一应用传输数据,所述第一PDN连接不支持在4G通信系统与5G通信系统之间的互操作;在所述装置从4G通信系统转移至5G通信系统后,所述第一处理模块701和/或第二处理模块702,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话;所述第一处理模块701,还用于在所述5G通信系统中使用所述第一PDU会话为所述第一应用传输数据,所述第一传输信息包括所述第一应用的标识。
可选地,所述第一处理模块701和第二处理模块702,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:所述第一处理模块701,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;所述第二处理模块702,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述5G通信系统中建立所述第一PDU会话。
可选地,所述第一处理模块701和第二处理模块702,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:所述第一处理模块701,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及若所述装置在5G通信系统中不存在第二PDU会话,所述第二PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,所述第二处理模块702,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,若5G通信系统中建立所述第一PDU会话;在所述装置在5G通信系统中存在所述第二PDU会话,则所述第二PDU会话为所述第一PDU会话。
可选地,在所述第一PDN连接不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,所述第一处理模块701,还用于保存所述第一传输信息。
需要说明的是,本实施方式中的装置可以是终端,也可以是应用于终端中的芯片或者其他具有上述终端功能的组合器件、部件等。当装置是终端或具有上述终端功能的部件时,第一处理模块可以是应用处理器,第二处理模块可以是调制解调器。当装置是芯片系统时,第一处理模块可以是芯片系统中的应用处理器,第二处理模块可以是芯片系统中的调制解调器。
本实施方式中的用于在不同通信系统间转移场景下的装置,可以用于执行上述各方法实施例中的技术方案,其实现原理和技术效果类似,此处不再赘述。
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。在本申请的实施例中的各功能模块可以集成在一个处理模块中,也可以是各个模块单独物理存在,也可以两个或两个以上模块集成在一个模块中。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。
所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质 上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
图8为本申请另一实施例提供的一种用于在不同通信系统间转移场景下的装置的结构示意图,参见图8,用于在不同通信系统间转移场景下的装置800可以是是终端设备,也可以是支持终端设备实现上述方法的芯片、芯片系统、或处理器等,还可以是支持实现上述方法的芯片、芯片系统、或处理器等。该装置800可用于实现上述方法实施例中描述的方法,具体可以参见上述方法实施例中的说明。
所述装置800可以包括一个或多个处理器,所述处理器801也可以称为处理单元,可以实现一定的控制功能。所述处理器801可以是通用处理器或者专用处理器等。例如可以是调制解调器或应用处理器。调制解调器可以用于对通信协议以及通信数据进行处理,应用处理器可以用于对装置800(如,基站、基带芯片,终端、终端芯片,DU或CU等)进行控制,执行软件程序,处理软件程序的数据。
在一种可选的设计中,处理器801也可以存有指令和/或数据803,所述指令和/或数据803可以被所述处理器运行,使得所述装置800执行上述方法实施例中描述的方法。
在另一种可选的设计中,处理器801中可以包括用于实现接收和发送功能的收发单元。例如该收发单元可以是收发电路,或者是接口,或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的,也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写,或者,上述收发电路、接口或接口电路可以用于信号的传输或传递。
在又一种可能的设计中,装置800可以包括电路,所述电路可以实现前述方法实施例中发送或接收或者通信的功能。
可选的,所述装置800中可以包括一个或多个存储器802,其上可以存有指令804,所述指令可在所述处理器上被运行,使得所述装置800执行上述方法实施例中描述的方法。可选的,所述存储器中还可以存储有数据。可选的,处理器中也可以存储指令和/或数据。所述处理器和存储器可以单独设置,也可以集成在一起。例如,上述方法实施例中所描述的对应关系可以存储在存储器中,或者存储在处理器中。
可选的,所述装置800还可以包括收发器805和/或天线806。所述处理器801可以称为处理单元,对所述装置800进行控制。所述收发器805可以称为收发单元、收发机、收发电路或者收发器等,用于实现收发功能。
本申请中描述的处理器和收发器可实现在集成电路(integrated circuit,IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit,ASIC)、印刷电路板(printed circuit board,PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造,例如互补金属氧化物半导体(complementary metal oxide semiconductor,CMOS)、N型金属氧化物半导体 (nMetal-oxide-semiconductor,NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor,PMOS)、双极结型晶体管(Bipolar Junction Transistor,BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的用于在不同通信系统间转移场景下的装置可以是终端设备,但本申请中描述的用于在不同通信系统间转移场景下的装置的范围并不限于此,而且用于在不同通信系统间转移场景下的装置的结构可以不受图8的限制。用于在不同通信系统间转移场景下的装置可以是独立的设备或者可以是设备的一部分。例如用于在不同通信系统间转移场景下的装置可以是如下中的一种或多种的结合:
(1)独立的集成电路IC,或芯片,或,芯片系统或子系统;
(2)具有一个或多个IC的集合,可选的,该IC集合也可以包括用于存储数据和/或指令的存储部件;
(3)ASIC,例如调制解调器(MSM);
(4)可嵌入在其他设备内的模块;
(5)接收机、终端、智能终端、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等;
(6)其他等等。
图9为本申请实施例提供的终端的结构示意图。该终端可适用于本申请上述各实施例中所述的终端。为了便于说明,图9仅示出了终端的主要部件。如图9所示,终端900包括应用处理器901、调制解调器902、存储器903、控制电路904、天线905以及输入输出装置906(调制解调器和存储器之间通信连接,为了附图的清楚,图9中未示出调制解调器和存储器的连接)。调制解调器902主要用于对通信协议以及通信数据进行处理。应用处理器901主要用于对整个终端进行控制,执行软件程序,处理软件程序的数据。存储器903主要用于存储软件程序和数据。控制电路904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905主要用于收发电磁波形式的射频信号。输入输出装置906,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。
当终端开机后,应用处理器901可以读取存储单元中的软件程序,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,调制解调器902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,控制电路904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。当有数据发送到终端时,控制电路904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调制解调器902,调制解调器902将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解,为了便于说明,图9仅示出了一个存储器。在实际的终端中,可以存在多个存储器903。存储器也可以称为存储介质或者存储设备等,本申请实施例对此不做限制。
本领域技术人员可以理解,终端可以包括多个调制解调器902以适应不同的网络制式,终端可以包括多个应用处理器901以增强其处理能力,终端的各个部件可以通过各种总线连接。所述调制解调器902也可以表述为基带处理电路或者基带处理芯片。 所述应用处理器901也可以表述为中央处理电路或者中央处理芯片或中央处理器。对通信协议以及通信数据进行处理的功能可以内置在调制解调器902中,也可以以软件程序的形式存储在存储单元中,由调制解调器902执行软件程序以实现基带处理功能。
作为一种可选的实现方式,调制解调器902和应用处理器901也可以集成在一起。
在第一种可能的实施方式中,本实施例的终端可以包括应用处理器901和调制解调器902,其中:
应用处理器901,用于在第一通信系统中使用第一协议数据单元PDU会话为第一应用传输数据,所述第一PDU会话不支持在所述第一通信系统与第二通信系统之间的互操作;调制解调器902,用于所述终端从所述第一通信系统转移至所述第二通信系统;在所述终端从所述第二通信系统转移回所述第一通信系统后,调制解调器902和/或所述应用处理器901,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,所述第一传输信息包括所述第一应用的标识;所述应用处理器901,还用于在所述第一通信系统中使用所述第二PDU会话为所述第一应用传输数据。
可选地,所述第一传输信息还包括:所述第一PDU会话的上下文;所述调制解调器902,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述调制解调器902,具体用于根据所述第一PDU会话的上下文,建立所述第二PDU会话。
可选地,所述调制解调器902和所述应用处理器901至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述应用处理器901,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;所述调制解调器902,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,建立所述第二PDU会话。
可选地,所述调制解调器902和所述应用处理器901,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:所述应用处理器901,具体用于:根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及若所述终端在所述第一通信系统中不存在第三PDU会话,所述第三PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,所述调制解调器902,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述第一通信系统中建立第二PDU会话;若所述终端在所述第一通信系统中存在所述第三PDU会话,则所述第三PDU会话为所述第二PDU会话。
可选地,所述终端还包括调制解调器902;若所述终端在所述第二通信系统中开启了第二应用,所述第二通信系统中用于所述第二应用传输数据的PDN连接不支持在所述第一通信系统与第二通信系统之间的互操作,在所述终端从所述第二通信系统转移回所述第一通信系统之后:所述应用处理器901,还用于根据所述第二应用的标识,获取用于建立所述第二应用对应的PDU会话的参数信息;若所述终端在所述第一通信系统中不存在第四PDU会话,所述第四PDU会话的上下文中的参数信息包括所述用于建立所述第二应用对应的PDU会话的参数信息中的至少部分信息,所述调制解调器902,用于根据所述用于建立所述第二应用对应的PDU会话的参数信息,在所述第一 通信系统中建立第五PDU会话;所述应用处理器901,还用于使用所述第五PDU会话为所述第二应用传输数据;若所述终端在所述第一通信系统中存在所述第四PDU会话,则所述应用处理器901,还用于在所述第一通信系统中使用所述第四PDU会话为所述第二应用传输数据。
可选地,所述第一传输信息还包括所述第一PDU会话所使用的数据网络名称DNN;在所述终端从所述第一通信系统转移至所述第二通信系统之后:在所述终端在所述第二通信系统中存在目标PDN连接的情况下,所述应用处理器901,还用于在所述第二通信系统中使用所述目标PDN连接为所述第一PDU会话传输数据,其中,所述目标PDN连接为使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
可选地,所述第一传输信息包括所述第一PDU会话的上下文;在所述终端从所述第一通信系统转移至所述第二通信系统之后:所述调制解调器902,用于根据所述第一PDU会话的上下文,在所述第二通信系统中建立第一PDN连接;所述应用处理器901,还用于在所述第二通信系统中使用所述第一PDN连接为所述第一PDU会话传输数据。
可选地,所述第一PDU会话的上下文中包括所述第一PDU会话所使用的数据网络名称DNN;在所述调制解调器902用于根据所述第一PDU会话的上下文,在所述第二通信系统中建立所述第一PDN连接之前,所述应用处理器901,还用于确定所述终端在所述第二通信系统中不存在使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
可选地,所述应用处理器901,还用于在所述第一PDU会话不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,保存所述第一传输信息。
可选地,所述第一传输信息包括所述第一PDU会话的上下文。
可选地,所述第一通信系统为第五代通信系统,所述第二通信系统为第四代通信系统。
在第二种可能的实施方式中,本实施例的终端包括应用处理器901和调制解调器902,其中:
所述应用处理器901,用于在4G通信系统中使用第一公用数据网PDN连接为第一应用传输数据,所述第一PDN连接不支持在4G通信系统与5G通信系统之间的互操作;在所述终端从4G通信系统转移至5G通信系统后,所述应用处理器901和/或调制解调器902,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话;所述应用处理器901,还用于在所述5G通信系统中使用所述第一PDU会话为所述第一应用传输数据,所述第一传输信息包括所述第一应用的标识。
可选地,所述应用处理器901和调制解调器902,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:所述应用处理器901,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;所述调制解调器902,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述5G通信系统中建立所述第一PDU会话。
可选地,所述应用处理器901和调制解调器902,用于至少根据所述第一应用的 第一传输信息,获取第一PDU会话,包括:所述应用处理器901,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及若所述终端在5G通信系统中不存在第二PDU会话,所述第二PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,所述调制解调器902,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在5G通信系统中建立所述第一PDU会话;
若所述终端在5G通信系统中存在所述第二PDU会话,则所述第二PDU会话为所述第一PDU会话。
可选地,在所述第一PDN连接不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,所述应用处理器901,还用于保存所述第一传输信息。
本申请实施例还提供一种可读存储介质,所述可读存储介质上存储有计算机程序;所述计算机程序被执行时,实现上述方法实施例中的用于在不同通信系统间转移场景下的通信方法。
应理解,本申请各实施例中的应用处理器901或调制解调器902可以是一种集成电路芯片,具有信号的处理能力。所述应用处理器901和所述调制解调器902也可以集成在一起,如集成在一个系统芯片(System on a Chip,SoC)上。
各实施例中所述的用于在不同通信系统间转移场景下的装置,可以是终端;或者是终端的一部分,如是终端上的一个系统芯片。在实现过程中,上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、现场可编程门阵列(field programmable gate array,FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。
可以理解,本申请实施例中的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM,EPROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM,DR RAM)。应注意,本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请还提供了一种计算机可读介质,其上存储有计算机程序,该计算机程序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。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机指令时,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,高密度数字视频光盘(digital video disc,DVD))、或者半导体介质(例如,固态硬盘(solid state disk,SSD))等。
应理解,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一定指相同的实施例。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。应理解,在本申请的各种实施例中,上述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。
还应理解,在本申请中,“当…时”、“若”以及“如果”均指在某种客观情况下UE或者基站会做出相应的处理,并非是限定时间,且也不要求UE或基站实现时一定要有判断的动作,也不意味着存在其它限定。
本申请中对于使用单数表示的元素旨在用于表示“一个或多个”,而并非表示“一个且仅一个”,除非有特别说明。本申请中,在没有特别说明的情况下,“至少一个”旨在用于表示“一个或者多个”,“多个”旨在用于表示“两个或两个以上”。
另外,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“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可以是单数或者复数,B可以是单数或者复数。
字符“/”一般表示前后关联对象是一种“或”的关系。
本文中术语“……中的至少一个”或“……中的至少一种”,表示所列出的各项的全部或任意组合,例如,“A、B和C中的至少一种”,可以表示:单独存在A,单独存在B,单独存在C,同时存在A和B,同时存在B和C,同时存在A、B和C这六种情况,其中A可以是单数或者复数,B可以是单数或者复数,C可以是单数或者复数。
应理解,在本申请各实施例中,“与A相应的B”表示B与A相关联,根据A可以确定B。但还应理解,根据A确定B并不意味着仅仅根据A确定B,还可以根据A和/或其它信息确定B。
本申请中的预定义可以理解为定义、预先定义、存储、预存储、预协商、预配置、 固化、或预烧制。
本领域普通技术人员可以意识到,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,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,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。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(read-only memory,ROM)、随机存取存储器(random access memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。

Claims (47)

  1. 一种用于在不同通信系统间转移场景下的通信方法,其特征在于,包括:
    终端在第一通信系统中使用第一协议数据单元PDU会话为第一应用传输数据,所述第一PDU会话不支持在所述第一通信系统与第二通信系统之间的互操作;
    所述终端从所述第一通信系统转移至所述第二通信系统;
    所述终端从所述第二通信系统转移回所述第一通信系统后,所述终端至少根据所述第一应用的第一传输信息,获取第二PDU会话,并在所述第一通信系统中使用所述第二PDU会话为所述第一应用传输数据,所述第一传输信息包括所述第一应用的标识。
  2. 根据权利要求1所述的方法,其特征在于,所述第一传输信息还包括:所述第一PDU会话的上下文;所述终端至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:
    所述终端根据所述第一PDU会话的上下文,在所述第一通信系统中建立所述第二PDU会话。
  3. 根据权利要求1所述的方法,其特征在于,所述终端至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:
    所述终端根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;
    所述终端根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述第一通信系统中建立所述第二PDU会话。
  4. 根据权利要求1所述的方法,其特征在于,所述终端至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:
    所述终端根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及,
    若所述终端在所述第一通信系统中不存在第三PDU会话,所述第三PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,则所述终端根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述第一通信系统中建立所述第二PDU会话;
    若所述终端在所述第一通信系统中存在所述第三PDU会话,则所述第三PDU会话为所述第二PDU会话。
  5. 根据权利要求1~4任一项所述的方法,其特征在于,若所述终端在所述第二通信系统中开启了第二应用,所述第二通信系统中用于所述第二应用传输数据的PDN连接不支持在所述第一通信系统与第二通信系统之间的互操作,在所述终端从所述第二通信系统转移回所述第一通信系统之后,还包括:
    所述终端根据所述第二应用的标识,获取用于建立所述第二应用对应的PDU会话的参数信息;
    若所述终端在所述第一通信系统中不存在第四PDU会话,所述第四PDU会话的上下文中的参数信息包括所述用于建立所述第二应用对应的PDU会话的参数信息中的至少部分信息,则所述终端根据所述用于建立所述第二应用对应的PDU会话的参数 信息,在所述第一通信系统中建立第五PDU会话,并使用所述第五PDU会话为所述第二应用传输数据;
    若所述终端在所述第一通信系统中存在所述第四PDU会话,则所述终端在所述第一通信系统中使用所述第四PDU会话为所述第二应用传输数据。
  6. 根据权利要求1~5任一项所述的方法,其特征在于,所述第一传输信息还包括所述第一PDU会话所使用的数据网络名称DNN;在所述终端从所述第一通信系统转移至所述第二通信系统之后,所述方法还包括:
    在所述第二通信系统中存在目标公用数据网PDN连接的情况下,所述终端在所述第二通信系统中使用所述目标PDN连接为所述第一PDU会话传输数据,其中,所述目标PDN连接为使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
  7. 根据权利要求1~5任一项所述的方法,其特征在于,所述第一传输信息包括所述第一PDU会话的上下文;在所述终端从所述第一通信系统转移至所述第二通信系统之后,所述方法还包括:
    所述终端根据所述第一PDU会话的上下文,在所述第二通信系统中建立第一PDN连接;
    所述终端在所述第二通信系统中使用所述第一PDN连接为所述第一PDU会话传输数据。
  8. 根据权利要求7所述的方法,其特征在于,所述第一PDU会话的上下文中包括所述第一PDU会话所使用的数据网络名称DNN;
    在所述终端根据所述第一PDU会话的上下文,在所述第二通信系统中建立所述第一PDN连接之前,还包括:
    所述终端确定所述第二通信系统中不存在使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
  9. 根据权利要求1~8任一项所述的方法,其特征在于,还包括:
    在所述第一PDU会话不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,所述终端保存所述第一传输信息。
  10. 根据权利要求9所述的方法,其特征在于,所述第一传输信息包括所述第一PDU会话的上下文。
  11. 根据权利要求1~10任一项所述的方法,其特征在于,所述第一通信系统为第五代通信系统,所述第二通信系统为第四代通信系统。
  12. 一种用于在不同通信系统间转移场景下的通信方法,其特征在于,包括:
    终端在4G通信系统中使用第一公用数据网PDN连接为第一应用传输数据,所述第一PDN连接不支持在4G通信系统与5G通信系统之间的互操作;
    在所述终端从4G通信系统转移至5G通信系统后,所述终端至少根据所述第一应用的第一传输信息,获取第一协议数据单元PDU会话,并在所述5G通信系统中使用所述第一PDU会话为所述第一应用传输数据,所述第一传输信息包括所述第一应用的标识。
  13. 根据权利要求12所述的方法,其特征在于,所述终端至少根据所述第一应用 的第一传输信息,获取第一PDU会话,包括:
    所述终端根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;
    所述终端根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述5G通信系统中建立所述第一PDU会话。
  14. 根据权利要求12所述的方法,其特征在于,所述终端至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:
    所述终端根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及,
    若所述终端在5G通信系统中不存在第二PDU会话,所述第二PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,则所述终端根据所述用于建立所述第一应用对应的PDU会话的参数信息,在5G通信系统中建立所述第一PDU会话;
    若所述终端在5G通信系统中存在所述第二PDU会话,则所述第二PDU会话为所述第一PDU会话。
  15. 根据权利要求12~14任一项所述的方法,其特征在于,还包括:
    在所述第一PDN连接不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,所述终端保存所述第一传输信息。
  16. 一种用于在不同通信系统间转移场景下的装置,其特征在于,包括:
    第一处理模块,用于在第一通信系统中使用第一协议数据单元PDU会话为第一应用传输数据,所述第一PDU会话不支持在所述第一通信系统与第二通信系统之间的互操作;
    第二处理模块,用于所述装置从所述第一通信系统转移至所述第二通信系统;
    在所述装置从所述第二通信系统转移回所述第一通信系统后,第二处理模块和/或所述第一处理模块,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,所述第一传输信息包括所述第一应用的标识;
    所述第一处理模块,还用于在所述第一通信系统中使用所述第二PDU会话为所述第一应用传输数据。
  17. 根据权利要求16所述的装置,其特征在于,所述第一传输信息还包括:所述第一PDU会话的上下文;
    所述第二处理模块用于至少根据所述第一应用的第一传输信息获取第二PDU会话,包括:所述第二处理模块,具体用于根据所述第一PDU会话的上下文,建立所述第二PDU会话。
  18. 根据权利要求16所述的装置,其特征在于,所述第二处理模块和所述第一处理模块用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:
    所述第一处理模块,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;
    所述第二处理模块,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,建立所述第二PDU会话。
  19. 根据权利要求16所述的装置,其特征在于,所述第二处理模块和所述第一处理模块,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:
    所述第一处理模块,具体用于:根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及若所述装置在所述第一通信系统中不存在第三PDU会话,所述第三PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,所述第二处理模块,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述第一通信系统中建立第二PDU会话;
    若所述装置在所述第一通信系统中存在所述第三PDU会话,则所述第三PDU会话为所述第二PDU会话。
  20. 根据权利要求16~19任一项所述的装置,其特征在于,若所述装置在所述第二通信系统中开启了第二应用,所述第二通信系统中用于所述第二应用传输数据的PDN连接不支持在所述第一通信系统与第二通信系统之间的互操作,在所述装置从所述第二通信系统转移回所述第一通信系统之后:
    所述第一处理模块,还用于根据所述第二应用的标识,获取用于建立所述第二应用对应的PDU会话的参数信息;
    若所述装置在所述第一通信系统中不存在第四PDU会话,所述第四PDU会话的上下文中的参数信息包括所述用于建立所述第二应用对应的PDU会话的参数信息中的至少部分信息,所述第二处理模块,还用于根据所述用于建立所述第二应用对应的PDU会话的参数信息,在所述第一通信系统中建立第五PDU会话;所述第一处理模块,还用于使用所述第五PDU会话为所述第二应用传输数据;
    若所述装置在所述第一通信系统中存在所述第四PDU会话,则所述第一处理模块,还用于在所述第一通信系统中使用所述第四PDU会话为所述第二应用传输数据。
  21. 根据权利要求16~20任一项所述的装置,其特征在于,所述第一传输信息还包括所述第一PDU会话所使用的数据网络名称DNN;在所述装置从所述第一通信系统转移至所述第二通信系统之后:
    在所述装置在所述第二通信系统中存在目标公用数据网PDN连接的情况下,所述第一处理模块,还用于在所述第二通信系统中使用所述目标PDN连接为所述第一PDU会话传输数据,其中,所述目标PDN连接为使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
  22. 根据权利要求16~20任一项所述的装置,其特征在于,所述第一传输信息包括所述第一PDU会话的上下文;在所述装置从所述第一通信系统转移至所述第二通信系统之后:
    所述第二处理模块,还用于根据所述第一PDU会话的上下文,在所述第二通信系统中建立第一PDN连接;
    所述第一处理模块,还用于在所述第二通信系统中使用所述第一PDN连接为所述第一PDU会话传输数据。
  23. 根据权利要求22所述的装置,其特征在于,所述第一PDU会话的上下文中包括所述第一PDU会话所使用的数据网络名称DNN;
    在所述第二处理模块用于根据所述第一PDU会话的上下文,在所述第二通信系统中建立所述第一PDN连接之前,所述第一处理模块,还用于确定所述装置在所述第二通信系统中不存在使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
  24. 根据权利要求16~23任一项所述的装置,其特征在于,所述第一处理模块,还用于在所述第一PDU会话不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,保存所述第一传输信息。
  25. 根据权利要求24所述的装置,其特征在于,所述第一传输信息包括所述第一PDU会话的上下文。
  26. 根据权利要求16~25任一项所述的装置,其特征在于,所述第一通信系统为第五代通信系统,所述第二通信系统为第四代通信系统。
  27. 一种用于在不同通信系统间转移场景下的装置,其特征在于,包括:第一处理模块;
    所述第一处理模块,用于在4G通信系统中使用第一公用数据网PDN连接为第一应用传输数据,所述第一PDN连接不支持在4G通信系统与5G通信系统之间的互操作;
    在所述装置从4G通信系统转移至5G通信系统后,所述第一处理模块和/或第二处理模块,用于至少根据所述第一应用的第一传输信息,获取第一协议数据单元PDU会话;
    所述第一处理模块,还用于在所述5G通信系统中使用所述第一PDU会话为所述第一应用传输数据,所述第一传输信息包括所述第一应用的标识。
  28. 根据权利要求27所述的装置,其特征在于,所述第一处理模块和第二处理模块,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:
    所述第一处理模块,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;
    所述第二处理模块,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述5G通信系统中建立所述第一PDU会话。
  29. 根据权利要求27所述的装置,其特征在于,所述第一处理模块和第二处理模块,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:
    所述第一处理模块,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及
    若所述装置在5G通信系统中不存在第二PDU会话,所述第二PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,则所述第二处理模块具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在5G通信系统中建立所述第一PDU会话;
    若所述装置在5G通信系统中存在所述第二PDU会话,则所述第二PDU会话为所述第一PDU会话。
  30. 根据权利要求27~29任一项所述的装置,其特征在于,在所述第一PDN连接不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,所述第一处 理模块还用于保存所述第一传输信息。
  31. 一种用于在不同通信系统间转移场景下的装置,其特征在于,包括:
    应用处理器,用于在第一通信系统中使用第一协议数据单元PDU会话为第一应用传输数据,所述第一PDU会话不支持在所述第一通信系统与第二通信系统之间的互操作;
    调制解调器,用于所述装置从所述第一通信系统转移至所述第二通信系统;
    在所述装置从所述第二通信系统转移回所述第一通信系统后,所述调制解调器和/或所述应用处理器,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,所述第一传输信息包括所述第一应用的标识;
    所述应用处理器,还用于在所述第一通信系统中使用所述第二PDU会话为所述第一应用传输数据。
  32. 根据权利要求31所述的装置,其特征在于,所述第一传输信息还包括:所述第一PDU会话的上下文;
    所述调制解调器用于至少根据所述第一应用的第一传输信息获取第二PDU会话,包括:所述调制解调器,具体用于根据所述第一PDU会话的上下文,建立所述第二PDU会话。
  33. 根据权利要求31所述的装置,其特征在于,所述调制解调器和所述应用处理器用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:
    所述应用处理器,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;
    所述调制解调器,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,建立所述第二PDU会话。
  34. 根据权利要求31所述的装置,其特征在于,所述调制解调器和所述应用处理器,用于至少根据所述第一应用的第一传输信息,获取第二PDU会话,包括:
    所述应用处理器,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及若所述装置在所述第一通信系统中不存在第三PDU会话,所述第三PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,所述调制解调器,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述第一通信系统中建立第二PDU会话;
    若所述装置在所述第一通信系统中存在所述第三PDU会话,则所述第三PDU会话为所述第二PDU会话。
  35. 根据权利要求31~34任一项所述的装置,其特征在于,若所述装置在所述第二通信系统中开启了第二应用,所述第二通信系统中用于所述第二应用传输数据的PDN连接不支持在所述第一通信系统与第二通信系统之间的互操作,在所述装置从所述第二通信系统转移回所述第一通信系统之后:
    所述应用处理器,还用于根据所述第二应用的标识,获取用于建立所述第二应用对应的PDU会话的参数信息;
    若所述装置在所述第一通信系统中不存在第四PDU会话,所述第四PDU会话的 上下文中的参数信息包括所述用于建立所述第二应用对应的PDU会话的参数信息中的至少部分信息,所述调制解调器,还用于根据所述用于建立所述第二应用对应的PDU会话的参数信息,在所述第一通信系统中建立第五PDU会话;所述应用处理器,还用于使用所述第五PDU会话为所述第二应用传输数据;
    若所述装置在所述第一通信系统中存在所述第四PDU会话,则所述应用处理器,还用于在所述第一通信系统中使用所述第四PDU会话为所述第二应用传输数据。
  36. 根据权利要求31~35任一项所述的装置,其特征在于,所述第一传输信息还包括所述第一PDU会话所使用的数据网络名称DNN;在所述装置从所述第一通信系统转移至所述第二通信系统之后:
    在所述装置在所述第二通信系统中存在目标公用数据网PDN连接的情况下,所述应用处理器,还用于在所述第二通信系统中使用所述目标PDN连接为所述第一PDU会话传输数据,其中,所述目标PDN连接为使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
  37. 根据权利要求31~35任一项所述的装置,其特征在于,所述第一传输信息包括所述第一PDU会话的上下文;在所述装置从所述第一通信系统转移至所述第二通信系统之后:
    所述调制解调器,用于根据所述第一PDU会话的上下文,在所述第二通信系统中建立第一PDN连接;
    所述应用处理器,还用于在所述第二通信系统中使用所述第一PDN连接为所述第一PDU会话传输数据。
  38. 根据权利要求37所述的装置,其特征在于,所述第一PDU会话的上下文中包括所述第一PDU会话所使用的数据网络名称DNN;
    在所述调制解调器用于根据所述第一PDU会话的上下文,在所述第二通信系统中建立所述第一PDN连接之前,所述应用处理器,还用于确定所述装置在所述第二通信系统中不存在使用目标接入点名称APN的PDN连接,所述目标APN为所述第一PDU会话所使用的DNN在所述第二通信系统中对应的APN。
  39. 根据权利要求31~38任一项所述的装置,其特征在于,所述应用处理器,还用于在所述第一PDU会话不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,保存所述第一传输信息。
  40. 根据权利要求39所述的装置,其特征在于,所述第一传输信息包括所述第一PDU会话的上下文。
  41. 根据权利要求31~40任一项所述的装置,其特征在于,所述第一通信系统为第五代通信系统,所述第二通信系统为第四代通信系统。
  42. 一种用于在不同通信系统间转移场景下的装置,其特征在于,包括:应用处理器;
    所述应用处理器,用于在4G通信系统中使用第一公用数据网PDN连接为第一应用传输数据,所述第一PDN连接不支持在4G通信系统与5G通信系统之间的互操作;
    在所述装置从4G通信系统转移至5G通信系统后,所述应用处理器和/或调制解调器,用于至少根据所述第一应用的第一传输信息,获取第一协议数据单元PDU会话;
    所述应用处理器,还用于在所述5G通信系统中使用所述第一PDU会话为所述第一应用传输数据,所述第一传输信息包括所述第一应用的标识。
  43. 根据权利要求42所述的装置,其特征在于,所述应用处理器和调制解调器,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:
    所述应用处理器,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;
    所述调制解调器,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在所述5G通信系统中建立所述第一PDU会话。
  44. 根据权利要求42所述的装置,其特征在于,所述应用处理器和调制解调器,用于至少根据所述第一应用的第一传输信息,获取第一PDU会话,包括:
    所述应用处理器,具体用于根据所述第一应用的标识,获取用于建立所述第一应用对应的PDU会话的参数信息;以及若所述装置在5G通信系统中不存在第二PDU会话,所述第二PDU会话的上下文中的参数信息包括所述用于建立所述第一应用对应的PDU会话的参数信息中的至少部分信息,所述调制解调器,具体用于根据所述用于建立所述第一应用对应的PDU会话的参数信息,在5G通信系统中建立所述第一PDU会话;
    若所述装置在5G通信系统中存在所述第二PDU会话,则所述第二PDU会话为所述第一PDU会话。
  45. 根据权利要求42~44任一项所述的装置,其特征在于,在所述第一PDN连接不支持在所述第一通信系统和所述第二通信系统之间的互操作的情况下,所述应用处理器,还用于保存所述第一传输信息。
  46. 一种用于在不同通信系统间转移场景下的装置,所述装置包括处理器和存储器,所述存储器存储有指令,所述指令被所述处理器运行时,使得所述装置执行如权利要求1-11任一项所述的方法或者如权利要求12-15任一项所述的方法。
  47. 一种可读存储介质,其特征在于,所述可读存储介质上存储有计算机程序;所述计算机程序被执行时,实现如权利要求1-11任一项所述的方法或者如权利要求12-15任一项所述的方法。
PCT/CN2019/111657 2018-10-17 2019-10-17 用于在不同通信系统间转移场景下的通信方法和装置 WO2020078418A1 (zh)

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