WO2020200122A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2020200122A1
WO2020200122A1 PCT/CN2020/081861 CN2020081861W WO2020200122A1 WO 2020200122 A1 WO2020200122 A1 WO 2020200122A1 CN 2020081861 W CN2020081861 W CN 2020081861W WO 2020200122 A1 WO2020200122 A1 WO 2020200122A1
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WO
WIPO (PCT)
Prior art keywords
network
terminal
access
information
communication
Prior art date
Application number
PCT/CN2020/081861
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English (en)
French (fr)
Inventor
王瑞
戴明增
曾清海
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.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20782961.5A priority Critical patent/EP3923630A4/en
Publication of WO2020200122A1 publication Critical patent/WO2020200122A1/zh
Priority to US17/479,690 priority patent/US20220007240A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and device.
  • 5GCN 5th generation core network
  • the terminal cannot perform the first service in the fifth generation mobile communication technology (5G) network (for example, the 5G network does not support the first service, or the terminal does not support the first service in the 5G network).
  • 5G fifth generation mobile communication technology
  • the terminal disables the N1 mode capability of the terminal, that is, disables the terminal's ability to access the 5GC.
  • the terminal accesses the EPC.
  • the access network device of the 4G network needs to know that the terminal has disabled the N1 mode capability.
  • the embodiments of the present application provide a communication method and device, which provide a way for an access network device to determine that the terminal has disabled the NI mode capability.
  • a communication method is provided. After disabling the ability to access the first network, a terminal receives a wireless capability acquisition message from an access network device of a second network, and the wireless capability acquisition message is used to request the terminal to be acquired. Correspondingly, the terminal sends a first notification message indicating that the terminal does not support access to the first network to the access network device of the second network, so that the access network device of the second network can It is learned that the terminal has been disabled to access the first network. It can be seen that the communication method provided in this application can enable the access network device to know that the terminal has been disabled to access the first network.
  • the communication method provided in the embodiment of the present application can enable the access network device of the 4G network to learn that the terminal has disabled the N1 mode capability.
  • the communication method provided in the embodiment of the present application can enable the access network device of the 5G network to know that the terminal has disabled the S1 mode capability.
  • the S1 mode capability of the terminal refers to the ability of the terminal to access the EPC.
  • the terminal after disabling the ability to access the first network, the terminal also sends to the core network device of the second network a message indicating that the wireless capability of the terminal has changed.
  • the first information is so that the core network device of the second network that has stored the wireless capability information of the terminal deletes the stored wireless capability information of the terminal.
  • the communication method provided by this application further includes: the terminal enables the ability to access the first network, and sends the second network to the access network device of the second network.
  • the second notification message is used to indicate that the terminal supports access to the first network.
  • the terminal may also re-enable the ability to access the first network according to actual requirements.
  • the terminal may also send a second notification message to the access network device of the second network.
  • the access network device of the second network can learn that the terminal is enabled to access the first network, and then can switch the terminal to the first network.
  • the first notification message does not include first wireless capability information
  • the first wireless capability information includes information used to indicate the air interface capability of the terminal to access the first network, Information used to indicate the ability of the terminal to switch from the second network to the first network, information used to indicate the ability of the terminal to redirect from the second network to the first network, or information used to indicate that the terminal accesses in a dual-connection manner At least one of the capability information of the first network.
  • the air interface capability of the terminal to access the first network includes the terminal's support for evolving universal terrestrial wireless access ( The evolved universal terrestrial radio access (E-UTRA) ability to access the 5G core network, and the ability of the terminal to support access to the 5G core network through the new radio (NR).
  • E-UTRA evolved universal terrestrial radio access
  • NR new radio
  • a communication device which can implement the functions in the first aspect and any one of its possible implementation manners. These functions can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device may include a processing unit, a receiving unit, and a sending unit.
  • the processing unit, the receiving unit, and the sending unit can execute the first aspect and any one of its possible implementations.
  • Corresponding functions in the communication method, such as a processing unit, are used to disable the ability to access the first network.
  • the receiving unit is configured to receive a wireless capability acquisition message from an access network device of the second network, where the wireless capability acquisition message is used to request to acquire the wireless capability of the terminal.
  • the sending unit is configured to send a first notification message to an access network device of the second network, where the first notification message is used to indicate that the terminal does not support access to the first network.
  • a communication device in a third aspect, includes a processor, the processor is configured to be coupled with a memory, read and execute instructions in the memory, so as to implement the first aspect and any one of its possibilities. Implement the communication method described in the mode.
  • the communication device may further include a memory, and the memory is used to store program instructions and data of the communication device.
  • the communication device may further include a communication interface, which is used to execute the communication method described in the first aspect and any one of its possible implementations under the control of the processor of the communication device The step of sending and receiving data, signaling, or information in, for example, receiving a wireless capability acquisition message and sending a first notification message.
  • a communication interface which is used to execute the communication method described in the first aspect and any one of its possible implementations under the control of the processor of the communication device The step of sending and receiving data, signaling, or information in, for example, receiving a wireless capability acquisition message and sending a first notification message.
  • the communication device may be a terminal, or a part of devices in the terminal, such as a chip system in the terminal.
  • the chip system is used to support the terminal to implement the functions involved in the first aspect and any one of its possible implementations, for example, to receive or process the data and/or information involved in the aforementioned communication method.
  • the chip system includes a chip, and may also include other discrete devices or circuit structures.
  • a computer-readable storage medium stores instructions; when it runs on a communication device, the communication device is caused to execute the above-mentioned first aspect and various possible implementations thereof The communication method described in the method.
  • a computer program product including instructions is also provided, which when running on a communication device, causes the communication device to execute the communication method as described in the first aspect and various possible implementations thereof.
  • a communication method After receiving non-access NAS capability information indicating that the terminal has disabled the ability to access the first network, the core network device of the second network connects to the second network.
  • the network-connected device sends instruction information, which is used to instruct to obtain the wireless capability of the terminal, or to indicate that the access network device of the second network cannot access the terminal to the first network.
  • the access network of the second network The device can learn that the terminal has been disabled to access the first network, and thus will not access the terminal to the first network.
  • the core network device of the second network further receives first information from the terminal before sending the instruction information to the access network device of the second network. It is used to indicate that the wireless capability of the terminal has changed; subsequently, the core network device of the second network deletes the first wireless capability information and the second wireless capability information according to the first information.
  • the first wireless capability information is used to indicate that the terminal supports access to the first network
  • the second wireless capability information is used to indicate that the terminal supports access to the second network.
  • the core network device of the second network may have stored the first wireless capability information and the second wireless capability information before providing services for the terminal that has disabled the ability to access the first network. After receiving the first information, the core network device of the second network learns that the wireless capability of the terminal has changed. At this time, the wireless capability information stored by the core network device of the second network does not correspond to the wireless capability of the terminal. The core network device of the network deletes the first wireless capability information and the second wireless capability information.
  • the first wireless capability information includes information used to indicate the air interface capability of the terminal to access the first network, and used to indicate that the terminal is handed over from the second network to the first network. At least one of network capability information, information indicating the ability of the terminal to redirect from the second network to the first network, or information indicating the ability of the terminal to access the first network in a dual connection manner ;
  • the second wireless capability information includes information indicating the air interface capability of the terminal to access the second network, information indicating the ability of the terminal to switch from the first network to the second network, and indicating that the terminal is redirected from the first network to the At least one of the capability information of the second network or the information indicating the capability of the terminal to access the second network in a dual connection manner.
  • the air interface capability of the terminal to access the first network includes the terminal's support for evolving universal terrestrial radio access E -UTRA's ability to access the 5G core network, and the ability of the terminal to support access to the 5G core network through the new air interface NR;
  • the second network is a fifth-generation communication technology 5G network
  • the air interface ability of the terminal to access the second network includes The terminal supports the ability to access the 5G core network through E-UTRA, and the terminal supports the ability to access the 5G core network through NR.
  • a communication device which can implement the functions in the sixth aspect and any one of its possible implementation manners. These functions can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device may include a receiving unit and a sending unit, and the receiving unit and the sending unit can execute the communication method described in the sixth aspect and any one of its possible implementations.
  • Corresponding functions such as a receiving unit, are used to receive non-access NAS capability information from the terminal, and the NAS capability information is used to indicate that the terminal has disabled the ability to access the first network.
  • the sending unit is configured to send instruction information to the access network device of the second network, where the instruction information is used to instruct to obtain the wireless capability of the terminal, or to indicate that the access network device of the second network cannot access the terminal to the second network.
  • a communication device includes a processor configured to couple with a memory, read and execute instructions in the memory, so as to implement the sixth aspect and any one of the possibilities thereof. Implement the communication method described in the mode.
  • the communication device may further include a memory, and the memory is used to store program instructions and data of the communication device.
  • the communication device may further include a communication interface, which is used to execute the sixth aspect and any one of its possible implementations described in the sixth aspect under the control of the processor of the communication device.
  • the step of sending and receiving data, signaling or information in the communication method for example, receiving NAS capability information and sending instruction information.
  • the communication device may be a core network device of the second network, or a part of devices in the core network device of the second network, such as a chip system in the core network device of the second network.
  • the chip system is used to support the core network equipment of the second network to implement the functions involved in the sixth aspect and any one of its possible implementations, for example, to send or process the data and/or information involved in the aforementioned communication method.
  • the chip system includes a chip, and may also include other discrete devices or circuit structures.
  • a computer-readable storage medium stores instructions; when it runs on a communication device, the communication device executes the sixth aspect and various possible implementations as described above The communication method described in the method.
  • a computer program product including instructions is also provided, which when running on a communication device, causes the communication device to execute the communication method as described in the sixth aspect and various possible implementations thereof.
  • a communication method is provided.
  • An access network device of a second network sends a wireless capability acquisition message for requesting to acquire a wireless capability of the terminal to a terminal. Subsequently, the access network device of the second network receives The first notification message is used to indicate that the terminal does not support access to the first network. In this way, the access network device of the second network can determine according to the first notification message that the terminal does not support access to the first network.
  • the access network device of the second network also sends handover indication information to the target device, and the handover indication information is used to indicate that the terminal does not support the first network. Access.
  • the target device can determine that the terminal cannot be connected to the first network according to the switching instruction information, which maintains the consistency of the terminal’s performance. Reduce unnecessary signaling interaction, thereby reducing the waste of resources.
  • the access network device of the second network before sending the wireless capability acquisition message to the terminal, the access network device of the second network also establishes a communication connection with the terminal, and will receive the message from the second network.
  • Instruction information of the core network equipment of the network may be used to indicate to acquire the wireless capability of the terminal, and may also be used to indicate that the access network device of the second network cannot access the terminal to the first network.
  • the access network device of the second network establishes a communication connection with the terminal
  • the access network device of the second network fails to obtain the wireless capability of the terminal from the core network device of the second network
  • the access network device communicates with the terminal to obtain the wireless capability of the terminal.
  • the access network device of the second network can learn whether the terminal is disabled to access the first network. If the access network device of the second network obtains the indication information sent by the core network device of the second network to indicate that the terminal cannot be connected to the first network, the access network device of the second network can follow the indication information Determine the wireless capabilities of the terminal.
  • the access network device of the second network also receives a second notification message from the terminal, and the second notification message is used to indicate that the terminal supports the access of the first network. Into.
  • the terminal may also re-enable the ability to access the first network. If the terminal re-enables the ability to access the first network, the terminal can send a second notification message for instructing the terminal to support access to the first network to the access network device of the second network.
  • the access network equipment can determine the wireless capability of the terminal in time.
  • the first notification message does not include first wireless capability information
  • the first wireless capability information includes information used to indicate the air interface capability of the terminal to access the first network, Information used to indicate the ability of the terminal to switch from the second network to the first network, information used to indicate the ability of the terminal to redirect from the second network to the first network, or information used to indicate that the terminal accesses in a dual-connection manner At least one of the capability information of the first network.
  • the air interface capability of the terminal to access the first network includes the terminal's support for accessing the 5G core through E-UTRA Network capabilities, and the terminal's ability to support access to the 5G core network through NR.
  • a communication device which can implement the functions in the eleventh aspect and any one of its possible implementation manners. These functions can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device may include a sending unit and a receiving unit, and the sending unit and the receiving unit can execute the communication method described in the eleventh aspect and any one of its possible implementations.
  • the sending unit is used to send a wireless capability acquisition message to the terminal, and the wireless capability acquisition message is used to request to acquire the wireless capability of the terminal.
  • the receiving unit is configured to receive a first notification message from the terminal, where the first notification message is used to indicate that the terminal does not support access to the first network.
  • a communication device in a thirteenth aspect, includes a processor configured to couple with a memory, read and execute instructions in the memory, so as to implement the eleventh aspect and any one thereof Possible implementation methods described in the communication method.
  • the communication device may further include a memory, and the memory is used to store program instructions and data of the communication device.
  • the communication device may also include a communication interface, which is used to execute the eleventh aspect and any one of its possible implementations described in the above-mentioned aspect under the control of the processor of the communication device.
  • the step of sending and receiving data, signaling or information in the communication method for example, sending measurement configuration information.
  • the communication device may be an access network device of the second network, or a part of devices in the access network device of the second network, such as a chip system in the access network device of the second network.
  • the chip system is used to support the access network equipment of the second network to implement the functions involved in the eleventh aspect and any one of its possible implementations, for example, sending or processing the data and/or involved in the aforementioned communication methods information.
  • the chip system includes a chip, and may also include other discrete devices or circuit structures.
  • a computer-readable storage medium stores instructions; when it runs on a communication device, the communication device executes the eleventh aspect and its various possibilities. The communication method described in the implementation mode.
  • a computer program product including instructions is also provided, which when running on a communication device, causes the communication device to execute the communication method described in the eleventh aspect and various possible implementations thereof.
  • a communication system which includes the communication device according to any one of the second aspect to the fifth aspect, and the communication device according to any one of the seventh aspect to the tenth aspect above A communication device, and the communication device according to any one of the twelfth aspect to the fifteenth aspect.
  • the name of the aforementioned communication device does not constitute a limitation on the device or functional module itself. In actual implementation, these devices or functional modules may appear under other names. As long as the function of each device or functional module is similar to that of this application, it falls within the scope of the claims of this application and equivalent technologies.
  • Figure 1 is a schematic diagram of the structure of a common communication system
  • Figure 2 is a schematic diagram of the structure of the NEDC communication system
  • Figure 3 is a schematic diagram of the structure of the NG-ENDC communication system
  • FIG. 4 is a schematic diagram of the structure of the protocol stack of 5G UE in an embodiment of the application
  • FIG. 5 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application.
  • FIG. 6 is a first schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 7 is a second schematic diagram of the flow of a communication method provided by an embodiment of this application.
  • FIG. 8 is a third schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 9 is a first structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 10 is a second structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 11 is a third structural diagram of a communication device provided by an embodiment of this application.
  • words such as “exemplary” or “for example” are used as examples, illustrations, or illustrations. Any embodiment or design solution described as “exemplary” or “for example” in the embodiments of the present application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to present related concepts in a specific manner.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present application, unless otherwise specified, “plurality” means two or more.
  • an evolved base station evolved node base station, eNB
  • eNB evolved node base station
  • ng-eNB next generation eNB
  • the ng-eNB provides wireless transmission resources for the terminal through the E-UTRA technology.
  • the ng-eNB can provide 5GC services for the terminal, and can also provide EPC services for the terminal.
  • the ng-eNB can only connect with 5GC/EPC, or connect with 5GC and EPC at the same time.
  • the radio access network (RAN) of the 5G network is called next generation RAN (NG-RAN), and the NG-RAN nodes include ng-eNB and gNB (base station in 5G system).
  • NG-RAN next generation RAN
  • gNB provides wireless transmission resources for 5G UEs through NR technology, and provides 5GC services for 5G UEs.
  • the UE in the 4G system is referred to as 4G UE
  • the eNB in the 4G system is referred to as 4G eNB
  • the UE in the 5G system is referred to as 5G UE.
  • Figure 1 shows the structure of a common communication system.
  • the ng-eNB can access the EPC through the S1 interface, and can also access the 5GC through other corresponding interfaces (denoted by NG in Figure 1).
  • the 5G UE connected to the ng-eNB can access the 5GC through the ng-eNB
  • the 4G UE connected to the ng-eNB can access the EPC through the ng-eNB.
  • the 4G eNB is connected to the ng-eNB connected to the EPC through the X2 interface, and the ng-eNB and the gNB are connected through the Xn interface.
  • connection between the above multiple devices may be a wireless connection.
  • a solid line is used in FIG. 1 to indicate.
  • 5G UE can access 5GC through gNB, 5GC through ng-eNB, and EPC through ng-eNB.
  • the ng-eNB and/or gNB can also configure dual connectivity (DC) operation for the 5G UE, and connect the 5G UE to the 5GC.
  • DC dual connectivity
  • FIG. 2 and FIG. 3 show a communication system in which the ng-eNB and the gNB are dual-connected.
  • the communication system shown in FIG. 2 may be called a NEDC (NR E-UTRA DC) communication system.
  • NEDC NR E-UTRA DC
  • NEDC is also called Option 4/4A.
  • gNB is the master node (MN)
  • ng-eNB is the secondary node (SN)
  • MN is connected to 5GC
  • MN and SN are "data between 5G UE and 5GC" Provide air interface transmission resources.
  • FIG. 2 (a) in Figure 2 is a schematic structural diagram of the Option 4 communication system, and (b) in Figure 2 is a schematic structural diagram of the Option 4A communication system.
  • gNB is connected to 5GC through NG interface (including NG-C interface and NG-U interface), and ng-eNB is connected to gNB through Xn interface.
  • the ng-eNB is also connected to the 5GC through the NG-U interface.
  • the dashed line in Figure 2 indicates the connection of the control plane.
  • the communication system shown in FIG. 3 may be called an NG-ENDC (Next Generation E-UTRA NR DC) communication system.
  • NG-ENDC Next Generation E-UTRA NR DC
  • NG-ENDC is also called Option 7/7A/7X.
  • ng-eNB is MN
  • gNB is SN
  • MN is connected with 5GC
  • MN and SN provide air interface transmission resources for "data between terminal and 5GC".
  • FIG. 3 (a) in FIG. 3 is a schematic structural diagram of the Option 7 communication system, and (b) in FIG. 3 is a schematic structural diagram of the Option 7A communication system.
  • ng-eNB is connected to 5GC through NG interface (including NG-C interface and NG-U interface), ng-eNB is connected to gNB through Xn interface.
  • the gNB is also connected to the 5GC through the NG-U interface.
  • the dashed line in Figure 3 indicates the connection of the control plane.
  • the protocol stack of the above 5G UE includes the physical layer (physical layer, PHY layer), media access control (MAC) layer, radio link control (RLC) layer, and packet data aggregation Protocol (packet data convergence protocol, PDCP) layer, radio resource control (radio resource control, RRC) layer, and non-access (non-access stratum, NAS) layer.
  • the PHY layer, MAC layer, RLC layer, PDCP layer, and RRC layer can belong to the access (access stratum, AS) layer.
  • the AS layer is used to implement the communication between the terminal and the access network device
  • the NAS layer is used to implement The communication between the terminal and the core network equipment.
  • the NAS layer of the 5G UE can be regarded as including an EPS NAS layer corresponding to an evolved packet system (EPS) and a 5GS NAS layer corresponding to a 5G system (5G system, 5GS).
  • the EPS NAS layer can generate NAS messages for accessing the EPC network
  • the 5GS NAS layer can generate NAS messages for accessing the 5GC.
  • EPS and 5GS can share the PHY layer, MAC layer, RLC layer, PDCP layer, and RRC layer.
  • (A) in Figure 4 shows the 5G UE protocol stack structure.
  • the NAS layer of the 5G UE can be regarded as including the EPS NAS layer corresponding to the evolved packet system (EPS) and the 5GS NAS layer corresponding to the 5G system (5G system, 5GS), and the RRC layer can be regarded as including and EPS RRC layer corresponding to EPS and 5GS RRC layer corresponding to 5GS.
  • the functions of the EPS NAS layer and the 5GS NAS layer can refer to the above description.
  • the EPS RRC layer can generate RRC messages for accessing the EPC network
  • the 5GS RRC layer can generate RRC messages for accessing the 5GC.
  • EPS and 5GS can share the PHY layer, MAC layer, RLC layer, and PDCP layer.
  • (B) in Figure 4 shows the 5G UE protocol stack structure.
  • the 5G UE cannot perform the first service in the 5G network (for example, the first service is IMS voice service), then the N1 mode capability of the terminal is disabled, that is, the terminal access is disabled 5GC capabilities.
  • the inability of the 5G UE to perform the first service in the 5G network may mean that the 5G network does not support the first service or the 5G UE does not support the execution of the first service in the 5G network.
  • 5G UE accesses EPC.
  • the access network device of the 4G network needs to know that the terminal has disabled the N1 mode capability.
  • the embodiments of the present application provide a communication method and device.
  • a terminal After disabling the ability to access the first network, a terminal receives a wireless capability acquisition message from an access network device of the second network, and the wireless capability acquisition message It is used to request to obtain the wireless capability of the terminal. Accordingly, the terminal sends a first notification message indicating that the terminal does not support access to the first network to the access network device of the second network.
  • the network access device can learn that the terminal has been disabled to access the first network. It can be seen that the communication method provided in the embodiment of the present application can enable the access network device to learn that the terminal has been disabled to access the first network.
  • the communication method provided in the embodiment of the present application can enable the access network device of the 4G network to learn that the terminal has disabled the N1 mode capability.
  • the communication method provided in the embodiment of the present application can enable the access network device of the 5G network to know that the terminal has disabled the S1 mode capability.
  • the S1 mode capability of the terminal refers to the ability of the terminal to access the EPC.
  • the terminals involved in the embodiments of this application all refer to 5G UE, and will not be explained one by one in the following.
  • the communication method provided by the embodiment of the present application is applicable to the communication system shown in FIG. 1, is also applicable to the communication system combined with FIG. 1 and FIG. 2, and is also applicable to the communication system combined with FIG. 1 and FIG. 3.
  • FIG. 5 is a schematic diagram of the composition of a communication device provided by an embodiment of the application.
  • the communication device may include a processor 51, a communication interface 52, and a communication bus 53.
  • each component of the communication device is specifically introduced in conjunction with FIG. 5:
  • the processor 51 is the control center of the communication device, and may be a processor or a collective name for multiple processing elements.
  • the processor 51 is a (central processing unit, CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application, such as : One or more microprocessors (digital signal processor, DSP), or, one or more field-programmable gate arrays (FPGA).
  • DSP digital signal processor
  • FPGA field-programmable gate arrays
  • the processor 51 may include one or more CPUs, such as CPU 0 and CPU 1 shown in FIG. 5.
  • the communication device may further include other processors, such as the processor 55 shown in FIG. 5.
  • processors such as the processor 55 shown in FIG. 5.
  • Each of the multiple processors in the communication device may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU).
  • the processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • the communication interface 52 is used to communicate with other devices or a communication network under the control of the processor 51. For example, it is used to communicate with communication networks such as Ethernet, radio access network (RAN), and wireless local area networks (WLAN).
  • the communication interface 52 may include all or part of the baseband processor, and may also optionally include a radio frequency (RF) processor.
  • the RF processor is used for sending and receiving RF signals
  • the baseband processor is used for processing the baseband signal converted from the RF signal or the baseband signal about to be converted into the RF signal.
  • the communication bus 53 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the communication bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used in FIG. 5 to represent, but it does not mean that there is only one bus or one type of bus.
  • the communication device further includes a memory 54.
  • the memory 54 may be used to store a software program for executing the solution of the present application, and the software program includes program instructions.
  • the processor 51 can execute various functions of the communication device by running or executing a software program stored in the memory 54 and calling data stored in the memory 54.
  • the memory 54 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions
  • ROM read-only memory
  • RAM random access memory
  • EEPROM electrically erasable programmable read-only memory
  • magnetic disk storage media or other magnetic storage devices, or can be used to carry or store instructions or data structures
  • the desired program code and any other medium that can be accessed by the computer but not limited to this.
  • the memory 54 may exist independently and is connected to the processor 51 through the communication bus 53.
  • the memory 54 may also be integrated with the processor 51.
  • the memory 54 is an optional component, it is represented by a dashed frame in FIG. 5.
  • the device structure shown in FIG. 5 does not constitute a limitation on the communication device.
  • the communication device may include more or less components than shown in the figure, or a combination of certain components. Some components, or different component arrangements.
  • the description will be made by taking the terminal having the capability of supporting access to the first network and the second network, and the terminal has already accessed the first network as an example.
  • FIG. 6 is a schematic flowchart of a communication method provided by an embodiment of this application. Referring to Fig. 6, the communication method includes the following steps.
  • the terminal has the ability to access the first network and the second network.
  • the ability of the terminal to access the first network is in an enabled state.
  • the terminal During operation, if the terminal needs to perform the first service, and the terminal cannot perform the first service in the first network, the terminal disables the ability to access the first network.
  • that the terminal cannot execute the first service in the first network refers to: the first network does not support the first service, or the terminal cannot execute the first service in the first network.
  • the NAS layer of the terminal sends a message 1 to the AS layer of the terminal.
  • the message 1 is used to indicate that the terminal has disabled the ability to access the first network.
  • the AS layer of the terminal determines that the wireless capability information of the terminal does not include the first wireless capability information.
  • the first wireless capability information includes information indicating the air interface capability of the terminal to access the first network, information indicating the ability of the terminal to switch from the second network to the first network, and indicating the terminal redirection from the second network ( redirect) to at least one of the capability information of the first network or the information indicating the capability of the terminal to access the first network in a dual connection manner.
  • the terminal accesses the first network in a dual-connection manner
  • the access network equipment that provides services for the terminal includes a primary station and a secondary station connected to the primary station, and the primary station is connected to the core network equipment.
  • the first network is a 5G network
  • the above Figure 2 or Figure 3 both show that the 5G UE accesses the 5G network in a dual connection manner.
  • the above-mentioned air interface capabilities of the terminal to access the first network include the ability of the terminal to support access to the 5G core network through E-UTRA, and the ability of the terminal to support access to the 5G core network through NR.
  • the AS layer of the terminal determines that the wireless capability information of the terminal does not include the following information: information used to indicate the ability of the terminal to access 5GC through E-UTRA technology, and used to indicate the terminal At least one of the information about the ability to access the 5GC through the NR technology or the information used to indicate Option 7.
  • the AS layer of the terminal determines that the wireless capability information of the terminal does not include the first wireless capability information, which can be implemented in multiple ways. In a possible implementation manner, the AS layer of the terminal deletes the first wireless capability information in the wireless capability information of the terminal. In another possible implementation manner, the AS layer of the terminal invalidates the first wireless capability information. It can be seen that after the terminal disables the ability to access the first network, the wireless capability information of the terminal has changed.
  • the terminal requests to access the second network, and establishes a communication connection with the access network device of the second network.
  • the terminal requests to access the second network after disabling access to the first network.
  • the process of the terminal requesting access to the second network can refer to the process of requesting access to a certain network by the terminal in the prior art, which is not described in detail here.
  • the terminal may first establish a communication connection with the access network device of the second network.
  • the terminal sends NAS capability information used to indicate that the terminal has disabled the capability to access the first network to the core network device of the second network.
  • the core network device of the second network is a mobile management entity (mobile management entity, MME).
  • MME mobile management entity
  • the NAS capability information is carried in a location area update (tracking area update, TAU) request message, or carried in an initial UE message (initial UE message).
  • a location area update tilt area update, TAU
  • initial UE message initial UE message
  • the terminal further sends first information to the core network device of the second network, where the first information is used to indicate that the wireless capability of the terminal has changed.
  • the core network device of the second network has stored wireless capability information of the terminal, such as the first wireless capability information and the second wireless capability information used to indicate that the terminal supports access to the second network, the core network device of the second network is in After receiving the first information, delete the first wireless capability information and the second wireless capability information.
  • S603 The core network device of the second network sends instruction information to the access network device of the second network.
  • the indication information is used to indicate to obtain the wireless capability of the terminal, or to indicate that the access network device of the second network cannot access the terminal to the first network.
  • the indication information may be embodied in a direct manner (ie, explicit), or may be embodied in an indirect manner (ie, implicit). For example, if the information sent by the core network device of the second network to the access network device of the second network does not include the first wireless capability information, it means that the access network device of the second network cannot access the terminal to the first network.
  • the indication information is carried in an initial context setup request (initial context setup request) message.
  • the access network device of the second network sends a wireless capability acquisition message to the terminal according to the instruction information.
  • the wireless capability acquisition message is used to request to acquire the wireless capability of the terminal.
  • the access network device of the second network may directly send a wireless capability acquisition message to the terminal according to the indication information to request the acquisition of the wireless capability of the terminal.
  • the access network device of the second network still needs to obtain the wireless capability of the terminal to realize the establishment of the context of the terminal , To further complete the process of the terminal accessing the second network.
  • the radio capability acquisition message is a UE capability enquiry (UE capability enquiry) message.
  • S605 The terminal sends a first notification message for indicating that the terminal does not support access to the first network to the access network device of the second network.
  • the first notification message does not include the foregoing first wireless capability information.
  • the access network device of the second network can learn that the terminal has disabled access to the first network.
  • the access network device of the second network determines to switch the terminal to the target device, the access of the second network
  • the network access device also needs to send handover instruction information for indicating that the terminal does not support access to the first network to the target device, so that the target device determines not to access the terminal to the first network.
  • the communication method provided by the embodiment of the present application further includes S701 after S605.
  • the access network device of the second network sends switching instruction information to the target device, where the switching instruction information is used to indicate that the terminal does not support access to the first network.
  • the terminal may also re-enable the ability to access the first network.
  • the terminal will also send a second notification message to the access network device of the second network to instruct the terminal to support access to the first network.
  • the access network device of the second network can follow the demand The terminal switches to the first network.
  • the communication method provided by the embodiment of the present application further includes S801 and S802 after S605.
  • the terminal enables the ability to access the first network.
  • the terminal sends a second notification message to the access network device of the second network, where the second notification message is used to indicate that the terminal supports access to the first network.
  • the second notification message includes the foregoing first wireless capability information.
  • the embodiment of the present application provides a method for the access network device to learn the ability of the terminal to enable access to the first network, and also provides a method for the access network device to learn the ability of the terminal to re-enable access to the first network.
  • the embodiment of the present application provides a communication device 9 which may be a terminal or a part of a device in the terminal, such as a chip system in the terminal.
  • the chip system is used to support the terminal to implement the functions involved in the foregoing method embodiments, for example, receiving, sending, or processing the data and/or information involved in the foregoing method.
  • the chip system includes a chip, and may also include other discrete devices or circuit structures.
  • the communication device 9 is used to execute the steps executed by the terminal in the method shown in any one of the above figures 6-8.
  • the communication device 9 provided by the embodiment of the present application may include modules corresponding to corresponding steps.
  • the embodiment of the present application may divide the communication device 9 into functional modules according to the foregoing method examples.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 9 shows a possible structural schematic diagram of the communication device 9 in this embodiment.
  • the communication device 9 includes a processing unit 90, a receiving unit 91 and a sending unit 92.
  • the processing unit 90 is used to support the communication device 9 to perform the enabling and disabling operations shown in any one of the drawings in FIGS. 6 to 8, for example: S600, S801, etc., and/or for the technology described herein Other processes.
  • the receiving unit 91 is used to support the communication device 9 to perform the receiving operation shown in any of the above-mentioned figures 6 to 8, for example: S604, etc., and/or other processes used in the technology described herein.
  • the sending unit 92 is used to support the communication device 9 to perform the sending operation shown in any of the above figures 6-8, for example: S602, S605, S802, etc., and/or other processes used in the technology described herein .
  • the communication device 9 provided in the embodiment of the present application includes but is not limited to the aforementioned modules.
  • the communication device 9 may also include a storage unit 93.
  • the storage unit 93 can be used to store the program code of the communication device 9.
  • the above-mentioned processing unit 90 may be the processor 51 in FIG. 5, the above-mentioned receiving unit 91 and the sending unit 92 may be the communication interface 52 in FIG. 5, and the storage unit 93 may be the memory 54 in FIG. 5.
  • FIGS. 6-8 Another embodiment of the present application also provides a computer-readable storage medium.
  • the computer-readable storage medium stores instructions. When the instructions are executed on the communication device 9, the communication device 9 executes any of the instructions shown in FIGS. 6-8. A figure shows the steps of the terminal in the communication method of the embodiment.
  • a computer program product includes computer-executable instructions stored in a computer-readable storage medium; the processor of the communication device 9 can be accessed from the computer The read storage medium reads the computer-executed instruction, and the processor executes the computer-executed instruction to cause the communication device 9 to execute the steps of the terminal in the communication method of the embodiment shown in any one of the drawings in FIGS. 6 to 8.
  • An embodiment of the present application provides a communication device 10, which may be a core network device, or a part of a core network device, such as a chip system in a core network device.
  • the chip system is used to support the core network device to implement the functions involved in the foregoing method embodiments, for example, receiving, sending, or processing the data and/or information involved in the foregoing method.
  • the chip system includes a chip, and may also include other discrete devices or circuit structures.
  • the communication device 10 is used to execute the steps performed by the core network device of the second network in the method shown in any one of the drawings in FIGS. 6 to 8.
  • the communication device 10 provided in the embodiment of the present application may include modules corresponding to corresponding steps.
  • the embodiment of the present application may divide the communication device 10 into functional modules according to the foregoing method examples.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 10 shows a possible schematic structural diagram of the communication device 10 in this embodiment.
  • the communication device 10 includes a processing unit 100, a receiving unit 101, and a sending unit 102.
  • the processing unit 100 is configured to support the communication device 10 to delete the first wireless capability information, the second wireless capability information, etc., and/or other processes used in the technology described herein.
  • the receiving unit 101 is used to support the communication device 10 to perform the receiving operation shown in any of the above-mentioned figures 6-8, for example: S602 etc., and/or other processes used in the technology described herein.
  • the sending unit 102 is used to support the communication device 10 to perform the sending operation shown in any of the above-mentioned figures 6-8, for example: S603 etc., and/or other processes used in the technology described herein.
  • the communication device 10 provided by the embodiment of the present application includes but is not limited to the aforementioned modules.
  • the communication device 10 may further include a storage unit 103.
  • the storage unit 103 may be used to store the program code of the communication device 10.
  • the processing unit 100 may be the processor 51 in FIG. 5, the receiving unit 101 and the sending unit 102 may be the communication interface 52 in FIG. 5, and the storage unit 103 may be the memory 54 in FIG.
  • Another embodiment of the present application further provides a computer-readable storage medium that stores instructions in the computer-readable storage medium.
  • the communication device 10 executes any of the instructions shown in FIGS. 6-8.
  • a computer program product includes computer-executable instructions, and the computer-executable instructions are stored in a computer-readable storage medium; the processor of the communication device 10 can be accessed from a computer Read the storage medium to read the computer-executed instruction, and the processor executes the computer-executed instruction to cause the communication device 10 to execute the core network device of the second network in the communication method of the embodiment shown in any one of the drawings in FIGS. 6 to 8 step.
  • An embodiment of the present application provides a communication device 11, which may be an access network device or part of the device in the access network device, such as a chip system in the access network device.
  • the chip system is used to support the access network device to implement the functions involved in the foregoing method embodiments, for example, receiving, sending, or processing data and/or information involved in the foregoing method.
  • the chip system includes a chip, and may also include other discrete devices or circuit structures.
  • the communication device 11 is used to execute the steps performed by the access network device of the second network in the method shown in any one of the drawings in FIGS. 6 to 8.
  • the communication device 11 provided in the embodiment of the present application may include modules corresponding to corresponding steps.
  • the embodiment of the present application may divide the communication device 11 into functional modules according to the foregoing method examples.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 11 shows a possible schematic structural diagram of the communication device 11 in this embodiment.
  • the communication device 11 includes a processing unit 110, a receiving unit 111, and a sending unit 112.
  • the processing unit 110 is used to support the communication device 11 to complete the communication connection with the terminal, etc., and/or other processes used in the technology described herein.
  • the receiving unit 111 is used to support the communication device 11 to perform the receiving operation shown in any of the above figures 6-8, for example: S603, S605, S802, etc., and/or other processes used in the technology described herein .
  • the sending unit 112 is configured to support the communication device 11 to perform the sending operation shown in any of the above-mentioned figures 6-8, for example: S604, S701, etc., and/or other processes used in the technology described herein.
  • the communication device 11 provided in the embodiment of the present application includes but is not limited to the aforementioned modules.
  • the communication device 11 may also include a storage unit 113.
  • the storage unit 113 may be used to store the program code of the communication device 11.
  • the processing unit 110 may be the processor 51 in FIG. 5, the receiving unit 111 and the sending unit 112 may be the communication interface 52 in FIG. 5, and the storage unit 113 may be the memory 54 in FIG.
  • Another embodiment of the present application further provides a computer-readable storage medium that stores instructions in the computer-readable storage medium.
  • the communication device 11 executes any of the instructions shown in FIGS. 6-8.
  • a computer program product in another embodiment of the present application, includes computer-executable instructions, and the computer-executable instructions are stored in a computer-readable storage medium; the processor of the communication device 11 can be accessed from a computer The read storage medium reads the computer-executed instruction, and the processor executes the computer-executed instruction to cause the communication device 11 to execute the access network equipment of the second network in the communication method of the embodiment shown in any one of the drawings in FIGS. 6 to 8 A step of.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • a software program it may appear in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part.
  • the computer can be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • 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.
  • computer instructions may be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data first access network device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), or a semiconductor medium (for example, a solid state disk (SSD)).
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be other division methods for example, multiple units or components may be It can be combined or integrated into another device, or some features can be omitted 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 parts may or may not be physically separate.
  • the parts displayed as units may be one physical unit or multiple physical units, that is, they may be located in one place, or they may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium.
  • the technical solutions of the embodiments of the present application are essentially or the part that contributes to the prior art, or all or part of the technical solutions can be embodied in the form of software products, which are stored in a storage medium.
  • a device which may be a single-chip microcomputer, a chip, etc.
  • a processor processor
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

本申请实施例公开一种通信方法及装置，涉及通信技术领域，实现了接入网设备确定终端已经去使能接入第一网络的能力。该方法包括：终端去使能接入第一网络的能力；终端接收来自第二网络的接入网设备的无线能力获取消息，该无线能力获取消息用于请求获取终端的无线能力；终端向第二网络的接入网设备发送第一通知消息，该第一通知消息用于指示终端不支持第一网络的接入。这样，第二网络的接入网设备即可获知终端已经去使能接入第一网络。

Description

一种通信方法及装置
本申请要求于2019年03月29日提交国家知识产权局、申请号为201910252509.8、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术领域，尤其涉及一种通信方法及装置。
背景技术
随着通信技术的发展，出现了既可以接入分组核心演进(the evolved packet core，EPC)，又可以接入第五代核心网(the 5th generation core network，5GCN)的终端，其中，5GCN也可以称为5GC。
目前，相关标准规定：若上述终端在第五代通信技术(the 5 generation mobile communication technology，5G)网络中无法执行第一业务(如5G网络不支持第一业务，或者，在5G网络中终端不支持执行第一业务)，则终端去使能该终端的N1模式(mode)能力，即去使能终端接入5GC的能力。
在这种情况下，若第四代通信技术(the 4 generation mobile communication technology，4G)网络支持第一业务，则终端接入EPC。为了避免将该终端切换/重定向至5GC，4G网络的接入网设备需要获知终端已经去使能N1模式能力。但是，目前还不存在接入网设备如何获知终端已经去使能N1模式能力的方法。
发明内容
本申请实施例提供一种通信方法及装置，提供了接入网设备确定终端已经去使能NI模式能力的方式。
为达到上述目的，本申请实施例采用如下技术方案：
第一方面，提供一种通信方法，终端在去使能接入第一网络的能力后，接收来自第二网络的接入网设备的无线能力获取消息，该无线能力获取消息用于请求获取终端的无线能力，相应的，该终端向第二网络的接入网设备发送用于指示该终端不支持第一网络的接入的第一通知消息，这样，第二网络的接入网设备即可获知终端已经去使能接入第一网络。可以看出，本申请提供的通信方法能够使得接入网设备获知终端已经去使能接入第一网络。
可选地，若第一网络为5G网络，第二网络为4G网络，则本申请实施例提供的通信方法能够使得4G网络的接入网设备获知终端已经去使能N1模式能力。
若第一网络为4G网络，第二网络为5G网络，则本申请实施例提供的通信方法能够使得5G网络的接入网设备获知终端已经去使能S1模式能力。终端的S1模式能力是指终端接入EPC的能力。
可选地，在本申请的一种可能的实现方式中，在去使能接入第一网络的能力后， 终端还向第二网络的核心网设备发送用于指示终端的无线能力发生变化的第一信息，以便于已经存储有终端的无线能力信息的第二网络的核心网设备删除其存储的终端的无线能力信息。
可选地，在本申请的另一种可能的实现方式中，本申请提供的通信方法还包括：终端使能接入第一网络的能力，并向第二网络的接入网设备发送第二通知消息，第二通知消息用于指示终端支持第一网络的接入。
在终端已经去使能接入第一网络的能力的场景中，根据实际需求，该终端还可以重新使能接入第一网络的能力。当终端重新使能接入第一网络的能力时，该终端还可向第二网络的接入网设备发送第二通知消息。这样，第二网络的接入网设备即可获知终端使能接入第一网络，进而可将该终端切换至第一网络。
可选地，在本申请的另一种可能的实现方式中，第一通知消息不包括第一无线能力信息，第一无线能力信息包括用于表示终端接入第一网络的空口能力的信息、用于表示终端从第二网络切换至第一网络的能力的信息、用于表示终端从第二网络重定向至第一网络的能力的信息、或者用于表示终端以双连接的方式接入到第一网络的能力的信息中的至少一种。
可选地，在本申请的另一种可能的实现方式中，若第一网络为第五代通信技术5G网络，终端接入第一网络的空口能力包括终端支持通过演进通用陆地无线接入(evolved universal terrestrial radio access，E-UTRA)接入5G核心网的能力，以及终端支持通过新空口(new radio，NR)接入5G核心网的能力。
第二方面，提供一种通信装置，该通信装置能够实现第一方面及其任意一种可能的实现方式中的功能。这些功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
在本申请的一种可能的方式中，该通信装置可以包括处理单元、接收单元和发送单元，该处理单元、接收单元和发送单元可以执行上述第一方面及其任意一种可能的实现方式的通信方法中的相应功能，例如：处理单元，用于去使能接入第一网络的能力。接收单元，用于接收来自第二网络的接入网设备的无线能力获取消息，该无线能力获取消息用于请求获取终端的无线能力。发送单元，用于向第二网络的接入网设备发送第一通知消息，第一通知消息用于指示终端不支持第一网络的接入。
第三方面，提供一种通信装置，该通信装置包括处理器，所述处理器用于与存储器耦合，读取并执行所述存储器中的指令，以实现上述第一方面及其任意一种可能的实现方式所述的通信方法。
可选地，该通信装置还可以包括存储器，该存储器用于保存该通信装置的程序指令和数据。
进一步可选地，该通信装置还可以包括通信接口，该通信接口用于在所述通信装置的处理器的控制下，执行上述第一方面及其任意一种可能的实现方式所述的通信方法中收发数据、信令或信息的步骤，例如，接收无线能力获取消息，发送第一通知消息。
可选地，该通信装置可以是终端，也可以是终端中的一部分装置，例如终端中的芯片系统。该芯片系统用于支持终端实现第一方面及其任意一种可能的实现方式中所 涉及的功能，例如，接收或处理上述通信方法中所涉及的数据和/或信息。该芯片系统包括芯片，也可以包括其他分立器件或电路结构。
第四方面，还提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令；当其在通信装置上运行时，使得通信装置执行如上述第一方面及其各种可能的实现方式所述的通信方法。
第五方面，还提供一种包括指令的计算机程序产品，当其在通信装置上运行时，使得通信装置执行如上述第一方面及其各种可能的实现方式所述的通信方法。
需要说明的是，上述指令可以全部或者部分存储在第一计算机存储介质上，其中，第一计算机存储介质可以与处理器封装在一起的，也可以与处理器单独封装，本申请对此不作具体限定。
本申请中第二方面、第三方面、第四方面、第五方面及其各种实现方式的具体描述，可以参考第一方面及其各种实现方式中的详细描述；并且，第二方面、第三方面、第四方面、第五方面及其各种实现方式的有益效果，可以参考第一方面及其各种实现方式中的有益效果分析，此处不再赘述。
第六方面，提供一种通信方法，第二网络的核心网设备在接收到用于指示终端已经去使能接入第一网络的能力的非接入NAS能力信息后，向第二网络的接入网设备发送指示信息，该指示信息用于指示获取终端的无线能力，或者用于指示第二网络的接入网设备不能将终端接入到第一网络，这样，第二网络的接入网设备即可获知终端已经去使能接入第一网络，进而不会将该终端接入到第一网络。
可选地，在本申请的一种可能的实现方式中，第二网络的核心网设备向第二网络的接入网设备发送指示信息之前，还接收来自终端的第一信息，该第一信息用于指示终端的无线能力发生变化；后续，第二网络的核心网设备根据第一信息，删除第一无线能力信息和第二无线能力信息。其中，第一无线能力信息用于表示终端支持第一网络的接入，第二无线能力信息用于表示终端支持第二网络的接入。
第二网络的核心网设备在为已经去使能接入第一网络的能力的终端提供服务之前，可能已经存储有第一无线能力信息和第二无线能力信息。在接收到第一信息后，第二网络的核心网设备获知终端的无线能力发生变化，这时，第二网络的核心网设备存储的无线能力信息与终端的无线能力不对应，因此，第二网络的核心网设备删除第一无线能力信息和第二无线能力信息。
可选地，在本申请的另一种可能的实现方式中，第一无线能力信息包括用于表示终端接入第一网络的空口能力的信息、用于表示终端从第二网络切换至第一网络的能力的信息、用于表示终端从第二网络重定向至第一网络的能力的信息、或者用于表示终端以双连接的方式接入到第一网络的能力的信息中的至少一种；
第二无线能力信息包括用于表示终端接入第二网络的空口能力的信息、用于表示终端从第一网络切换至第二网络的能力的信息、用于表示终端从第一网络重定向至第二网络的能力的信息、或者用于表示终端以双连接的方式接入到第二网络的能力的信息中的至少一种。
可选地，在本申请的另一种可能的实现方式中，若第一网络为第五代通信技术5G网络，终端接入第一网络的空口能力包括终端支持通过演进通用陆地无线接入 E-UTRA接入5G核心网的能力，以及所述终端支持通过新空口NR接入5G核心网的能力；若第二网络为第五代通信技术5G网络，终端接入第二网络的空口能力包括终端支持通过E-UTRA接入5G核心网的能力，以及所述终端支持通过NR接入5G核心网的能力。
第七方面，提供一种通信装置，该通信装置能够实现第六方面及其任意一种可能的实现方式中的功能。这些功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
在本申请的一种可能的方式中，该通信装置可以包括接收单元和发送单元，该接收单元和发送单元可以执行上述第六方面及其任意一种可能的实现方式所述的通信方法中的相应功能，例如：接收单元，用于接收来自终端的非接入NAS能力信息，NAS能力信息用于指示终端已经去使能接入第一网络的能力。发送单元，用于向第二网络的接入网设备发送指示信息，该指示信息用于指示获取终端的无线能力，或者，用于指示第二网络的接入网设备不能将终端接入到第一网络。
第八方面，提供一种通信装置，该通信装置包括处理器，所述处理器用于与存储器耦合，读取并执行所述存储器中的指令，以实现上述第六方面及其任意一种可能的实现方式所述的通信方法。
可选地，该通信装置还可以包括存储器，该存储器用于保存通信装置的程序指令和数据。
进一步地，可选地，该通信装置还可以包括通信接口，该通信接口用于在所述通信装置的处理器的控制下，执行上述第六方面及其任意一种可能的实现方式所述的通信方法中收发数据、信令或信息的步骤，例如，接收NAS能力信息，发送指示信息。
可选地，该通信装置可以是第二网络的核心网设备，也可以是第二网络的核心网设备中的一部分装置，例如第二网络的核心网设备中的芯片系统。该芯片系统用于支持第二网络的核心网设备实现第六方面及其任意一种可能的实现方式中所涉及的功能，例如，发送或处理上述通信方法中所涉及的数据和/或信息。该芯片系统包括芯片，也可以包括其他分立器件或电路结构。
第九方面，还提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令；当其在通信装置上运行时，使得通信装置执行如上述第六方面及其各种可能的实现方式所述的通信方法。
第十方面，还提供一种包括指令的计算机程序产品，当其在通信装置上运行时，使得通信装置执行如上述第六方面及其各种可能的实现方式所述的通信方法。
需要说明的是，上述指令可以全部或者部分存储在第一计算机存储介质上，其中，第一计算机存储介质可以与处理器封装在一起的，也可以与处理器单独封装，本申请对此不作具体限定。
本申请中第七方面、第八方面、第九方面、第十方面及其各种实现方式的具体描述，可以参考第六方面及其各种实现方式中的详细描述；并且，第七方面、第八方面、第九方面、第十方面及其各种实现方式的有益效果，可以参考第六方面及其各种实现方式中的有益效果分析，此处不再赘述。
第十一方面，提供一种通信方法，第二网络的接入网设备向终端发送用于请求获 取终端的无线能力的无线能力获取消息，后续，该第二网络的接入网设备接收来自终端的第一通知消息，该第一通知消息用于指示终端不支持第一网络的接入。这样，第二网络的接入网设备即可根据第一通知消息确定终端不支持第一网络的接入。
容易理解的是，对于具备接入第一网络和第二网络的终端而言，若该终端不支持第一网络的接入，可认为终端去使能接入第一网络。
可选地，在本申请的一种可能的实现方式中，除了上述描述，第二网络的接入网设备还向目标设备发送切换指示信息，该切换指示信息用于指示终端不支持第一网络的接入。这样，在第二网络的接入网设备确定将该终端切换到目标设备的场景中，目标设备可根据切换指示信息确定不能将该终端接入第一网络，保持了该终端性能的一致性，减少了不必要的信令交互，进而减少了资源的浪费。
可选地，在本申请的另一种可能的实现方式中，在向终端发送无线能力获取消息之前，第二网络的接入网设备还建立与终端的通信连接，并会接收到来自第二网络的核心网设备的指示信息。该指示信息可以用于指示获取终端的无线能力，也可以用于指示第二网络的接入网设备不能将终端接入到第一网络。
在第二网络的接入网设备与终端建立通信连接的场景中，若第二网络的接入网设备未能从第二网络的核心网设备获取到终端的无线能力，则该第二网络的接入网设备与终端通信，以获取该终端的无线能力，这样，第二网络的接入网设备即可获知终端是否去使能接入第一网络。若第二网络的接入网设备获取到第二网络的核心网设备发送的用于指示不能将终端接入到第一网络的指示信息，则第二网络的接入网设备可根据该指示信息确定终端的无线能力。
可选地，在本申请的另一种可能的实现方式中，第二网络的接入网设备还接收来自终端的第二通知消息，该第二通知消息用于指示终端支持第一网络的接入。
在终端已经去使能接入第一网络的能力的场景中，该终端还可以重新使能接入第一网络的能力。若终端重新使能接入第一网络的能力，则该终端可向第二网络的接入网设备发送用于指示终端支持第一网络的接入的第二通知消息，这样，第二网络的接入网设备可及时确定终端的无线能力。
可选地，在本申请的另一种可能的实现方式中，第一通知消息不包括第一无线能力信息，第一无线能力信息包括用于表示终端接入第一网络的空口能力的信息、用于表示终端从第二网络切换至第一网络的能力的信息、用于表示终端从第二网络重定向至第一网络的能力的信息、或者用于表示终端以双连接的方式接入到第一网络的能力的信息中的至少一种。
可选地，在本申请的另一种可能的实现方式中，若第一网络为第五代通信技术5G网络，终端接入第一网络的空口能力包括终端支持通过E-UTRA接入5G核心网的能力，以及所述终端支持通过NR接入5G核心网的能力。
第十二方面，提供一种通信装置，该通信装置能够实现第十一方面及其任意一种可能的实现方式中的功能。这些功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
在本申请的一种可能的方式中，该通信装置可以包括发送单元和接收单元，该发送单元和接收单元可以执行上述第十一方面及其任意一种可能的实现方式所述的通信 方法中的相应功能，例如：发送单元，用于向终端发送无线能力获取消息，该无线能力获取消息用于请求获取终端的无线能力。接收单元，用于接收来自终端的第一通知消息，第一通知消息用于指示终端不支持第一网络的接入。
第十三方面，提供一种通信装置，该通信装置包括处理器，所述处理器用于与存储器耦合，读取并执行所述存储器中的指令，以实现上述第十一方面及其任意一种可能的实现方式所述的通信方法。
可选地，该通信装置还可以包括存储器，该存储器用于保存通信装置的程序指令和数据。
进一步地，可选地，该通信装置还可以包括通信接口，该通信接口用于在所述通信装置的处理器的控制下，执行上述第十一方面及其任意一种可能的实现方式所述的通信方法中收发数据、信令或信息的步骤，例如，发送测量配置信息。
可选地，该通信装置可以是第二网络的接入网设备，也可以是第二网络的接入网设备中的一部分装置，例如第二网络的接入网设备中的芯片系统。该芯片系统用于支持第二网络的接入网设备实现第十一方面及其任意一种可能的实现方式中所涉及的功能，例如，发送或处理上述通信方法中所涉及的数据和/或信息。该芯片系统包括芯片，也可以包括其他分立器件或电路结构。
第十四方面，还提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令；当其在通信装置上运行时，使得通信装置执行如上述第十一方面及其各种可能的实现方式所述的通信方法。
第十五方面，还提供一种包括指令的计算机程序产品，当其在通信装置上运行时，使得通信装置执行如上述第十一方面及其各种可能的实现方式所述的通信方法。
需要说明的是，上述指令可以全部或者部分存储在第一计算机存储介质上，其中，第一计算机存储介质可以与处理器封装在一起的，也可以与处理器单独封装，本申请对此不作具体限定。
本申请中第十二方面、第十三方面、第十四方面、第十五方面及其各种实现方式的具体描述，可以参考第十一方面及其各种实现方式中的详细描述；并且，第十二方面、第十三方面、第十四方面、第十五方面及其各种实现方式的有益效果，可以参考第十一方面及其各种实现方式中的有益效果分析，此处不再赘述。
第十六方面，提供一种通信系统，该通信系统包括如上述第二方面到第五方面中任一方面所述的通信装置，如上述第七方面至第十方面中任一方面所述的通信装置，以及如上述第十二方面至第十五方面中任一方面所述的通信装置。
在本申请中，上述通信装置的名字对设备或功能模块本身不构成限定，在实际实现中，这些设备或功能模块可以以其他名称出现。只要各个设备或功能模块的功能和本申请类似，属于本申请权利要求及其等同技术的范围之内。
本申请的这些方面或其他方面在以下的描述中会更加简明易懂。
附图说明
图1为常见的通信系统的结构示意图；
图2为NEDC通信系统的结构示意图；
图3为NG-ENDC通信系统的结构示意图；
图4为本申请实施例中5G UE的协议栈的结构示意图；
图5为本申请实施例提供的通信装置的硬件结构示意图；
图6为本申请实施例提供的通信方法的流程示意图一；
图7为本申请实施例提供的通信方法的流程示意图二；
图8为本申请实施例提供的通信方法的流程示意图三；
图9为本申请实施例提供的通信装置的结构示意图一；
图10为本申请实施例提供的通信装置的结构示意图二；
图11为本申请实施例提供的通信装置的结构示意图三。
具体实施方式
在本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
以下，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请实施例的描述中，除非另有说明，“多个”的含义是两个或两个以上。
随着通信技术的发展，4G网络中的演进式基站(evolved node base station，eNB)可演进为下一代演进式基站(next generation eNB，ng-eNB)。ng-eNB通过E-UTRA技术为终端提供无线传输资源。ng-eNB可以为终端提供5GC的服务，也可以为终端提供EPC的服务。在实际部署中，ng-eNB可以仅仅与5GC/EPC连接，也可以同时与5GC和EPC连接。
5G网络的接入网(radio access network，RAN)称为下一代RAN(next generation ran，NG-RAN)，NG-RAN节点包括ng-eNB和gNB(5G系统中的基站)。其中，gNB通过NR技术为5G UE提供无线传输资源，并为5G UE提供5GC的服务。后续，将4G系统中的UE称为4G UE，将4G系统中的eNB称为4G eNB，将5G系统的UE称为5G UE。
图1示出了常见的通信系统的结构。如图1所示，ng-eNB可通过S1接口接入到EPC，也可通过其他相应接口(图1中用NG表示)接入到5GC。相应的，与ng-eNB连接的5G UE可通过ng-eNB接入到5GC，与ng-eNB连接的4G UE可通过ng-eNB接入EPC。4G eNB与连接了EPC的ng-eNB之间通过X2接口连接，ng-eNB与gNB之间通过Xn接口连接。
在实际应用中上述多个设备之间的连接可能为无线连接，为了方便直观地表示各个设备之间的连接关系，图1中采用实线示意。
可以看出，5G UE可以通过gNB接入到5GC，也可以通过ng-eNB接入到5GC，还可以通过ng-eNB接入到EPC。
可选地，在图1的基础上，ng-eNB和/或gNB还可以为5G UE配置双连接(dual connectivity，DC)操作，并将5G UE接入到5GC。示例性的，图2和图3示出了ng-eNB与gNB进行双连接的通信系统。
图2示出的通信系统可以称为NEDC(NR E-UTRA DC)通信系统。
NEDC也称为Option 4/4A。在NEDC通信系统中，gNB为主站(master node，MN)，ng-eNB为辅站(secondary node，SN)，并且MN与5GC连接，MN与SN为“5G UE与5GC之间的数据”提供空口传输资源。
如图2所示，图2中的(a)为Option 4通信系统的结构示意图，图2中的(b)为Option 4A通信系统的结构示意图。Option 4通信系统中，gNB通过NG接口(包括NG-C接口和NG-U接口)与5GC连接，ng-eNB与gNB通过Xn接口连接。与Option 4通信系统不同的是，Option 4A通信系统中，ng-eNB还通过NG-U接口与5GC连接。为了便于区分，图2中用虚线表示控制面的连接。
图3示出的通信系统可以称为NG-ENDC(Next Generation E-UTRA NR DC)通信系统。
NG-ENDC也称为Option 7/7A/7X。在NG-ENDC通信系统中，ng-eNB为MN，gNB为SN，并且MN与5GC连接，MN与SN为“终端与5GC之间的数据”提供空口传输资源。
如图3所示，图3中的(a)为Option 7通信系统的结构示意图，图3中的(b)为Option 7A通信系统的结构示意图。Option 7通信系统中，ng-eNB通过NG接口(包括NG-C接口和NG-U接口)与5GC连接，ng-eNB与gNB通过Xn接口连接。与Option 7通信系统不同的是，Option 7A通信系统中，gNB还通过NG-U接口与5GC连接。为了便于区分，图3中用虚线表示控制面的连接。
在实际应用中，还存在支持MN和SN均为gNB的双连接通信系统，这里不再一一进行描述。
通常情况下，上述5G UE的协议栈包括物理层(physical layer，PHY层)、媒体接入控制(media access control，MAC)层、无线链路控制(radio link control，RLC)层、分组数据汇聚协议(packet data convergence protocol，PDCP)层、无线资源控制(radio resource control，RRC)层和非接入(non-access stratum，NAS)层。其中，PHY层，MAC层，RLC层，PDCP层，以及RRC层可属于接入(access stratum，AS)层，AS层用于实现终端与接入网设备之间的通信，NAS层用于实现终端与核心网设备之间的通信。
可选地，5G UE的NAS层可视为包括与演进分组系统(evolved packet system，EPS)对应的EPS NAS层和与5G系统(5G system，5GS)对应的5GS NAS层。EPS NAS层可生成用于接入EPC网络的NAS消息，5GS NAS层可生成用于接入5GC的NAS消息。此外，EPS和5GS可以共用PHY层、MAC层、RLC层、PDCP层以及RRC层。图4中的(a)示出了5G UE的这一协议栈结构。
或者，5G UE的NAS层可视为包括与演进分组系统(evolved packet system，EPS)对应的EPS NAS层和与5G系统(5G system，5GS)对应的5GS NAS层，RRC层可视为包括与EPS对应的EPS RRC层和与5GS对应的5GS RRC层。EPS NAS层和5GS NAS层的功能可以参考上述描述。EPS RRC层可生成用于接入EPC网络的RRC消息，5GS RRC层可生成用于接入5GC的RRC消息。此外，EPS和5GS可以共用PHY层、MAC层、RLC层以及PDCP层。图4中的(b)示出了5G UE的这一协议栈结构。
当然，除了上述图4所示的协议栈，本申请实施例中的5G UE的协议栈中，对于EPS和5GS，还可以仅仅共用PHY层、MAC层以及RLC层，或者仅仅共用PHY层和MAC层，或者仅仅共用PHY层，或者每一协议层均不共用。此处不再进行详细赘述。
目前，相关标准规定：若5G UE在5G网络中无法执行第一业务(如第一业务为IMS语音业务)，则去使能该终端的N1模式(mode)能力，即去使能终端接入5GC的能力。其中，5G UE无法在5G网络中执行第一业务可以指5G网络不支持第一业务或者在5G网络中5G UE不支持执行第一业务。
5G UE去使能N1模式能力的具体行为是：5G UE接入EPC。为了避免将该终端切换/重定向至5GC，4G网络的接入网设备需要获知终端已经去使能N1模式能力。但是，目前还不存在接入网设备如何获知终端已经去使能N1模式能力的方法。
为此，本申请实施例提供一种通信方法及装置，终端在去使能接入第一网络的能力后，接收来自第二网络的接入网设备的无线能力获取消息，该无线能力获取消息用于请求获取终端的无线能力，相应的，该终端向第二网络的接入网设备发送用于指示该终端不支持第一网络的接入的第一通知消息，这样，第二网络的接入网设备即可获知终端已经去使能接入第一网络。可以看出，本申请实施例提供的通信方法能够使得接入网设备获知终端已经去使能接入第一网络。
可选地，若第一网络为5G网络，第二网络为4G网络，则本申请实施例提供的通信方法能够使得4G网络的接入网设备获知终端已经去使能N1模式能力。
若第一网络为4G网络，第二网络为5G网络，则本申请实施例提供的通信方法能够使得5G网络的接入网设备获知终端已经去使能S1模式能力。终端的S1模式能力是指终端接入EPC的能力。
本申请实施例涉及到的终端均表示5G UE，后续不再一一解释。
本申请实施例提供的通信方法适用于图1所示的通信系统，也适用于图1和图2相结合的通信系统，还适用于图1和图3相结合的通信系统。
上述图1～图3中的各个设备均属于通信装置。在具体实现时，通信装置具有图5所示部件。图5为本申请实施例提供的一种通信装置的组成示意图，如图5所示，该通信装置可以包括处理器51、通信接口52、通信总线53。下面结合图5对通信装置的各个构成部件进行具体的介绍：
处理器51是通信装置的控制中心，可以是一个处理器，也可以是多个处理元件的统称。例如，处理器51是一个(central processing unit，CPU)，也可以是特定集成电路(application-specific integrated circuit，ASIC)，或者是被配置成实施本申请实施例的一个或多个集成电路，例如：一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(field-programmable gate array，FPGA)。
作为一种实施例，处理器51可以包括一个或多个CPU，例如图5中所示的CPU 0和CPU 1。
作为一种实施例，通信装置还可以包括其他处理器，例如图5中所示的处理器55。通信装置中的多个处理器中的每一个可以是一个单核处理器(single-CPU)，也可以是一个多核处理器(multi-CPU)。这里的处理器可以指一个或多个设备、电路、和/ 或用于处理数据(例如计算机程序指令)的处理核。
通信接口52，用于在处理器51的控制下与其他设备或通信网络通信。如用于与以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等通信网络通信。通信接口52可以包括基带处理器的全部或部分，以及还可选择性地包括射频(radio frequency，RF)处理器。RF处理器用于收发RF信号，基带处理器则用于实现由RF信号转换的基带信号或即将转换为RF信号的基带信号的处理。
通信总线53，可以是工业标准体系结构(Industry Standard Architecture，ISA)总线、外部设备互连(Peripheral Component Interconnect，PCI)总线或扩展工业标准体系结构(Extended Industry Standard Architecture，EISA)总线等。该通信总线可以分为地址总线、数据总线、控制总线等。为便于表示，图5中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
可选地，通信装置还包括存储器54。
存储器54，可以用于存储执行本申请方案的软件程序，所述软件程序包括程序指令。处理器51可以通过运行或执行存储在存储器54内的软件程序，以及调用存储在存储器54内的数据，执行通信装置的各种功能。
存储器54可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器54可以是独立存在，通过通信总线53与处理器51相连接。存储器54也可以和处理器51集成在一起。
由于存储器54为可选的部件，图5中采用虚线框表示。
需要说明的是，图5中示出的设备结构并不构成对通信装置的限定，除图5所示部件之外，该通信装置可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
下面结合图1～图3所示的通信系统，图5所示的通信装置对本申请实施例提供的通信方法进行描述。其中，下述方法实施例中提及的各个设备均可以具有图5所示组成部分，不再赘述。
为了便于理解本申请实施例，以终端具备支持接入第一网络和第二网络的能力，该终端已接入到第一网络为例进行说明。
图6为本申请实施例提供的一种通信方法的流程示意图。参见图6，该通信方法包括如下步骤。
S600、若在第一网络中无法执行第一业务，终端去使能接入第一网络的能力。
终端具备接入第一网络和第二网络的能力。在终端接入到第一网络的场景中，终端接入第一网络的能力处于使能状态。
在运行过程中，若终端需要执行第一业务，该终端在第一网络中无法执行第一业务，则终端去使能接入第一网络的能力。
可选地，终端在第一网络中无法执行第一业务指：第一网络不支持第一业务，或者在第一网络中终端无法执行第一业务。
具体的，当终端去使能接入第一网络的能力时，终端的NAS层向该终端的AS层发送消息1，该消息1用于指示终端已经去使能接入第一网络的能力。这样，终端的AS层确定该终端的无线能力信息不包括第一无线能力信息。
第一无线能力信息包括用于表示终端接入第一网络的空口能力的信息、用于表示终端从第二网络切换至第一网络的能力的信息、用于表示终端从第二网络重定向(redirect)至第一网络的能力的信息、或者用于表示终端以双连接的方式接入到第一网络的能力的信息中的至少一种。
其中，“终端以双连接的方式接入到第一网络”指为终端提供服务的接入网设备包括主站，以及与主站连接的辅站，该主站与核心网设备连接。例如，若第一网络为5G网络，上述图2或图3均示出了5G UE以双连接的方式接入5G网络。
若第一网络为5G网络，上述终端接入第一网络的空口能力包括终端支持通过E-UTRA接入5G核心网的能力，以及终端支持通过NR接入5G核心网的能力。
示例性的，若第一网络为5G网络，则终端的AS层确定终端的无线能力信息不包括下述信息：用于指示终端通过E-UTRA技术接入5GC的能力的信息、用于指示终端通过NR技术接入5GC的能力的信息、或者用于指示Option 7的信息中的至少一个。
终端的AS层确定该终端的无线能力信息不包括第一无线能力信息可以采用多种方式实现。在一种可能的实现方式中，终端的AS层删除该终端的无线能力信息中的第一无线能力信息。在另一种可能的实现方式中，终端的AS层将第一无线能力信息置为无效。可以看出，在终端去使能接入第一网络的能力后，该终端的无线能力信息发生了变化。
S601、终端请求接入第二网络，建立与第二网络的接入网设备之间的通信连接。
若终端在第二网络中能够执行第一业务，则该终端在去使能接入第一网络后，请求接入第二网络。终端请求接入第二网络的流程可以参考现有技术中终端请求接入某一网络的流程，这里不再进行详细描述。
在终端请求接入第二网络的过程中，终端可以先与第二网络的接入网设备建立通信连接。
S602、终端向第二网络的核心网设备发送用于指示终端已经去使能接入第一网络的能力的NAS能力信息。
示例性的，第二网络的核心网设备为移动管理实体(mobile managenment entity，MME)。
可选地，NAS能力信息携带于位置区域更新(tracking area update，TAU)请求消息中，或者携带于初始UE消息(initial UE message)中。
可选地，终端还向第二网络的核心网设备发送第一信息，该第一信息用于指示终端的无线能力发生变化。
若第二网络的核心网设备已经存储有终端的无线能力信息，如第一无线能力信息和用于表示终端支持接入第二网络的第二无线能力信息，则第二网络的核心网设备在接收到第一信息后，删除第一无线能力信息和第二无线能力信息。
S603、第二网络的核心网设备向第二网络的接入网设备发送指示信息。
指示信息用于指示获取终端的无线能力，或者，用于指示第二网络的接入网设备不能将终端接入到第一网络。
可选地，该指示信息可以采用直接方式(即显式)体现，也可以采用间接方式(即隐式)体现。例如，第二网络的核心网设备向第二网络的接入网设备发送信息中未包括第一无线能力信息，则说明第二网络的接入网设备不能将终端接入到第一网络。
可选地，指示信息携带于初始上下文设置请求(initial context setup request)消息中。
S604、第二网络的接入网设备根据指示信息，向终端发送无线能力获取消息。
该无线能力获取消息用于请求获取终端的无线能力。
若指示信息用于指示获取终端的无线能力，则第二网络的接入网设备在接收到指示信息后，可直接根据该指示信息向终端发送无线能力获取消息，以请求获取终端的无线能力。
若指示信息用于指示第二网络的接入网设备不能将终端接入到第一网络，则第二网络的接入网设备仍需要获取到终端的无线能力，以实现该终端的上下文的建立，进一步完成终端接入第二网络的流程。
可选地，无线能力获取消息为UE能力查询(UE capability enquiry)消息。
S605、终端向第二网络的接入网设备发送用于指示终端不支持第一网络的接入的第一通知消息。
该第一通知消息不包括上述第一无线能力信息。
可以看出，在终端、第二网络的接入网设备以及第二网络的核心网设备相互通信的作用下，第二网络的接入网设备可以获知终端已经去使能接入第一网络。
进一步地，在终端已经去使能接入第一网络，且已经接入第二网络的场景中，若第二网络的接入网设备确定将终端切换到目标设备，则该第二网络的接入网设备还需要向目标设备发送用于指示终端不支持第一网络的接入的切换指示信息，以便于目标设备确定不将该终端接入第一网络。
结合上述图6，如图7所示，本申请实施例提供的通信方法在S605之后还包括S701。
S701、第二网络的接入网设备向目标设备发送切换指示信息，切换指示信息用于指示终端不支持第一网络的接入。
在实际应用中，根据业务需求，在终端接入第二网络的场景中，该终端还可能会重新使能接入第一网络的能力。这种情况下，终端还会向第二网络的接入网设备发送第二通知消息，用于指示终端支持第一网络的接入，这样，后续第二网络的接入网设备可根据需求将该终端切换至第一网络。
结合上述图6，如图8所示，本申请实施例提供的通信方法在S605之后还包括S801和S802。
S801、终端使能接入第一网络的能力。
S802、终端向第二网络的接入网设备发送第二通知消息，第二通知消息用于指示终端支持第一网络的接入。
该第二通知消息包括上述第一无线能力信息。
综上，本申请实施例提供了接入网设备获知终端去使能接入第一网络的能力的方法，还提供了接入网设备获知终端重新使能接入第一网络的能力的方法。
本申请实施例提供一种通信装置9，该通信装置9可以为终端，也可以为终端中的部分装置，例如终端中的芯片系统。可选的，该芯片系统，用于支持终端实现上述方法实施例中所涉及的功能，例如，接收，发送，或处理上述方法中所涉及的数据和/或信息。该芯片系统包括芯片，也可以包括其他分立器件或电路结构。
该通信装置9用于执行以上图6～图8中任一附图所示方法中的终端所执行的步骤。本申请实施例提供的通信装置9可以包括相应步骤所对应的模块。
本申请实施例可以根据上述方法示例对通信装置9进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。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。
在采用对应各个功能划分各个功能模块的情况下，图9示出了本实施例中通信装置9的一种可能的结构示意图。如图9所示，通信装置9包括处理单元90、接收单元91和发送单元92。
处理单元90用于支持该通信装置9执行上述图6～图8中任一附图所示的使能、去使能操作，例如：S600、S801等，和/或用于本文所描述的技术的其它过程。
接收单元91用于支持该通信装置9执行上述图6～图8中任一附图所示的接收操作，例如：S604等，和/或用于本文所描述的技术的其它过程。
发送单元92用于支持该通信装置9执行上述图6～图8中任一附图所示的发送操作，例如：S602、S605、S802等，和/或用于本文所描述的技术的其它过程。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
当然，本申请实施例提供的通信装置9包括但不限于上述模块，例如通信装置9还可以包括存储单元93。
存储单元93可以用于存储该通信装置9的程序代码。
本申请提供的通信装置9的实体框图可以参考上述图5。上述处理单元90可以是图5中的处理器51，上述接收单元91和发送单元92可以是图5中的通信接口52，存储单元93可以是图5中的存储器54。
本申请另一实施例还提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当指令在通信装置9上运行时，该通信装置9执行如图6～图8中任一附图所示的实施例的通信方法中终端的步骤。
在本申请的另一实施例中，还提供一种计算机程序产品，该计算机程序产品包括计算机执行指令，该计算机执行指令存储在计算机可读存储介质中；通信装置9的处理器可以从计算机可读存储介质读取该计算机执行指令，处理器执行该计算机执行指令使得通信装置9执行如图6～图8中任一附图所示的实施例的通信方法中终端的步骤。
本申请实施例提供一种通信装置10，该通信装置10可以为核心网设备，也可以为核心网设备中的部分装置，例如核心网设备中的芯片系统。可选的，该芯片系统， 用于支持核心网设备实现上述方法实施例中所涉及的功能，例如，接收，发送，或处理上述方法中所涉及的数据和/或信息。该芯片系统包括芯片，也可以包括其他分立器件或电路结构。
该通信装置10用于执行图6～图8中任一附图所示方法中第二网络的核心网设备所执行的步骤。本申请实施例提供的通信装置10可以包括相应步骤所对应的模块。
本申请实施例可以根据上述方法示例对通信装置10进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。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。
在采用对应各个功能划分各个功能模块的情况下，图10示出了本实施例中通信装置10的一种可能的结构示意图。如图10所示，通信装置10包括处理单元100、接收单元101和发送单元102。
处理单元100用于支持该通信装置10删除第一无线能力信息和第二无线能力信息等，和/或用于本文所描述的技术的其它过程。
接收单元101用于支持该通信装置10执行上述图6～图8中任一附图所示的接收操作，例如：S602等，和/或用于本文所描述的技术的其它过程。
发送单元102用于支持该通信装置10执行上述图6～图8中任一附图所示的发送操作，例如：S603等，和/或用于本文所描述的技术的其它过程。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
当然，本申请实施例提供的通信装置10包括但不限于上述模块，例如通信装置10还可以包括存储单元103。
存储单元103可以用于存储该通信装置10的程序代码。
本申请提供的通信装置10的实体框图可以参考上述图5。上述处理单元100可以是图5中的处理器51，上述接收单元101和发送单元102可以是图5中的通信接口52，存储单元103可以是图5中的存储器54。
本申请另一实施例还提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当指令在通信装置10上运行时，该通信装置10执行如图6～图8中任一附图所示的实施例的通信方法中第二网络的核心网设备的步骤。
在本申请的另一实施例中，还提供一种计算机程序产品，该计算机程序产品包括计算机执行指令，该计算机执行指令存储在计算机可读存储介质中；通信装置10的处理器可以从计算机可读存储介质读取该计算机执行指令，处理器执行该计算机执行指令使得通信装置10执行如图6～图8中任一附图所示的实施例的通信方法中第二网络的核心网设备的步骤。
本申请实施例提供一种通信装置11，该通信装置11可以为接入网设备，也可以为接入网设备中的部分装置，例如接入网设备中的芯片系统。可选的，该芯片系统，用于支持接入网设备实现上述方法实施例中所涉及的功能，例如，接收，发送，或处理上述方法中所涉及的数据和/或信息。该芯片系统包括芯片，也可以包括其他分立器 件或电路结构。
该通信装置11用于执行图6～图8中任一附图所示方法中第二网络的接入网设备所执行的步骤。本申请实施例提供的通信装置11可以包括相应步骤所对应的模块。
本申请实施例可以根据上述方法示例对通信装置11进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。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。
在采用对应各个功能划分各个功能模块的情况下，图11示出了本实施例中通信装置11的一种可能的结构示意图。如图11所示，通信装置11包括处理单元110、接收单元111和发送单元112。
处理单元110用于支持该通信装置11完成与终端的通信连接等，和/或用于本文所描述的技术的其它过程。
接收单元111用于支持该通信装置11执行上述图6～图8中任一附图所示的接收操作，例如：S603、S605、S802等，和/或用于本文所描述的技术的其它过程。
发送单元112用于支持该通信装置11执行上述图6～图8中任一附图所示的发送操作，例如：S604、S701等，和/或用于本文所描述的技术的其它过程。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
当然，本申请实施例提供的通信装置11包括但不限于上述模块，例如通信装置11还可以包括存储单元113。
存储单元113可以用于存储该通信装置11的程序代码。
本申请提供的通信装置11的实体框图可以参考上述图5。上述处理单元110可以是图5中的处理器51，上述接收单元111和发送单元112可以是图5中的通信接口52，存储单元113可以是图5中的存储器54。
本申请另一实施例还提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当指令在通信装置11上运行时，该通信装置11执行如图6～图8中任一附图所示的实施例的通信方法中第二网络的接入网设备的步骤。
在本申请的另一实施例中，还提供一种计算机程序产品，该计算机程序产品包括计算机执行指令，该计算机执行指令存储在计算机可读存储介质中；通信装置11的处理器可以从计算机可读存储介质读取该计算机执行指令，处理器执行该计算机执行指令使得通信装置11执行如图6～图8中任一附图所示的实施例的通信方法中第二网络的接入网设备的步骤。
在上述实施例中，可以全部或部分的通过软件，硬件，固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式出现。计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例的流程或功能。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。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， 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)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、服务器或数据中心传输。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括一个或多个可用介质集成的服务器、数据中心等数据第一接入网设备。该可用介质可以是磁性介质，(例如，软盘，硬盘、磁带)、或者半导体介质(例如固态硬盘solid state disk(SSD))等。
通过以上的实施方式的描述，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，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，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装置，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一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个可读取存储介质中。基于这样的理解，本申请实施例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个设备(可以是单片机，芯片等)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。
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，任何在本申请揭露的技术范围内的变化或替换，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 (37)

  1. 一种通信方法，其特征在于，包括：
    终端去使能接入第一网络的能力；
    所述终端接收来自第二网络的接入网设备的无线能力获取消息，所述无线能力获取消息用于请求获取所述终端的无线能力；
    所述终端向所述第二网络的接入网设备发送第一通知消息，所述第一通知消息用于指示所述终端不支持所述第一网络的接入。
  2. 根据权利要求1所述的通信方法，其特征在于，所述通信方法还包括：
    所述终端向所述第二网络的核心网设备发送第一信息，所述第一信息用于指示所述终端的无线能力发生变化。
  3. 根据权利要求1或2所述的通信方法，其特征在于，所述通信方法还包括：
    所述终端使能接入所述第一网络的能力；
    所述终端向所述第二网络的接入网设备发送第二通知消息，所述第二通知消息用于指示所述终端支持所述第一网络的接入。
  4. 根据权利要求1-3中任意一项所述的通信方法，其特征在于，
    所述第一通知消息不包括第一无线能力信息，所述第一无线能力信息包括用于表示所述终端接入所述第一网络的空口能力的信息、用于表示所述终端从所述第二网络切换至所述第一网络的能力的信息、用于表示所述终端从所述第二网络重定向至所述第一网络的能力的信息、或者用于表示所述终端以双连接的方式接入到所述第一网络的能力的信息中的至少一种。
  5. 根据权利要求4所述的通信方法，其特征在于，
    若所述第一网络为第五代通信技术5G网络，所述终端接入所述第一网络的空口能力包括所述终端支持通过演进通用陆地无线接入E-UTRA接入5G核心网的能力，以及所述终端支持通过新空口NR接入5G核心网的能力。
  6. 一种通信方法，其特征在于，包括：
    第二网络的核心网设备接收来自终端的非接入NAS能力信息，所述NAS能力信息用于指示所述终端已经去使能接入第一网络的能力；
    所述第二网络的核心网设备向所述第二网络的接入网设备发送指示信息，所述指示信息用于指示获取所述终端的无线能力，或者，用于指示所述第二网络的接入网设备不能将所述终端接入到所述第一网络。
  7. 根据权利要求6所述的通信方法，其特征在于，所述第二网络的核心网设备向所述第二网络的接入网设备发送指示信息之前，所述通信方法还包括：
    所述第二网络的核心网设备接收来自所述终端的第一信息，所述第一信息用于指示所述终端的无线能力发生变化；
    所述第二网络的核心网设备根据所述第一信息，删除第一无线能力信息和第二无线能力信息，所述第一无线能力信息用于表示所述终端支持所述第一网络的接入，所述第二无线能力信息用于表示所述终端支持所述第二网络的接入。
  8. 根据权利要求7所述的通信方法，其特征在于，
    所述第一无线能力信息包括用于表示所述终端接入所述第一网络的空口能力的信 息、用于表示所述终端从所述第二网络切换至所述第一网络的能力的信息、用于表示所述终端从所述第二网络重定向至所述第一网络的能力的信息、或者用于表示所述终端以双连接的方式接入到所述第一网络的能力的信息中的至少一种；
    所述第二无线能力信息包括用于表示所述终端接入所述第二网络的空口能力的信息、用于表示所述终端从所述第一网络切换至所述第二网络的能力的信息、用于表示所述终端从所述第一网络重定向至所述第二网络的能力的信息、或者用于表示所述终端以双连接的方式接入到所述第二网络的能力的信息中的至少一种。
  9. 根据权利要求8所述的通信方法，其特征在于，
    若所述第一网络为第五代通信技术5G网络，所述终端支持通过演进通用陆地无线接入E-UTRA接入5G核心网的能力，以及所述终端支持通过新空口NR接入5G核心网的能力；
    若所述第二网络为第五代通信技术5G网络，所述终端支持通过演进通用陆地无线接入E-UTRA接入5G核心网的能力，以及所述终端支持通过新空口NR接入5G核心网的能力。
  10. 一种通信方法，其特征在于，包括：
    第二网络的接入网设备向终端发送无线能力获取消息，所述无线能力获取消息用于请求获取所述终端的无线能力；
    所述第二网络的接入网设备接收来自所述终端的第一通知消息，所述第一通知消息用于指示所述终端不支持第一网络的接入。
  11. 根据权利要求10所述的通信方法，其特征在于，所述通信方法还包括：
    所述第二网络的接入网设备向目标设备发送切换指示信息，所述切换指示信息用于指示所述终端不支持所述第一网络的接入。
  12. 根据权利要求10或11所述的通信方法，其特征在于，所述第二网络的接入网设备向终端发送无线能力获取消息之前，所述通信方法还包括：
    所述第二网络的接入网设备建立与所述终端的通信连接；
    所述第二网络的接入网设备接收来自所述第二网络的核心网设备的指示信息，所述指示信息用于指示获取所述终端的无线能力，或者，用于指示所述第二网络的接入网设备不能将所述终端接入到所述第一网络。
  13. 根据权利要求10-12中任意一项所述的通信方法，其特征在于，所述通信方法还包括：
    所述第二网络的接入网设备接收来自所述终端的第二通知消息，所述第二通知消息用于指示所述终端支持所述第一网络的接入。
  14. 根据权利要求10-13中任意一项所述的通信方法，其特征在于，
    所述第一通知消息不包括第一无线能力信息，所述第一无线能力信息包括用于表示所述终端接入所述第一网络的空口能力的信息、用于表示所述终端从所述第二网络切换至所述第一网络的能力的信息、用于表示所述终端从所述第二网络重定向至所述第一网络的能力的信息、或者用于表示所述终端以双连接的方式接入到所述第一网络的能力的信息中的至少一种。
  15. 根据权利要求14所述的通信方法，其特征在于，
    若所述第一网络为第五代通信技术5G网络，所述终端接入所述第一网络的空口能力包括所述终端支持通过演进通用陆地无线接入E-UTRA接入5G核心网的能力，以及所述终端支持通过新空口NR接入5G核心网的能力。
  16. 一种通信装置，其特征在于，所述通信装置包括处理器，所述处理器与存储器耦合，读取并执行所述存储器中的指令，以实现：
    去使能接入第一网络的能力；
    接收来自第二网络的接入网设备的无线能力获取消息，所述无线能力获取消息用于请求获取所述通信装置的无线能力；
    向所述第二网络的接入网设备发送第一通知消息，所述第一通知消息用于指示所述通信装置不支持所述第一网络的接入。
  17. 根据权利要求16所述的通信装置，其特征在于，
    所述处理器，还用于向所述第二网络的核心网设备发送第一信息，所述第一信息用于指示所述通信装置的无线能力发生变化。
  18. 根据权利要求16或17所述的通信装置，其特征在于，所述处理器还用于：
    使能接入所述第一网络的能力；
    向所述第二网络的接入网设备发送第二通知消息，所述第二通知消息用于指示所述通信装置支持所述第一网络的接入。
  19. 根据权利要求16-18中任意一项所述的通信装置，其特征在于，
    所述第一通知消息不包括第一无线能力信息，所述第一无线能力信息包括用于表示所述通信装置接入所述第一网络的空口能力的信息、用于表示所述通信装置从所述第二网络切换至所述第一网络的能力的信息、用于表示所述通信装置从所述第二网络重定向至所述第一网络的能力的信息、或者用于表示所述通信装置以双连接的方式接入到所述第一网络的能力的信息中的至少一种。
  20. 根据权利要求19所述的通信装置，其特征在于，
    若所述第一网络为第五代通信技术5G网络，所述通信装置接入所述第一网络的空口能力包括所述通信装置支持通过演进通用陆地无线接入E-UTRA接入5G核心网的能力，以及所述通信装置支持通过新空口NR接入5G核心网的能力。
  21. 一种通信装置，其特征在于，所述通信装置包括处理器，所述处理器用于与存储器耦合，读取并执行所述存储器中的指令，以实现：
    接收来自终端的非接入NAS能力信息，所述NAS能力信息用于指示所述终端已经去使能接入第一网络的能力；
    向第二网络的接入网设备发送指示信息，所述指示信息用于指示获取所述终端的无线能力，或者，用于指示所述第二网络的接入网设备不能将所述终端接入到所述第一网络。
  22. 根据权利要求21所述的通信装置，其特征在于，所述向第二网络的接入网设备发送指示信息之前，所述处理器还用于：
    接收来自所述终端的第一信息，所述第一信息用于指示所述终端的无线能力发生变化；
    根据所述第一信息，删除第一无线能力信息和第二无线能力信息，所述第一无线 能力信息用于表示所述终端支持所述第一网络的接入，所述第二无线能力信息用于表示所述终端支持所述第二网络的接入。
  23. 根据权利要求22所述的通信装置，其特征在于，
    所述第一无线能力信息包括用于表示所述终端接入所述第一网络的空口能力的信息、用于表示所述终端从所述第二网络切换至所述第一网络的能力的信息、用于表示所述终端从所述第二网络重定向至所述第一网络的能力的信息、或者用于表示所述终端以双连接的方式接入到所述第一网络的能力的信息中的至少一种；
    所述第二无线能力信息包括用于表示所述终端接入所述第二网络的空口能力的信息、用于表示所述终端从所述第一网络切换至所述第二网络的能力的信息、用于表示所述终端从所述第一网络重定向至所述第二网络的能力的信息、或者用于表示所述终端以双连接的方式接入到所述第二网络的能力的信息中的至少一种。
  24. 根据权利要求23所述的通信装置，其特征在于，
    若所述第一网络为第五代通信技术5G网络，所述终端接入所述第一网络的空口能力包括所述终端支持通过演进通用陆地无线接入E-UTRA接入5G核心网的能力，以及所述终端支持通过新空口NR接入5G核心网的能力；
    若所述第二网络为第五代通信技术5G网络，所述终端接入所述第二网络的空口能力包括所述终端支持通过演进通用陆地无线接入E-UTRA接入5G核心网的能力，以及所述终端支持通过新空口NR接入5G核心网的能力。
  25. 一种通信装置，其特征在于，所述通信装置包括处理器，所述处理器用于与存储器耦合，读取并执行所述存储器中的指令，以实现：
    向终端发送无线能力获取消息，所述无线能力获取消息用于请求获取所述终端的无线能力；
    接收来自所述终端的第一通知消息，所述第一通知消息用于指示所述终端不支持第一网络的接入。
  26. 根据权利要求25所述的通信装置，其特征在于，
    所述处理器，还用于向目标设备发送切换指示信息，所述切换指示信息用于指示所述终端不支持所述第一网络的接入。
  27. 根据权利要求25或26所述的通信装置，其特征在于，所述向终端发送无线能力获取消息之前，所述处理器还用于：
    建立与所述终端的通信连接；
    接收来自第二网络的核心网设备的指示信息，所述指示信息用于指示获取所述终端的无线能力，或者，用于指示所述第二网络的接入网设备不能将所述终端接入到所述第一网络。
  28. 根据权利要求25-27中任意一项所述的通信装置，其特征在于，
    所述处理器，还用于接收来自所述终端的第二通知消息，所述第二通知消息用于指示所述终端支持所述第一网络的接入。
  29. 根据权利要求25-28中任意一项所述的通信装置，其特征在于，
    所述第一通知消息不包括第一无线能力信息，所述第一无线能力信息包括用于表示所述终端接入所述第一网络的空口能力的信息、用于表示所述终端从第二网络切换 至所述第一网络的能力的信息、用于表示所述终端从所述第二网络重定向至所述第一网络的能力的信息、或者用于表示所述终端以双连接的方式接入到所述第一网络的能力的信息中的至少一种。
  30. 根据权利要求29所述的通信装置，其特征在于，
    若所述第一网络为第五代通信技术5G网络，所述终端接入所述第一网络的空口能力包括所述终端支持通过演进通用陆地无线接入E-UTRA接入5G核心网的能力，以及所述终端支持通过新空口NR接入5G核心网的能力。
  31. 一种通信系统，其特征在于，所述通信系统包括如权利要求16-20任一项所述的装置、权利要求21-24任一项所述的装置和权利要求25-30任一项所述的装置。
  32. 一种计算机可读存储介质，其特征在于，当所述存储介质中的指令由电子设备的处理器执行时，使得所述电子设备能够执行如权利要求1至5中任一项所述的通信方法。
  33. 一种计算机可读存储介质，其特征在于，当所述存储介质中的指令由电子设备的处理器执行时，使得所述电子设备能够执行如权利要求6至9中任一项所述的通信方法。
  34. 一种计算机可读存储介质，其特征在于，当所述存储介质中的指令由电子设备的处理器执行时，使得所述电子设备能够执行如权利要求10至15中任一项所述的通信方法。
  35. 一种计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如权利要求1至5中任一项所述的通信方法。
  36. 一种计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如权利要求6至9中任一项所述的通信方法。
  37. 一种计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如权利要求10至15中任一项所述的通信方法。
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