WO2022143657A1 - 网络选择方法、装置、设备及存储介质 - Google Patents

网络选择方法、装置、设备及存储介质 Download PDF

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Publication number
WO2022143657A1
WO2022143657A1 PCT/CN2021/142061 CN2021142061W WO2022143657A1 WO 2022143657 A1 WO2022143657 A1 WO 2022143657A1 CN 2021142061 W CN2021142061 W CN 2021142061W WO 2022143657 A1 WO2022143657 A1 WO 2022143657A1
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WIPO (PCT)
Prior art keywords
network
information
terminal
selection method
network selection
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PCT/CN2021/142061
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English (en)
French (fr)
Inventor
张鹏飞
韩鲁峰
康艳超
刘选兵
Original Assignee
维沃移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to KR1020237025508A priority Critical patent/KR20230122672A/ko
Priority to JP2023537112A priority patent/JP2023554088A/ja
Priority to EP21914391.4A priority patent/EP4274296A1/en
Publication of WO2022143657A1 publication Critical patent/WO2022143657A1/zh
Priority to US18/340,163 priority patent/US20230337128A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • 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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]

Definitions

  • the present application belongs to the field of communication technologies, and in particular relates to a network selection method, apparatus, device and storage medium.
  • the terminal can receive Disaster Condition (DC) information, indicating that when the first network fails, the second network supports the terminal to provide services, so that the DC information can be used based on the DC information. Make a network selection.
  • DC Disaster Condition
  • DC information can be broadcast through the SIB1 in the Master Information Block (MasterInformationBlock, MIB) or the System Information Block (SystemInformationBlocks, SIB), but more is delivered through other SIBs, but since the network will not actively deliver other SIB information, Therefore, the terminal will not be able to receive other SIB information of the second network to obtain the DC information, but will enter the restricted service state and perform emergency registration.
  • MasterInformationBlock MIB
  • SystemInformationBlocks SystemInformationBlocks
  • the purpose of the embodiments of the present application is to provide a network selection method, apparatus, device, and storage medium, which can solve the problem that the terminal cannot obtain DC information and thus cannot perform network selection.
  • a network selection method applied to a terminal, and the method includes:
  • the first network of the terminal fails, obtain the disaster DC information from the target network;
  • the target network includes: a first network and/or a second network
  • the first network is a network that does not exist in the list of prohibited networks of the terminal;
  • the second network is a network existing in the terminal's prohibited network list.
  • a network selection method applied to the first network, and the method includes:
  • the DC information is used by the terminal to perform network selection in the case of a first network failure
  • the first network is a network that does not exist in the terminal's list of prohibited networks.
  • a network selection method applied to the second network, the method includes:
  • the DC information is used by the terminal to perform network selection in the case of a first network failure
  • the second network is a network existing in the terminal's prohibited network list.
  • a network selection apparatus applied to a terminal, the apparatus includes:
  • an acquisition module configured to acquire the disaster DC information from the target network when the first network of the terminal fails
  • a selection module for performing network selection based on the DC information
  • the target network includes: a first network and/or a second network
  • the first network is a network that does not exist in the list of prohibited networks of the terminal;
  • the second network is a network existing in the terminal's prohibited network list.
  • a network selection apparatus applied to the first network, the apparatus includes:
  • a first sending module configured to send DC information to the terminal when the first network of the terminal fails
  • the DC information is used by the terminal to perform network selection in the case of a first network failure
  • the first network is a network that does not exist in the terminal's list of prohibited networks.
  • a network selection apparatus applied to a second network, the apparatus comprising:
  • a second sending module configured to send DC information to the terminal when the first network of the terminal fails
  • the DC information is used by the terminal to perform network selection in the case of a first network failure
  • the second network is a network existing in the terminal's prohibited network list.
  • a terminal including a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the processor to achieve the following: Steps of the network selection method proposed in the first aspect.
  • a first network device comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the processor
  • the steps of the network selection method proposed in the second aspect When implementing the steps of the network selection method proposed in the second aspect.
  • a second network device comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the processor
  • the steps of the network selection method proposed in the third aspect When implementing the steps of the network selection method proposed in the third aspect.
  • a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by the processor, the steps of the network selection method proposed in the first aspect are implemented, Or implement the steps of the network selection method as proposed in the second aspect, or implement the steps of the network selection method as proposed in the third aspect.
  • a chip in an eleventh aspect, includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the network as proposed in the first aspect.
  • a twelfth aspect provides a computer program product, the computer program product being stored in a non-transitory storage medium, the computer program product being executed by at least one processor to implement the network selection as proposed in the first aspect
  • a thirteenth aspect provides a communication device configured to perform the steps of the network selection method as proposed in the first aspect, or configured to perform the steps of the network selection method as proposed in the second aspect, or configured to perform the steps of the network selection method as proposed in the second aspect.
  • the steps of the network selection method proposed in the third aspect are provided.
  • the terminal when the first network of the terminal is faulty, the terminal can obtain the DC information from the first network or the second network whose communication connection in the network list is disabled, so as to ensure that the terminal can obtain the DC information, and perform Network selection improves the success rate of network access.
  • FIG. 1 is a block diagram of a wireless communication system provided by an embodiment of the present application.
  • FIG. 2 is one of the schematic flowcharts of the network selection method provided by the embodiment of the present application.
  • FIG. 3 is a second schematic flowchart of a network selection method provided by an embodiment of the present application.
  • FIG. 4 is a third schematic flowchart of a network selection method provided by an embodiment of the present application.
  • FIG. 5 is a fourth schematic flowchart of a network selection method provided by an embodiment of the present application.
  • FIG. 6 is a fifth schematic flowchart of a network selection method provided by an embodiment of the present application.
  • FIG. 7 is a sixth schematic flowchart of a network selection method provided by an embodiment of the present application.
  • FIG. 8 is one of the schematic structural diagrams of a network selection apparatus provided by an embodiment of the present application.
  • FIG. 9 is a second schematic structural diagram of a network selection apparatus provided by an embodiment of the present application.
  • FIG. 10 is a third schematic structural diagram of a network selection apparatus provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a hardware structure of a terminal provided by an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a hardware structure of a first network device provided by an embodiment of the present application.
  • FIG. 14 is a schematic diagram of a hardware structure of a second network device provided by an embodiment of the present application.
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and "first”, “second” distinguishes Usually it is a class, and the number of objects is not limited.
  • the first object may be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
  • NR New Radio
  • NR terminology is used in most of the following description, although these techniques are also applicable to applications other than NR system applications, such as 6th generation ( 6th Generation, 6G) communication system.
  • FIG. 1 is a block diagram of a wireless communication system provided by an embodiment of the present application.
  • the wireless communication system includes a terminal 11 and a network-side device 12 .
  • the terminal 11 may also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital computer Assistant (Personal Digital Assistant, PDA), PDA, Netbook, Ultra-mobile Personal Computer (UMPC), Mobile Internet Device (Mobile Internet Device, MID), Wearable Device (Wearable Device) or vehicle terminal (Vehicle User Equipment, VUE), pedestrian terminal (Pedestrian User Equipment, PUE) and other terminal-side devices, wearable devices include: bracelets, headphones, glasses, etc.
  • the network side device 12 may be a base station or a core network, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a basic service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node, Send Transmitting Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms.
  • the base station in the NR system is taken as an example, but the specific type of the base station is not limited.
  • FIG. 2 is one of the schematic flowcharts of the network selection method provided by the embodiment of the present application. The method is applied to a terminal. As shown in FIG. 2 , the method includes the following steps:
  • Step 200 in the case that the first network of the terminal is faulty, obtain the disaster situation DC information from the target network;
  • Step 210 based on the DC information, perform network selection
  • the target network includes: a first network and/or a second network
  • the first network is a network that does not exist in the list of prohibited networks of the terminal;
  • the second network is a network existing in the terminal's prohibited network list.
  • the permitted public land mobile network (Public Land Mobile Network, PLMN) is not in the Subscriber Identity Module (SIM)/Universal Subscriber Identity Module (Universal) In the "Forbidden PLMN” list in the Subscriber Identity Module, USIM), where the list can be expanded in the mobile equipment (Mobile equipment, ME) memory.
  • the allowed PLMNs are those not in the "Forbidden PLMN” list in the SIM/USIM or "For General Packet Radio Service (GPRS)" not in the ME Service's Prohibited PLMNs" list.
  • GPRS General Packet Radio Service
  • this PLMN can be regarded as being allowed to register with the UE, and the disaster is applicable condition. Therefore, when the home network, ie, the first network, fails, the UE can select other networks to provide services for it, such as emergency services, data services, voice services, and video services.
  • the failure of the first network may refer to a failure or disaster of a related device of the first network, for example, a failure of a core network device, which makes it impossible to provide services for the UE.
  • the disaster situation, disaster, and disaster of the first network may all refer to a situation in which the first network fails.
  • the first network is a network that is not in the "Forbidden PLMN" list (list) of the UE, and may be the home network of the UE, and may also provide DC information for the UE;
  • the second network is an available (available) network that exists in the "Forbidden PLMN" list of the UE, and can be used to provide DC information for the UE.
  • the second network may be a network existing in a list of prohibited networks of the terminal, and the terminal is within the coverage of the second network, so as to ensure that the terminal can receive information sent by the second network.
  • the disaster condition (Disaster Condition, DC) information may include an indication for notifying the UE that a disaster occurs in the first network, and/or an indication that the second network or other networks can provide services for the UE of the first network under disaster conditions and other information.
  • the mobile terminal Mobile Station, MS
  • MS Mobile Station, MS
  • SNPN Stand-alone Non-Public Network
  • LR Location Registration
  • MSs operating in NB-S1 mode will never attempt to make emergency calls or access Restricted Local Operator Services (RLOS).
  • RLOS Restricted Local Operator Services
  • MSs operating in N1 mode never attempt to access RLOS.
  • the UE may receive DC information to indicate that when the first network fails, the second network or other networks support the home network as the first network.
  • a UE of a network provides services.
  • the DC information can be broadcast through MIB, SIB1, or sent through other SIBs; because Minimization of Service Interruption (MINT) is an extreme case, in order to save resources, it is more likely to be sent through other SIBs.
  • the UE will not read other SIB information of the second network to obtain DC information, and then There is no way to trigger the network selection process in a disaster situation, but instead enters a restricted service state for emergency registration.
  • the terminal in the case of a failure of the first network of the terminal, can obtain the disaster DC information from the target network to ensure that the terminal can receive the DC information, and then the terminal can receive the DC information based on the DC information. Go through the network selection process.
  • the DC information can be obtained.
  • the UE may obtain the DC information from the first network, for example, when a disaster occurs in the first network, the first network may deliver the DC information to the UE;
  • the UE may obtain DC information from the first network, for example, when a disaster occurs on the first network, the first network may broadcast the DC information;
  • the UE may obtain DC information from the second network, for example, when a disaster occurs on the first network, the second network may broadcast the DC information
  • the UE may perform network access control, that is, network selection, based on the DC information.
  • the first network may be, but is not limited to, a New Radio (New Radio, NR) or a PLMN in Long Term Evolution (Long Term Evolution, LTE), which may be referred to as the first PLMN.
  • New Radio NR
  • Long Term Evolution Long Term Evolution
  • the second network may be, but not limited to, a PLMN in NR or LTE, and may be referred to as a second PLMN.
  • the terminal when the first network of the terminal is faulty, the terminal can obtain the DC information from the first network or the second network whose communication connection in the network list is disabled, so as to ensure that the terminal can obtain the DC information, and perform Network selection improves the success rate of network access.
  • obtaining the DC information from the target network includes:
  • the DC information is obtained from the target network.
  • the AS can read the PLMN identifier (PLMN ID) from the SIB1 and send it to the non-access stratum (Non-Access Stratum, NAS). If there are Allowable PLMN(s), select an Allowable PLMN from it, and perform cell selection and other processes. If the PLMN ID(s) received by the NAS are all in the "forbidden PLMN" list, you can further Determine whether the UE supports the MINT feature.
  • PLMN ID PLMN identifier
  • NAS non-access stratum
  • the UE enters a limited service state
  • a PLMN can be selected from the PLMN ID(s) located in the forbidden list as the second network for acquiring the DC information.
  • the obtaining the DC information from the target network includes:
  • the UE may obtain the DC information from the first network, for example, when a disaster occurs in the first network, the first network may deliver the DC information to the UE;
  • the base station side can still deliver or broadcast the system information, and can deliver the DC information to the UE.
  • the DC information may be: in a disaster situation, a network list PLMN list (PLMN list) of a third network that can provide data services for the first network, and/or an indication that a disaster occurs in the first network.
  • PLMN list PLMN list
  • the DC information is sent through at least one of the following messages: a NAS message; and an AS message.
  • the first network when it sends the DC information to the UE, it may send the DC information through, but is not limited to, at least one of the following messages: a NAS message; an AS message, and the like.
  • the obtaining the DC information from the target network includes:
  • the UE may obtain DC information from the first network, for example, when a disaster occurs on the first network, the first network may broadcast the DC information;
  • the UE may acquire the DC information from the second network, for example, when a disaster occurs in the first network, the second network may broadcast the DC information.
  • the UE may obtain the DC information from the first network or the second network.
  • both the first network and the second network may broadcast the DC information; the UE may receive the DC information broadcast by one of the networks. information, or receive the DC information broadcast by two networks, and choose one for use, for example, you can choose one for use, or select the DC information received previously for use.
  • a PLMN can be selected as the second network from the PLMN ID(s) located in the forbidden list;
  • all PLMNs that can serve as the second network can broadcast the DC information, so as to ensure that the UE can select the network that is broadcasting the DC information as the second network.
  • the base station side can still deliver or broadcast system information, and can broadcast DC information, and the UE can receive the DC information broadcast by the first network.
  • the DC information is sent through at least one of the following messages: MIB; SIB1; and other SIB information.
  • the DC information may be broadcast through, but not limited to, at least one of the following messages:
  • MIB MIB, SIB1 or other SIB information.
  • the obtaining the DC information from the target network includes:
  • the UE may request DC information from the second network
  • the DC information may include information such as whether the second network supports providing data services for UEs in a disaster PLMN, and/or the second network provides information such as a PLNN list that supports providing services for UEs in the disaster PLMN.
  • the second network may return DC information after receiving the request from the UE;
  • the UE may perform access control according to the forbidden PLMN in the DC information fed back by the second network.
  • the UE may decide whether to access the second network to obtain services according to the information fed back by the second network. Access the second network to obtain services;
  • the UE may determine, according to the information fed back by the second network, that is, the DC information, that it can access and obtain the serving third network, and complete the network selection process.
  • the request information is sent through at least one of the following messages: a NAS message; and an AS message.
  • the request may be made through a NAS message or an AS message.
  • the DC information includes:
  • the third network is a network that supports providing the terminal with the first service.
  • the DC information may include a list of third networks that support providing the first service for the terminal;
  • the list of third networks may include all or part of third networks that support providing the first service for the terminal.
  • the list of third networks may include third networks provided by the first network and/or the second network for the UE to support providing the first service for the terminal.
  • the third network may be, but is not limited to, a PLMN in NR or LTE, and may be referred to as a third PLMN.
  • the DC information further includes:
  • the DC information may further include first information used to indicate whether the second network supports providing the first service for the terminal, so as to inform the UE whether it can obtain the first service from the second network. Serve.
  • the first service includes any one of the following or a combination thereof:
  • the first service may include but is not limited to any one of the following or a combination thereof: emergency service; data service; voice service; video service; to ensure normal service processing of the UE.
  • the terminal when the first network of the terminal is faulty, the terminal can obtain the DC information from the first network or the second network whose communication connection in the network list is disabled, so as to ensure that the terminal can obtain the DC information, and perform Network selection improves the success rate of network access.
  • FIG. 3 is a second schematic flowchart of a network selection method provided by an embodiment of the present application. The method is applied to the first network. As shown in FIG. 3 , the method includes the following steps:
  • Step 300 in the case that the first network of the terminal is faulty, send DC information to the terminal;
  • the DC information is used by the terminal to perform network selection in the case of a first network failure
  • the first network is a network that does not exist in the terminal's list of prohibited networks.
  • the first network is a network that is not in the "Forbidden PLMN" list ("Forbidden PLMN" list) of the UE, may be the home network of the UE, and may also provide DC information for the UE; ) network (Public Land Mobile Network, PLMN);
  • PLMN Public Land Mobile Network
  • the disaster condition (Disaster Condition, DC) information may include an indication for notifying the UE that a disaster occurs in the first network, and/or an indication that the second network or other networks can provide services for the UE of the first network under disaster conditions and other information.
  • DC Disaster Condition
  • the second network is an available (available) network that exists in the "Forbidden PLMN" list of the UE, and can be used to provide DC information for the UE.
  • the UE may receive DC information to indicate that when the first network fails, the second network or other networks support the home network as the first network.
  • a UE of a network provides services.
  • the DC information can be broadcast through MIB, SIB1, or sent through other SIBs; because Minimization of Service Interruption (MINT) is an extreme case, in order to save resources, it is more likely to be sent through other SIBs.
  • the UE will not read other SIB information of the second network to obtain DC information, and then There is no way to trigger the network selection process in a disaster situation, but instead enters a restricted service state for emergency registration.
  • the first network in the case of a failure of the first network of the terminal, can send the disaster DC information to the terminal to ensure that the terminal can receive the DC information, and based on the DC information for the network selection process.
  • the DC information can be obtained.
  • the first network may send the disaster DC information to the terminal, for example, when a disaster occurs on the first network, the first network may deliver the DC information to the UE;
  • the first network may send disaster DC information to the terminal, for example, when a disaster occurs on the first network, the first network may broadcast the DC information;
  • the UE may perform network access control, that is, network selection, based on the DC information.
  • the first network may be, but is not limited to, a PLMN in NR or LTE, which may be referred to as the first PLMN.
  • the second network may be, but not limited to, a PLMN in NR or LTE, and may be referred to as a second PLMN.
  • the first network when the first network of the terminal fails, the first network can actively send DC information to the terminal, ensuring that the terminal can obtain the DC information and perform network selection, thereby improving the success rate of network access.
  • the sending DC information to the terminal includes:
  • the DC information is broadcast and sent to the terminal.
  • the first network may send disaster DC information to the terminal, for example, when a disaster occurs on the first network, the first network may broadcast the DC information;
  • a PLMN can be selected as the second network from the PLMN ID(s) located in the forbidden list;
  • the base station side can still deliver or broadcast system information, and can broadcast DC information, and the UE can receive the DC information broadcast by the first network.
  • the DC information is sent through at least one of the following messages: a NAS message; and an AS message.
  • the DC information may be broadcast through, but not limited to, at least one of the following messages:
  • MIB MIB, SIB1 or other SIB information.
  • the DC information includes:
  • the third network is a network that supports providing the first service for the terminal.
  • the DC information may include a list of third networks that support providing the first service for the terminal;
  • the list of third networks may include all or part of third networks that support providing the first service for the terminal.
  • the list of third networks may include third networks provided by the first network and/or the second network for the UE to support providing the first service for the terminal.
  • the third network may be, but is not limited to, a New Radio (New Radio, NR) or a PLMN in Long Term Evolution (Long Term Evolution, LTE), which may be referred to as a third PLMN.
  • New Radio NR
  • LTE Long Term Evolution
  • the first service includes any one of the following or a combination thereof:
  • the first service may include but is not limited to any one of the following or a combination thereof: emergency service; data service; voice service; video service; to ensure normal service processing of the UE.
  • the first network when the first network of the terminal fails, the first network can actively send the DC information to the terminal, ensuring that the terminal can obtain the DC information and perform network selection, thereby improving the success rate of network access.
  • FIG. 4 is a third schematic flowchart of a network selection method provided by an embodiment of the present application. The method is applied to a second network. As shown in FIG. 4 , the method includes the following steps:
  • Step 400 in the case that the first network of the terminal is faulty, send DC information to the terminal;
  • the DC information is used by the terminal to perform network selection in the case of a first network failure
  • the second network is a network existing in the terminal's prohibited network list.
  • the first network is a network that is not in the "Forbidden PLMN" list of the UE, can be the home network of the UE, and can also provide DC information for the UE; wherein, the Public Land Mobile (communication) network (Public Land Mobile Network, PLMN);
  • the Public Land Mobile (communication) network Public Land Mobile Network, PLMN
  • the second network is an available network that exists in the "Forbidden PLMN" list of the UE, and can be used to provide DC information for the UE.
  • the disaster condition (Disaster Condition, DC) information may include an indication for notifying the UE that a disaster occurs in the first network, and/or an indication that the second network or other networks can provide services for the UE of the first network under disaster conditions and other information.
  • DC Disaster Condition
  • the UE may receive DC information to indicate that when the first network fails, the second network or other networks support the home network as the first network.
  • a UE of a network provides services.
  • the DC information can be broadcast through MIB, SIB1, or sent through other SIBs; because Minimization of Service Interruption (MINT) is an extreme case, in order to save resources, it is more likely to be sent through other SIBs.
  • the UE will not read other SIB information of the second network to obtain DC information, and then There is no way to trigger the network selection process in a disaster situation, but instead enters a restricted service state for emergency registration.
  • the second network can send the disaster DC information to the terminal to ensure that the terminal can receive the DC information, and then the terminal can receive the DC information based on the DC information. information for the network selection process.
  • the DC information can be obtained.
  • the second network can send disaster DC information to the terminal, for example, when a disaster occurs on the first network, the second network can broadcast the DC information;
  • the UE may perform network access control, that is, network selection, based on the DC information.
  • the first network may be, but is not limited to, a PLMN in NR or LTE, which may be referred to as the first PLMN.
  • the second network may be, but not limited to, a PLMN in NR or LTE, and may be referred to as a second PLMN.
  • the second network of the communication connection in the disabled network list of the terminal can send the DC information to the terminal, so as to ensure that the terminal can obtain the DC information and perform network selection. , which improves the success rate of network access.
  • the sending DC information to the terminal includes:
  • the DC information is broadcast and sent to the terminal.
  • the second network may send disaster DC information to the terminal, for example, when a disaster occurs on the first network, the second network may broadcast the DC information.
  • a PLMN can be selected as the second network from the PLMN ID(s) located in the forbidden list;
  • all PLMNs that can serve as the second network can broadcast the DC information, so as to ensure that the UE can select the network that is broadcasting the DC information as the second network.
  • the DC information is sent through at least one of the following messages: MIB; SIB1; and other SIB information.
  • the DC information may be broadcast through, but not limited to, at least one of the following messages:
  • MIB MIB, SIB1 or other SIB information.
  • the sending DC information to the terminal includes:
  • the DC information is sent to the terminal.
  • the UE may request DC information from the second network
  • the DC information may include information such as whether the second network supports providing data services for UEs in a disaster PLMN, and/or the second network provides information such as a PLNN list that supports providing services for UEs in the disaster PLMN.
  • the second network may return DC information after receiving the request from the UE;
  • the UE may perform access control according to the forbidden PLMN in the DC information fed back by the second network.
  • the request information is sent through at least one of the following messages: a NAS message; and an AS message.
  • the request may be made through a NAS message or an AS message.
  • the DC information includes:
  • the third network is a network that supports providing the first service for the terminal.
  • the DC information may include a list of third networks that support providing the first service for the terminal;
  • the list of third networks may include all or part of third networks that support providing the first service for the terminal.
  • the list of third networks may include third networks provided by the first network and/or the second network for the UE to support providing the first service for the terminal.
  • the third network may be, but is not limited to, a PLMN in NR or LTE, and may be referred to as a third PLMN.
  • the DC information also includes:
  • the DC information may further include first information used to indicate whether the second network supports providing the first service for the terminal, so as to inform the UE whether the UE can directly access second network.
  • the first service includes any one of the following or a combination thereof:
  • the first service may include but is not limited to any one of the following or a combination thereof: emergency service; data service; voice service; video service; to ensure normal service processing of the UE.
  • the second network of the communication connection in the disabled network list of the terminal can send the DC information to the terminal, so as to ensure that the terminal can obtain the DC information and perform network selection. , which improves the success rate of network access.
  • FIG. 5 is a fourth schematic flowchart of a network selection method provided by an embodiment of the present application; as shown in FIG. 5 , the method includes the following steps:
  • Step 500 the UE searches the network and receives the system information of MIB and SIB1;
  • Step 510 the access layer (Access Stratum, AS) reads the PLMN ID from SIB1 and sends it to the NAS layer;
  • the access layer (Access Stratum, AS) reads the PLMN ID from SIB1 and sends it to the NAS layer;
  • the AS obtains relevant information such as the PLMN ID and measurement information, and obtains the PLMN ID and sends it to the NAS layer;
  • Step 520 the UE performs PLMN selection
  • the NAS can select the PLMN according to the received PLMN ID(s) and the stored PLMN list information, for example, forbidden list, etc.;
  • Step 530a If it is determined that there is an Allowable PLMN(s), an Allowable PLMN can be selected from it, and processes such as cell selection can be performed;
  • Step 530b If the PLMN ID(s) received by the NAS are all located in the forbidden list, that is, there is no Allowable PLMN, it can be judged whether the UE supports the MINT feature;
  • Step 540a If the UE does not support the MINT feature, the UE enters a limited service state;
  • Step 540b the UE selects the second network
  • a PLMN can be selected as the second network from the PLMN ID(s) located in the forbidden list;
  • Step 550 the UE requests DC information from the second network
  • the request information can be requested through a NAS message or an AS message;
  • the DC information may include information such as whether the second network provides data services for UEs in a disaster PLMN, and/or supports a PLMN list that provides services for UEs in the disaster PLMN.
  • Step 560 the UE obtains DC information from the second network
  • the second network may return the DC information according to the request of the UE;
  • Step 570 The UE performs network selection according to the DC information.
  • the UE can decide whether to access the second network to obtain services according to the DC information fed back by the second network. access the second network to obtain services;
  • the UE may determine a third network that can access and obtain services according to information fed back by the second network, that is, DC information, and complete the network selection process.
  • FIG. 6 is a fifth schematic flowchart of a network selection method provided by an embodiment of the present application; as shown in FIG. 6 , the method includes the following steps:
  • Step 600 the UE searches the network and receives the system information of MIB and SIB1;
  • Step 610 the access layer AS reads the PLMN ID from SIB1 and sends it to the NAS layer;
  • the AS obtains related information such as the PLMN ID and measurement information, and obtains the PLMN ID and sends it to the NAS layer;
  • Step 620 the UE performs PLMN selection
  • the NAS can select the PLMN according to the received PLMN ID(s) and the stored PLMN list information, for example, forbidden list, etc.;
  • Step 630a If it is determined that there is an Allowable PLMN(s), an Allowable PLMN can be selected from it, and processes such as cell selection can be performed;
  • Step 630b If the PLMN ID(s) received by the NAS are all located in the forbidden list, that is, there is no Allowable PLMN, it can be judged whether the UE supports the MINT feature;
  • Step 640a If the UE does not support the MINT feature, the UE enters a limited service state
  • Step 640b the UE selects the second network
  • a PLMN can be selected as the second network from the PLMN ID(s) located in the forbidden list;
  • Step 650 the UE reads the DC information broadcast by the second network
  • the second network broadcasts the DC information; the UE can read the DC information broadcast by the second network;
  • This information can be broadcast via MIB, SIB1 or other SIB information.
  • Step 660 The UE performs network selection according to the DC information.
  • the UE may perform access control of the forbidden PLMN according to the DC information broadcast by the second network.
  • the UE can decide whether to access the second network to obtain services according to the DC information fed back by the second network. access the second network to obtain services;
  • the UE may determine a third network that can access and obtain services according to information fed back by the second network, that is, DC information, and complete the network selection process.
  • FIG. 7 is a sixth schematic flowchart of a network selection method provided by an embodiment of the present application; as shown in FIG. 7 , the method includes the following steps:
  • Step 700 a disaster occurs in the first network
  • Step 710 The first network sends the DC information to the UE;
  • the DC information may be transmitted through but not limited to the following messages: NAS message, AS message, etc.;
  • Step 720 the UE performs PLMN selection
  • the UE performs normal PLMN selection
  • Step 730 The UE performs network selection according to the DC information
  • the PLMN selection is performed based on the received DC information.
  • the UE may determine the network list PLMN list of the third network that can access and obtain the service according to the DC information, and complete the network selection process based on the network list PLMN list of the third network.
  • the execution body may be a network selection device, or a control module in the network selection device for executing the network selection method.
  • the network selecting device provided by the embodiment of the present application is described by taking the network selecting device executing the network selecting method as an example.
  • the apparatus includes: an acquisition module 810 and a selection module 820; wherein:
  • the obtaining module 810 is configured to obtain the disaster DC information from the target network when the first network of the terminal fails;
  • the selection module 820 is configured to perform network selection based on the DC information
  • the target network includes: a first network and/or a second network
  • the first network is a network that does not exist in the list of prohibited networks of the terminal;
  • the second network is a network existing in the terminal's prohibited network list.
  • the network selection device may obtain the disaster DC information from the first network and/or the second network through the obtaining module 810 when the first network of the terminal is faulty; Network selection.
  • the terminal when the first network of the terminal is faulty, the terminal can obtain the DC information from the first network or the second network whose communication connection in the network list is disabled, so as to ensure that the terminal can obtain the DC information, and perform Network selection improves the success rate of network access.
  • the obtaining module is used for:
  • the DC information is obtained from the target network.
  • the obtaining module is configured to:
  • the DC information is sent through at least one of the following messages: a NAS message; and an AS message.
  • the obtaining module is configured to:
  • the DC information is sent through at least one of the following messages: MIB; SIB1; and other SIB information.
  • the obtaining module is configured to:
  • the request information is sent through at least one of the following messages: a NAS message; and an AS message.
  • the DC information includes:
  • the third network is a network that supports providing the first service for the terminal.
  • the DC information further includes:
  • the first service includes any one of the following or a combination thereof:
  • the network selection device in this embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal.
  • the device may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machine, or self-service machine, etc., which are not specifically limited in the embodiments of the present application.
  • the network selection device in this embodiment of the present application may be a device with an operating system.
  • the operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
  • the network selection apparatus provided in this embodiment of the present application can implement each process implemented by the method embodiments in FIG. 2 to FIG. 8 , and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • FIG. 9 is a second schematic structural diagram of a network selection apparatus provided by an embodiment of the present application, which is applied to a first network.
  • the apparatus includes: a first sending module 910, where:
  • the first sending module 910 is configured to send DC information to the terminal when the first network of the terminal fails;
  • the DC information is used by the terminal to perform network selection in the case of a first network failure
  • the first network is a network that does not exist in the terminal's list of prohibited networks.
  • the network selection apparatus may send the DC information to the terminal through the first sending module 910 when the first network of the terminal is faulty.
  • the first network when the first network of the terminal fails, the first network can actively send the DC information to the terminal, ensuring that the terminal can obtain the DC information and perform network selection, thereby improving the success rate of network access.
  • the first sending module is used for:
  • the DC information is broadcast and sent to the terminal.
  • the DC information is sent through at least one of the following messages: a NAS message; and an AS message.
  • the DC information includes:
  • the third network is a network that supports providing the first service for the terminal.
  • the first network when the first network of the terminal fails, the first network can actively send the DC information to the terminal, ensuring that the terminal can obtain the DC information and perform network selection, thereby improving the success rate of network access.
  • the network selection device in this embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal.
  • the device may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machine, or self-service machine, etc., which are not specifically limited in the embodiments of the present application.
  • the network selection device in this embodiment of the present application may be a device with an operating system.
  • the operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
  • the network selection apparatus provided in this embodiment of the present application can implement each process implemented by the method embodiments in FIG. 2 to FIG. 8 , and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • FIG. 10 is a third schematic structural diagram of a network selection apparatus provided by an embodiment of the present application, which is applied to a second network device.
  • the apparatus includes: a second sending module 1010, wherein:
  • the second sending module 1010 is configured to send DC information to the terminal when the first network of the terminal fails;
  • the DC information is used by the terminal to perform network selection in the case of a first network failure
  • the second network is a network existing in the terminal's prohibited network list.
  • the network selection apparatus may send the DC information to the terminal through the second sending module 1010 when the first network of the terminal is faulty.
  • the second network of the communication connection in the disabled network list of the terminal can send the DC information to the terminal, so as to ensure that the terminal can obtain the DC information and perform network selection. , which improves the success rate of network access.
  • the second sending module is used for:
  • the DC information is broadcast and sent to the terminal.
  • the DC information is sent through at least one of the following messages: MIB; SIB1; and other SIB information.
  • the second sending module is used for:
  • the DC information is sent to the terminal.
  • the request information is sent through at least one of the following messages: a NAS message; and an AS message.
  • the DC information includes:
  • the third network is a network that supports providing the first service for the terminal.
  • the DC information also includes:
  • the first service includes any one of the following or a combination thereof:
  • the second network of the communication connection in the disabled network list of the terminal can send the DC information to the terminal, so as to ensure that the terminal can obtain the DC information and perform network selection. , which improves the success rate of network access.
  • the network selection device in this embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal.
  • the device may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machine, or self-service machine, etc., which are not specifically limited in the embodiments of the present application.
  • the network selection device in this embodiment of the present application may be a device with an operating system.
  • the operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
  • the network selection apparatus provided in this embodiment of the present application can implement each process implemented by the method embodiments in FIG. 2 to FIG. 8 , and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • a communication device 1100 includes a processor 1101 and a memory 1102 , which are stored in the memory 1102 and can be stored in the processor 1101
  • the communication device 1100 is a terminal, when the program or instruction is executed by the processor 1101, each process of the foregoing network selection method embodiment can be implemented, and the same technical effect can be achieved.
  • the communication device 1100 is a network side device, when the program or instruction is executed by the processor 1101, each process of the foregoing network selection method embodiment can be achieved, and the same technical effect can be achieved. To avoid repetition, details are not described here.
  • FIG. 12 is a schematic diagram of a hardware structure of a terminal provided by an embodiment of the present application.
  • the terminal 1200 includes but is not limited to: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, and a processor 1210 and other components .
  • the terminal 1200 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 1210 through a power management system, so as to manage charging, discharging, and power consumption through the power management system management and other functions.
  • a power source such as a battery
  • the terminal structure shown in FIG. 12 does not constitute a limitation on the terminal, and the terminal may include more or less components than shown, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 1204 may include a graphics processor (Graphics Processing Unit, GPU) 12041 and a microphone 12042. Such as camera) to obtain still pictures or video image data for processing.
  • the display unit 1206 may include a display panel 12061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1207 includes a touch panel 12071 and other input devices 12072 .
  • the touch panel 12071 is also called a touch screen.
  • the touch panel 12071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 12072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which are not described herein again.
  • the radio frequency unit 1201 processes the information from the communication peer end after receiving the information; in addition, sends the information to be transmitted to the communication peer end.
  • the radio frequency unit 1201 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • Memory 1209 may be used to store software programs or instructions as well as various data.
  • the memory 1209 may mainly include a stored program or instruction area and a storage data area, wherein the stored program or instruction area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.) and the like.
  • the memory 1209 may include a high-speed random access memory, and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • PROM erasable programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory for example at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • the processor 1210 may include one or more processing units; optionally, the processor 1210 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly deal with wireless communications, such as baseband processors. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 1210.
  • the processor 1210 is used for:
  • the first network of the terminal fails, obtain the disaster DC information from the target network;
  • the target network includes: a first network and/or a second network
  • the first network is a network that does not exist in the list of prohibited networks of the terminal;
  • the second network is a network existing in the terminal's prohibited network list.
  • the terminal when the first network of the terminal is faulty, the terminal can obtain the DC information from the first network or the second network whose communication connection in the network list is disabled, so as to ensure that the terminal can obtain the DC information, and perform Network selection improves the success rate of network access.
  • the processor 1210 is configured to:
  • the DC information is obtained from the target network.
  • the processor 1210 is configured to:
  • the DC information is sent through at least one of the following messages: a NAS message; and an AS message.
  • the processor 1210 is configured to:
  • the DC information is sent through at least one of the following messages: MIB; SIB1; and other SIB information.
  • the processor 1210 is configured to:
  • the request information is sent through at least one of the following messages: a NAS message; and an AS message.
  • the DC information includes:
  • the third network is a network that supports providing the first service for the terminal.
  • the DC information further includes:
  • the first service includes any one of the following or a combination thereof:
  • the terminal when the first network of the terminal is faulty, the terminal can obtain the DC information from the first network or the second network whose communication connection in the network list is disabled, so as to ensure that the terminal can obtain the DC information, and perform Network selection improves the success rate of network access.
  • FIG. 13 is a schematic diagram of a hardware structure of a first network device provided by an embodiment of the present application.
  • the network side device 1300 includes: an antenna 1301 , a radio frequency device 1302 , and a baseband device 1303 .
  • the antenna 1301 is connected to the radio frequency device 1302 .
  • the radio frequency device 1302 receives information through the antenna 1301, and sends the received information to the baseband device 1303 for processing.
  • the baseband device 1303 processes the information to be sent and sends it to the radio frequency device 1302
  • the radio frequency device 1302 processes the received information and sends it out through the antenna 1301 .
  • the above-mentioned frequency band processing apparatus may be located in the baseband apparatus 1303 , and the method performed by the network side device in the above embodiments may be implemented in the baseband apparatus 1303 .
  • the baseband apparatus 1303 includes a processor 1304 and a memory 1305 .
  • the baseband device 1303 may include, for example, at least one baseband board on which a plurality of chips are arranged, as shown in FIG. 13 , one of the chips is, for example, the processor 1304 , which is connected to the memory 1305 to call a program in the memory 1305 to execute
  • the network devices shown in the above method embodiments operate.
  • the baseband device 1303 may further include a network interface 1306 for exchanging information with the radio frequency device 1302, and the interface is, for example, a common public radio interface (CPRI for short).
  • CPRI common public radio interface
  • the network-side device in this embodiment of the present application further includes: instructions or programs that are stored in the memory 1305 and run on the processor 1304, and the processor 1304 invokes the instructions or programs in the memory 1305 to execute the modules shown in FIG. 9 .
  • the processor 1304 is used for:
  • the DC information is used by the terminal to perform network selection in the case of a first network failure
  • the first network is a network that does not exist in the terminal's list of prohibited networks.
  • the first network when the first network of the terminal fails, the first network can actively send the DC information to the terminal, ensuring that the terminal can obtain the DC information and perform network selection, thereby improving the success rate of network access.
  • processor 1304 is used to:
  • the DC information is broadcast and sent to the terminal.
  • the DC information is sent through at least one of the following messages: a NAS message; and an AS message.
  • the DC information includes:
  • the third network is a network that supports providing the first service for the terminal.
  • the first service includes any one of the following or a combination thereof:
  • the first network when the first network of the terminal fails, the first network can actively send the DC information to the terminal, ensuring that the terminal can obtain the DC information and perform network selection, thereby improving the success rate of network access.
  • FIG. 14 is a schematic diagram of a hardware structure of a second network device provided by an embodiment of the present application.
  • the network-side device 1400 includes: an antenna 1401 , a radio frequency device 1402 , and a baseband device 1403 .
  • the antenna 1401 is connected to the radio frequency device 1402 .
  • the radio frequency device 1402 receives information through the antenna 1401, and sends the received information to the baseband device 1403 for processing.
  • the baseband device 1403 processes the information to be sent and sends it to the radio frequency device 1402, and the radio frequency device 1402 processes the received information and sends it out through the antenna 1401.
  • the above-mentioned frequency band processing apparatus may be located in the baseband apparatus 1403 , and the method performed by the network side device in the above embodiments may be implemented in the baseband apparatus 1403 .
  • the baseband apparatus 1403 includes a processor 1404 and a memory 1405 .
  • the baseband device 1403 may include, for example, at least one baseband board on which multiple chips are arranged, as shown in FIG. 14 , one of the chips is, for example, the processor 1404 , which is connected to the memory 1405 to call the program in the memory 1405 to execute
  • the network devices shown in the above method embodiments operate.
  • the baseband device 1403 may further include a network interface 1406 for exchanging information with the radio frequency device 1402, and the interface is, for example, a common public radio interface (CPRI for short).
  • CPRI common public radio interface
  • the network-side device in this embodiment of the present application further includes: instructions or programs that are stored in the memory 1405 and run on the processor 1404, and the processor 1404 invokes the instructions or programs in the memory 1405 to execute the modules shown in FIG. 10 .
  • the processor 1404 is used for:
  • the DC information is used by the terminal to perform network selection in the case of a first network failure
  • the second network is a network existing in the terminal's prohibited network list.
  • the second network of the communication connection in the disabled network list of the terminal can send the DC information to the terminal, so as to ensure that the terminal can obtain the DC information and perform network selection. , which improves the success rate of network access.
  • processor 1404 is used to:
  • the DC information is broadcast and sent to the terminal.
  • the DC information is sent through at least one of the following messages: MIB; SIB1; and other SIB information.
  • processor 1404 is used to:
  • the DC information is sent to the terminal.
  • the request information is sent through at least one of the following messages: a NAS message; and an AS message.
  • the DC information includes:
  • the third network is a network that supports providing the first service for the terminal.
  • the DC information also includes:
  • the first service includes any one of the following or a combination thereof:
  • the second network of the communication connection in the disabled network list of the terminal can send the DC information to the terminal, so as to ensure that the terminal can obtain the DC information and perform network selection. , which improves the success rate of network access.
  • the embodiments of the present application further provide a readable storage medium, the readable storage medium may be non-volatile or volatile, and a program or an instruction is stored on the readable storage medium, and the program or instruction is stored in the readable storage medium.
  • the processor executes, each process of the foregoing network selection method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.
  • the processor is the processor in the terminal described in the foregoing embodiment.
  • the readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
  • An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the network selection method embodiments described above.
  • the chip includes a processor and a communication interface
  • the communication interface is coupled to the processor
  • the processor is configured to run a program or an instruction to implement the network selection method embodiments described above.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
  • An embodiment of the present application further provides a computer program product, wherein the computer program product is stored in a non-transitory readable storage medium, and the computer program product is executed by at least one processor to implement the above network selection method
  • the computer program product is stored in a non-transitory readable storage medium, and the computer program product is executed by at least one processor to implement the above network selection method
  • the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation.
  • the technical solution of the present application can be embodied in the form of a software product in essence or in a part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of this application.
  • a storage medium such as ROM/RAM, magnetic disk, CD-ROM

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Abstract

本申请公开了一种网络选择方法、装置、设备及存储介质，属于通信技术领域。该方法包括：在终端的第一网络故障的情况下，从目标网络获取灾情DC信息；基于所述DC信息，进行网络选择；所述目标网络包括：第一网络和/或第二网络；所述第一网络是不存在于终端的禁用网络列表中的网络；所述第二网络是存在于终端的禁用网络列表中的网络。

Description

网络选择方法、装置、设备及存储介质
相关申请的交叉引用
本申请主张在2020年12月29日在中国提交的中国专利申请No.202011593449.5的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种网络选择方法、装置、设备及存储介质。
背景技术
当因为设备故障、灾害等原因导致第一网络不可用时，终端可以接收灾情(Disaster Condition，DC)信息，指示当第一网络发生故障时，第二网络支持该终端提供服务，从而可以基于DC信息进行网络选择。
DC信息可以通过主系统信息块(MasterInformationBlock，MIB)或系统信息块(SystemInformationBlocks，SIB)中的SIB1广播，但更多的是通过其他SIB下发，但由于网络不会主动下发其他SIB信息，因此终端将无法接收第二网络的其他SIB信息来获取DC信息，而是进入受限服务状态，进行紧急注册。
发明内容
本申请实施例的目的是提供一种网络选择方法、装置、设备及存储介质，能够解决终端无法获取DC信息从而无法进行网络选择的问题。
第一方面，提供了一种网络选择方法，应用于终端，该方法包括：
在终端的第一网络故障的情况下，从目标网络获取灾情DC信息；
基于所述DC信息，进行网络选择；
所述目标网络包括：第一网络和/或第二网络；
所述第一网络是不存在于终端的禁用网络列表中的网络；
所述第二网络是存在于终端的禁用网络列表中的网络。
第二方面，提供了一种网络选择方法，应用于第一网络，该方法包括：
在终端的第一网络故障的情况下，向终端发送DC信息；
所述DC信息用于终端在第一网络故障的情况下进行网络选择；
所述第一网络是不存在于终端的禁用网络列表中的网络。
第三方面，提供了一种网络选择方法，应用于第二网络，该方法包括：
在终端的第一网络故障的情况下，向终端发送DC信息；
所述DC信息用于终端在第一网络故障的情况下进行网络选择；
所述第二网络是存在于终端的禁用网络列表中的网络。
第四方面，提供了一种网络选择装置，应用于终端，该装置包括：
获取模块，用于在终端的第一网络故障的情况下，从目标网络获取灾情DC信息；
选择模块，用于基于所述DC信息，进行网络选择；
所述目标网络包括：第一网络和/或第二网络；
所述第一网络是不存在于终端的禁用网络列表中的网络；
所述第二网络是存在于终端的禁用网络列表中的网络。
第五方面，提供了一种网络选择装置，应用于第一网络，所述装置包括：
第一发送模块，用于在终端的第一网络故障的情况下，向终端发送DC信息；
所述DC信息用于终端在第一网络故障的情况下进行网络选择；
所述第一网络是不存在于终端的禁用网络列表中的网络。
第六方面，提供了一种网络选择装置，应用于第二网络，所述装置包括：
第二发送模块，用于在终端的第一网络故障的情况下，向终端发送DC信息；
所述DC信息用于终端在第一网络故障的情况下进行网络选择；
所述第二网络是存在于终端的禁用网络列表中的网络。
第七方面，提供了一种终端，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面提出的网络选择方法的步骤。
第八方面，提供了一种第一网络设备，包括处理器，存储器及存储在所 述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第二方面提出的网络选择方法的步骤。
第九方面，提供了一种第二网络设备，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第三方面提出的网络选择方法的步骤。
第十方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被所述处理器执行时实现如第一方面提出的网络选择方法的步骤，或实现如第二方面提出的网络选择方法的步骤，或实现如第三方面提出的网络选择方法的步骤。
第十一方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面提出的网络选择方法的步骤，或实现如第二方面提出的网络选择方法的步骤，或实现如第三方面提出的网络选择方法的步骤。
第十二方面，提供了一种计算机程序产品，所述计算机程序产品被存储在非瞬态的存储介质中，所述计算机程序产品被至少一个处理器执行以实现如第一方面提出的网络选择方法的步骤，或实现如第二方面提出的网络选择方法的步骤，或实现如第三方面提出的网络选择方法的步骤。
第十三方面，提供一种通信设备，被配置为执行如第一方面提出的网络选择方法的步骤，或被配置为执行如第二方面提出的网络选择方法的步骤，或被配置为执行如第三方面提出的网络选择方法的步骤。
在本申请实施例中，通过在终端的第一网络故障的情况下，终端可以从第一网络或者禁用网络列表中的通信连接的第二网络获取DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
附图说明
图1是本申请实施例提供的一种无线通信系统的框图；
图2是本申请实施例提供的网络选择方法的流程示意图之一；
图3是本申请实施例提供的网络选择方法的流程示意图之二；
图4是本申请实施例提供的网络选择方法的流程示意图之三；
图5是本申请实施例提供的网络选择方法的流程示意图之四；
图6是本申请实施例提供的网络选择方法的流程示意图之五；
图7是本申请实施例提供的网络选择方法的流程示意图之六；
图8是本申请实施例提供的网络选择装置的结构示意图之一；
图9是本申请实施例提供的网络选择装置的结构示意图之二；
图10是本申请实施例提供的网络选择装置的结构示意图之三；
图11是本申请实施例提供的通信设备的结构示意图；
图12是本申请实施例提供的终端的硬件结构示意图；
图13是本申请实施例提供的第一网络设备的硬件结构示意图；
图14是本申请实施例提供的第二网络设备的硬件结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier  Frequency-Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。然而，以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，尽管这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1是本申请实施例提供的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11也可以称作终端设备或者用户终端(User Equipment，UE)，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、可穿戴式设备(Wearable Device)或车载终端(Vehicle User Equipment，VUE)、行人终端(Pedestrian User Equipment，PUE)等终端侧设备，可穿戴式设备包括：手环、耳机、眼镜等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以是基站或核心网，其中，基站可被称为节点B、演进节点B、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、B节点、演进型B节点(eNB)、家用B节点、家用演进型B节点、WLAN接入点、WiFi节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例，但是并不限定基站的具体类型。
下面结合附图，通过具体的实施例及其应用场景对本申请实施例提供的网络选择方法及装置进行详细地说明。
图2是本申请实施例提供的网络选择方法的流程示意图之一，该方法应用于终端，如图2所示，该方法包括如下步骤：
步骤200，在终端的第一网络故障的情况下，从目标网络获取灾情DC信息；
步骤210，基于所述DC信息，进行网络选择；
所述目标网络包括：第一网络和/或第二网络；
所述第一网络是不存在于终端的禁用网络列表中的网络；
所述第二网络是存在于终端的禁用网络列表中的网络。
可选地，在UE以UE操作模式A或B操作的情况下，允许的公共陆地移动网络(Public Land Mobile Network，PLMN)不在用户识别模块(Subscriber Identity Module，SIM)/通用用户识别模块(Universal Subscriber Identity Module，USIM)中的“禁止的PLMN”列表内，其中，该名单可以在移动设备(Mobile equipment，ME)存储器中进行扩展。在UE以UE操作模式C操作的情况下，允许的PLMN是不在SIM/USIM中的“禁止的PLMN”列表中或者不在ME中的“用于通用分组无线服务技术(General Packet Radio Service，GPRS)服务的禁止的PLMN”列表中。当SIM/USIM的“禁止的PLMN(Forbidden PLMN)”名单中除了PLMN之外没有可用的PLMN且可用的PLMN指示适用于灾难条件时，可以将这一PLMN视为允许向UE注册，而适用灾难条件。因此，UE可以在家乡网络即第一网络故障的情况下，选择其他网络为其提供服务，比如紧急服务，数据服务，语音服务及视频服务等。
可选地，第一网络发生故障可以是指第一网络的相关设备发生故障或灾害，比如核心网设备发生故障，导致无法为UE提供服务。
可选地，第一网络的灾情、灾难以及灾害等，均可以指第一网络发生故障的情况。
可选地，第一网络为不在UE的"Forbidden PLMN"列表(list)中的网络，可以是UE的家乡网络，还可以为UE提供DC信息；
可选地，第二网络为存在于UE的"Forbidden PLMN"list中的可用(available)网络，可以用于为UE提供DC信息。
可选地，第二网络可以为存在于终端的禁用网络列表中的网络，且所述终端在所述第二网络的覆盖范围内，以保证终端可以接收到第二网络发送的信息。可选地，灾情(Disaster Condition，DC)信息可以包含用于通知UE第一网络发生灾难的指示，和/或，灾难状况下第二网络或其他网络可以为第一网络的UE提供服务的指示等信息。
可选地，如果移动终端(Mobile Station，MS)无法找到适合驻留的小区，或者未插入SIM，或者如果MS以独立非公用网络(Stand-alone Non-Public Network，SNPN)访问模式运行，或者接收到特定消息，则“用户数据列表”中没有有效条目响应位置管理(Location registration，LR)请求(例如“非法MS”)，无论PLMN身份或SNPN身份如何，它都会尝试驻留在小区上，并进入“受限服务”状态，在该状态下，它只能尝试进行紧急呼叫或访问本地运营商服务(Restricted Local Operator Services，RLOS)。在NB-S1模式下运行的MS绝不会尝试拨打紧急电话或访问受限制的本地运营商服务(Restricted Local Operator Services，RLOS)。在独立非公用网络(Stand-alone Non-Public Network，SNPN)接入模式下运行的MS绝不会尝试拨打紧急电话。在N1模式下运行的MS从不尝试访问RLOS。
可选地，当因为设备故障、灾害等原因导致UE的第一网络不可用时，UE可以接收DC信息，用于指示当第一网络发生故障时，第二网络或其他网络支持为家乡网络为第一网络的UE提供服务。其中DC信息可以通过MIB、SIB1广播，也可能通过其他SIB下发；由于最小化服务中断(Minimization of service Interruption，MINT)是种极端情况，为了节省资源，更大可能为通过其他SIB下发。如果DC信息不通过MIB、SIB1下发，而是通过其他SIB下发，由于网络不会主动下发其他SIB信息，因此UE将不会读取第二网络的其他SIB信息来获取DC信息，进而无法触发灾难状况下的网络选择过程，而是进入受限服务状态，进行紧急注册。
可选地，为了解决如何触发UE获取DC信息的问题，可以在终端的第一网络故障的情况下，终端从目标网络获取灾情DC信息，以保证终端可以接收到DC信息，然后可以基于DC信息进行网络选择过程。
可选地，当没有允许的PLMN(Allowable PLMN)时，如果UE支持MINT特征(MINT feature)，则可以获取DC信息。
可选地，UE可以从第一网络获取DC信息，比如当第一网络发生灾难时，第一网络可以向UE下发DC信息；
可选地，UE可以从第一网络获取DC信息，比如当第一网络发生灾难时，第一网络可以广播DC信息；
可选地，UE可以从第二网络获取DC信息，比如当第一网络发生灾难时，第二网络可以广播DC信息
可选地，UE接收到DC信息后，可以基于DC信息进行网络接入控制，即网络选择。
可选地，第一网络可以是但不限于新空口(New Radio，NR)或长期演进(Long Term Evolution，LTE)中的PLMN，可以称为第一PLMN。
可选地，第二网络可以是但不限于NR或LTE中的PLMN，可以称为第二PLMN。
在本申请实施例中，通过在终端的第一网络故障的情况下，终端可以从第一网络或者禁用网络列表中的通信连接的第二网络获取DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
可选地，所述在终端的第一网络故障的情况下，从目标网络获取DC信息，包括：
在非接入层NAS获取的网络标识对应的网络均位于终端的禁用网络列表，且终端支持最小化服务中断MINT feature的情况下，从目标网络获取DC信息。
可选地，UE搜网获取到MIB和SIB1的系统信息后，AS可以从SIB1中读取PLMN标识(PLMN ID)，并发送给非接入层(Non-Access Stratum，NAS)，如果NAS确定有Allowable PLMN(s)，则从中选择一个Allowable PLMN进行，执行小区(cell)选择等过程，如果NAS收到的PLMN ID(s)都位于“禁止的PLMN”列表(forbidden list)，则可以进一步判断UE是否支持MINT feature。
可选地，如果UE不支持MINT feature，则UE进入受限服务状态；
可选地，如果UE支持MINT feature，则可以从位于forbidden list的PLMN ID(s)中选择一个PLMN作为第二网络，用于获取DC信息。
可选地，所述目标网络是第一网络的情况下，所述从目标网络获取DC信息包括：
接收第一网络故障后发送的DC信息。
可选地，UE可以从第一网络获取DC信息，比如当第一网络发生灾难时， 第一网络可以向UE下发DC信息；
可选地，当第一网络发生灾难的情况下，比如核心网设备故障，基站侧依旧可以下发或广播系统信息，则可以下发DC信息至UE。
可选地，DC信息可以是：灾难情况下，可以为第一网络提供数据服务的第三网络的网络名单PLMN列表(PLMN list)，和/或，第一网络发生灾难的指示。
可选地，所述DC信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
可选地，第一网络向UE发送DC信息时，可以通过但不限于以下至少一项消息进行发送：NAS消息；和AS消息等。
可选地，所述目标网络是第一网络和/或第二网络的情况下，所述从目标网络获取DC信息包括：
接收第一网络和/或第二网络广播发送的DC信息。
可选地，UE可以从第一网络获取DC信息，比如当第一网络发生灾难时，第一网络可以广播DC信息；
可选地，UE可以从第二网络获取DC信息，比如当第一网络发生灾难时，第二网络可以广播DC信息。
可选地，UE可以从第一网络或第二网络获取DC信息，比如当第一网络发生灾难时，第一网络和第二网络可以均广播DC信息；UE可以接收其中一个网络广播发送的DC信息，或接收两个网络广播的DC信息，并择一使用，比如可以任意择一使用，或选择在先接收到的DC信息进行使用。
可选地，如果UE支持MINT feature，则可以从位于forbidden list的PLMN ID(s)中选择一个PLMN作为第二网络；
可选地，可以作为第二网络的PLMN均可以广播DC信息，以保证UE可以选择到正在广播DC信息的网络作为第二网络。
可选地，当第一网络发生灾难的情况下，比如核心网设备故障，基站侧依旧可以下发或广播系统信息，则可以广播DC信息，UE则可以接收到第一网络广播的DC信息。
可选地，所述DC信息通过以下至少一项消息进行发送：MIB；SIB1； 和其他SIB信息。
可选地，DC信息可以通过但不限于以下至少一项消息进行广播：
MIB、SIB1或者其他SIB信息。
可选地，所述目标网络是第二网络的情况下，所述从目标网络获取DC信息包括：
向第二网络发送请求信息，所述请求信息用于请求DC信息。
可选地，UE可以向第二网络请求DC信息；
可选地，DC信息可以包含第二网络是否支持为发生灾难PLMN的UE提供数据服务，和/或，第二网络提供的支持为灾难PLMN的UE提供服务的PLNN list等信息。
可选地，第二网络接受到UE的请求后可以返回DC信息；
可选地，UE可以根据第二网络反馈的DC信息中的forbidden PLMN进行接入控制。
可选地，UE可以根据第二网络反馈的信息决定是否可以接入第二网络获取服务，比如在DC信息包含第二网络可以为发生灾难PLMN的UE提供数据服务的指示信息时，则可以接入第二网络获取服务；
可选地，UE可以根据第二网络反馈的信息即DC信息确定可以接入并获取服务第三网络，完成网络选择过程。
可选地，所述请求信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
可选地，UE向第二网络请求DC信息时，该请求可以通过NAS消息或者AS消息进行请求。
可选地，所述DC信息包括：
第三网络的列表；
其中，所述第三网络是支持为所述终端提供第一服务的网络。
可选地，DC信息可以包括支持为所述终端提供第一服务的第三网络的列表；
可选地，第三网络的列表可以包括全部或部分支持为所述终端提供第一服务的第三网络。
可选地，第三网络的列表可以包括第一网络和/或第二网络为UE提供的支持为所述终端提供第一服务的第三网络。
可选地，第三网络可以是但不限于NR或LTE中的PLMN，可以称为第三PLMN。
可选地，目标网络是第二网络时，所述DC信息还包括：
用于指示第二网络是否支持为所述终端提供第一服务的第一信息。
可选地，目标网络是第二网络时，所述DC信息还可以包括用于指示第二网络是否支持为所述终端提供第一服务的第一信息，以告知UE是否可以向第二网络获取服务。
可选地，所述第一服务包括以下任一项或其组合：
紧急业务；
数据业务；
语音业务；
视频业务。
可选地，第一服务可以包括但不限于以下任一项或其组合：紧急业务；数据业务；语音业务；视频业务；以保证UE的正常业务处理。
在本申请实施例中，通过在终端的第一网络故障的情况下，终端可以从第一网络或者禁用网络列表中的通信连接的第二网络获取DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
图3是本申请实施例提供的网络选择方法的流程示意图之二，该方法应用于第一网络，如图3所示，该方法包括如下步骤：
步骤300，在终端的第一网络故障的情况下，向终端发送DC信息；
所述DC信息用于终端在第一网络故障的情况下进行网络选择；
所述第一网络是不存在于终端的禁用网络列表中的网络。
可选地，第一网络为不在UE的“禁止的PLMN”列表("Forbidden PLMN"list)中的网络，可以是UE的家乡网络，还可以为UE提供DC信息；其中，公共陆地移动(通信)网络(Public Land Mobile Network，PLMN)；
可选地，灾情(Disaster Condition，DC)信息可以包含用于通知UE第一网络发生灾难的指示，和/或，灾难状况下第二网络或其他网络可以为第一 网络的UE提供服务的指示等信息。
可选地，第二网络为存在于UE的"Forbidden PLMN"list中的可用(available)网络，可以用于为UE提供DC信息。
可选地，当因为设备故障、灾害等原因导致UE的第一网络不可用时，UE可以接收DC信息，用于指示当第一网络发生故障时，第二网络或其他网络支持为家乡网络为第一网络的UE提供服务。其中DC信息可以通过MIB、SIB1广播，也可能通过其他SIB下发；由于最小化服务中断(Minimization of service Interruption，MINT)是种极端情况，为了节省资源，更大可能为通过其他SIB下发。如果DC信息不通过MIB、SIB1下发，而是通过其他SIB下发，由于网络不会主动下发其他SIB信息，因此UE将不会读取第二网络的其他SIB信息来获取DC信息，进而无法触发灾难状况下的网络选择过程，而是进入受限服务状态，进行紧急注册。
可选地，为了解决如何触发UE获取DC信息的问题，可以在终端的第一网络故障的情况下，第一网络可以向终端发送灾情DC信息，以保证终端可以接收到DC信息，并基于DC信息进行网络选择过程。
可选地，当没有Allowable PLMN时，如果UE支持MINT feature，则可以获取DC信息。
可选地，第一网络可以向终端发送灾情DC信息，比如当第一网络发生灾难时，第一网络可以向UE下发DC信息；
可选地，第一网络可以向终端发送灾情DC信息，比如当第一网络发生灾难时，第一网络可以广播DC信息；
可选地，UE接收到DC信息后，可以基于DC信息进行网络接入控制，即网络选择。
可选地，第一网络可以是但不限于NR或LTE中的PLMN，可以称为第一PLMN。
可选地，第二网络可以是但不限于NR或LTE中的PLMN，可以称为第二PLMN。
在本申请实施例中，通过在终端的第一网络故障的情况下，第一网络可以主动向终端发送DC信息，保证终端可以获取到DC信息，进行网络选择， 提高了网络接入成功率。
可选地，所述向终端发送DC信息，包括：
向终端广播发送所述DC信息。
可选地，第一网络可以向终端发送灾情DC信息，比如当第一网络发生灾难时，第一网络可以广播DC信息；
可选地，如果UE支持MINT feature，则可以从位于forbidden list的PLMN ID(s)中选择一个PLMN作为第二网络；
可选地，当第一网络发生灾难的情况下，比如核心网设备故障，基站侧依旧可以下发或广播系统信息，则可以广播DC信息，UE则可以接收到第一网络广播的DC信息。
可选地，所述DC信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
可选地，DC信息可以通过但不限于以下至少一项消息进行广播：
MIB、SIB1或者其他SIB信息。
可选地，所述DC信息包括：
第三网络的列表；
其中，所述第三网络是支持为所述终端提供第一服务的网络。
可选地，DC信息可以包括支持为所述终端提供第一服务的第三网络的列表；
可选地，第三网络的列表可以包括全部或部分支持为所述终端提供第一服务的第三网络。
可选地，第三网络的列表可以包括第一网络和/或第二网络为UE提供的支持为所述终端提供第一服务的第三网络。
可选地，第三网络可以是但不限于新空口(New Radio，NR)或长期演进(Long Term Evolution，LTE)中的PLMN，可以称为第三PLMN。
可选地，所述第一服务包括以下任一项或其组合：
紧急业务；
数据业务；
语音业务；
视频业务。
可选地，第一服务可以包括但不限于以下任一项或其组合：紧急业务；数据业务；语音业务；视频业务；以保证UE的正常业务处理。
在本申请实施例中，通过在终端的第一网络故障的情况下，第一网络可以主动向终端发送DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
图4是本申请实施例提供的网络选择方法的流程示意图之三，该方法应用于第二网络，如图4所示，该方法包括如下步骤：
步骤400，在终端的第一网络故障的情况下，向终端发送DC信息；
所述DC信息用于终端在第一网络故障的情况下进行网络选择；
所述第二网络是存在于终端的禁用网络列表中的网络。
可选地，第一网络为不在UE的"Forbidden PLMN"list中的网络，可以是UE的家乡网络，还可以为UE提供DC信息；其中，公共陆地移动(通信)网络(Public Land Mobile Network，PLMN)；
第二网络为存在于UE的"Forbidden PLMN"list中的available网络，可以用于为UE提供DC信息。
可选地，灾情(Disaster Condition，DC)信息可以包含用于通知UE第一网络发生灾难的指示，和/或，灾难状况下第二网络或其他网络可以为第一网络的UE提供服务的指示等信息。
可选地，当因为设备故障、灾害等原因导致UE的第一网络不可用时，UE可以接收DC信息，用于指示当第一网络发生故障时，第二网络或其他网络支持为家乡网络为第一网络的UE提供服务。其中DC信息可以通过MIB、SIB1广播，也可能通过其他SIB下发；由于最小化服务中断(Minimization of service Interruption，MINT)是种极端情况，为了节省资源，更大可能为通过其他SIB下发。如果DC信息不通过MIB、SIB1下发，而是通过其他SIB下发，由于网络不会主动下发其他SIB信息，因此UE将不会读取第二网络的其他SIB信息来获取DC信息，进而无法触发灾难状况下的网络选择过程，而是进入受限服务状态，进行紧急注册。
可选地，为了解决如何触发UE获取DC信息的问题，可以在终端的第 一网络故障的情况下，第二网络向终端发送灾情DC信息，以保证终端可以接收到DC信息，然后可以基于DC信息进行网络选择过程。
可选地，当没有Allowable PLMN时，如果UE支持MINT feature，则可以获取DC信息。
可选地，第二网络可以向终端发送灾情DC信息，比如当第一网络发生灾难时，第二网络可以广播DC信息；
可选地，UE接收到DC信息后，可以基于DC信息进行网络接入控制，即网络选择。
可选地，第一网络可以是但不限于NR或LTE中的PLMN，可以称为第一PLMN。
可选地，第二网络可以是但不限于NR或LTE中的PLMN，可以称为第二PLMN。
在本申请实施例中，通过在终端的第一网络故障的情况下，终端的禁用网络列表中的通信连接的第二网络可以向终端发送DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
可选地，所述向终端发送DC信息，包括：
向终端广播发送所述DC信息。
可选地，第二网络可以向终端发送灾情DC信息，比如当第一网络发生灾难时，第二网络可以广播DC信息。
可选地，如果UE支持MINT feature，则可以从位于forbidden list的PLMN ID(s)中选择一个PLMN作为第二网络；
可选地，可以作为第二网络的PLMN均可以广播DC信息，以保证UE可以选择到正在广播DC信息的网络作为第二网络。
可选地，所述DC信息通过以下至少一项消息进行发送：MIB；SIB1；和其他SIB信息。
可选地，DC信息可以通过但不限于以下至少一项消息进行广播：
MIB、SIB1或者其他SIB信息。
可选地，所述向终端发送DC信息，包括：
接收终端发送的请求信息；
基于所述请求信息，向终端发送DC信息。
可选地，UE可以向第二网络请求DC信息；
可选地，DC信息可以包含第二网络是否支持为发生灾难PLMN的UE提供数据服务，和/或，第二网络提供的支持为灾难PLMN的UE提供服务的PLNN list等信息。
可选地，第二网络接受到UE的请求后可以返回DC信息；
可选地，UE可以根据第二网络反馈的DC信息中的forbidden PLMN进行接入控制。
可选地，所述请求信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
可选地，UE向第二网络请求DC信息时，该请求可以通过NAS消息或者AS消息进行请求。
可选地，所述DC信息包括：
第三网络的列表；
其中，所述第三网络是支持为所述终端提供第一服务的网络。
可选地，DC信息可以包括支持为所述终端提供第一服务的第三网络的列表；
可选地，第三网络的列表可以包括全部或部分支持为所述终端提供第一服务的第三网络。
可选地，第三网络的列表可以包括第一网络和/或第二网络为UE提供的支持为所述终端提供第一服务的第三网络。
可选地，第三网络可以是但不限于NR或LTE中的PLMN，可以称为第三PLMN。
可选地，所述DC信息还包括：
用于指示第二网络是否支持为所述终端提供第一服务的第一信息。
可选地，目标网络是第二网络时，所述DC信息还可以包括用于指示第二网络是否支持为所述终端提供第一服务的第一信息，以告知UE，UE是否可以直接接入第二网络。
可选地，所述第一服务包括以下任一项或其组合：
紧急业务；
数据业务；
语音业务；
视频业务。
可选地，第一服务可以包括但不限于以下任一项或其组合：紧急业务；数据业务；语音业务；视频业务；以保证UE的正常业务处理。
在本申请实施例中，通过在终端的第一网络故障的情况下，终端的禁用网络列表中的通信连接的第二网络可以向终端发送DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
图5是本申请实施例提供的网络选择方法的流程示意图之四；如图5所示，该方法包括如下步骤：
步骤500：UE搜网，并接收MIB、SIB1的系统信息；
步骤510：接入层(Access Stratum，AS)从SIB1读取PLMN ID，并发送给NAS层；
可选地，AS获取PLMN ID和测量信息等相关信息，并获取其中的PLMN ID发送给NAS层；
步骤520：UE进行PLMN选择；
可选地，NAS可以根据收到的PLMN ID(s)和存储的PLMN list信息，例如，forbidden list等，进行PLMN选择；
步骤530a：如果确定有Allowable PLMN(s)，则可以从中选择一个Allowable PLMN进行，执行cell选择等过程；
步骤530b：如果NAS收到的PLMN ID(s)都位于forbidden list，即没有Allowable PLMN，可以判断UE是否支持MINT feature；
步骤540a：如果UE不支持MINT feature，则UE进入受限服务状态；
步骤540b：UE选择第二网络；
可选地，如果UE支持MINT feature，则可以从位于forbidden list的PLMN ID(s)中选择一个PLMN作为第二网络；
步骤550：UE向第二网络请求DC信息；
可选地，请求信息可以通过NAS消息或者AS消息进行请求；
可选地，DC信息可以包含第二网络是否为发生灾难PLMN的UE提供数据服务，和/或，支持为灾难PLMN的UE提供服务的PLMN list等信息。
步骤560：UE从第二网络获取DC信息；
可选地，第二网络可以根据UE的请求，第二网络返回DC信息；
步骤570：UE根据DC信息进行网络选择。
可选地，UE可以根据第二网络反馈的DC信息决定是否可以接入第二网络获取服务，比如在DC信息包含第二网络可以为发生灾难PLMN的UE提供数据服务的指示信息时，则可以接入第二网络获取服务；
可选地，UE可以根据第二网络反馈的信息即DC信息确定可以接入并获取服务的第三网络，完成网络选择过程。
图6是本申请实施例提供的网络选择方法的流程示意图之五；如图6所示，该方法包括如下步骤：
步骤600：UE搜网，并接收MIB、SIB1的系统信息；
步骤610：接入层AS从SIB1读取PLMN ID，并发送给NAS层；
可选地，AS获取PLMN ID和测量信息等相关信息，并获取其中的PLMN ID发送给NAS层；
步骤620：UE进行PLMN选择；
可选地，NAS可以根据收到的PLMN ID(s)和存储的PLMN list信息，例如，forbidden list等，进行PLMN选择；
步骤630a：如果确定有Allowable PLMN(s)，则可以从中选择一个Allowable PLMN进行，执行cell选择等过程；
步骤630b：如果NAS收到的PLMN ID(s)都位于forbidden list，即没有Allowable PLMN，可以判断UE是否支持MINT feature；
步骤640a：如果UE不支持MINT feature，则UE进入受限服务状态；
步骤640b：UE选择第二网络；
可选地，如果UE支持MINT feature，则可以从位于forbidden list的PLMN ID(s)中选择一个PLMN作为第二网络；
步骤650：UE读取第二网络广播的DC信息；
第二网络广播DC信息；UE可以读取第二网络广播的DC信息；
该信息可以通过MIB、SIB1或者其他SIB信息进行广播。
步骤660：UE根据DC信息进行网络选择。
可选地，UE可以根据第二网络广播的DC信息进行forbidden PLMN的接入控制。
可选地，UE可以根据第二网络反馈的DC信息决定是否可以接入第二网络获取服务，比如在DC信息包含第二网络可以为发生灾难PLMN的UE提供数据服务的指示信息时，则可以接入第二网络获取服务；
可选地，UE可以根据第二网络反馈的信息即DC信息确定可以接入并获取服务的第三网络，完成网络选择过程。
图7是本申请实施例提供的网络选择方法的流程示意图之六；如图7所示，该方法包括如下步骤：
步骤700：第一网络发生灾难；
步骤710：第一网络向UE发送DC信息；
可选地，DC信息可以通过但不限于以下消息进行传输：NAS消息、AS消息等；
步骤720：UE进行PLMN选择；
如果确定有其他allowable PLMN(s)，则UE进行正常的PLMN选择；
步骤730：UE根据DC信息进行网络选择；
如果UE搜索到的PLMN(s)都位于forbidden list，则基于收到的DC信息，进行PLMN选择。
可选地，可选地，UE可以根据DC信息确定可以接入并获取服务的第三网络的网络名单PLMN list，并基于第三网络的网络名单PLMN list完成网络选择过程。
需要说明的是，本申请实施例提供的网络选择方法，执行主体可以为网络选择装置，或者，该网络选择装置中的用于执行网络选择方法的控制模块。本申请实施例中以网络选择装置执行网络选择方法为例，说明本申请实施例提供的网络选择装置。
图8是本申请实施例提供的网络选择装置的结构示意图之一，应用于终端，所述装置包括：获取模块810和选择模块820；其中：
获取模块810用于在终端的第一网络故障的情况下，从目标网络获取灾情DC信息；
选择模块820用于基于所述DC信息，进行网络选择；
所述目标网络包括：第一网络和/或第二网络；
所述第一网络是不存在于终端的禁用网络列表中的网络；
所述第二网络是存在于终端的禁用网络列表中的网络。
具体地，网络选择装置可以在终端的第一网络故障的情况下，通过获取模块810从第一网络和/或第二网络获取灾情DC信息；随后通基于所述DC信息，过选择模块820进行网络选择。
在此需要说明的是，本申请实施例提供的上述装置，能够实现上述网络选择方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在本申请实施例中，通过在终端的第一网络故障的情况下，终端可以从第一网络或者禁用网络列表中的通信连接的第二网络获取DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
可选地，所述获取模块用于：
在非接入层NAS获取的网络标识对应的网络均位于终端的禁用网络列表，且终端支持最小化服务中断MINT feature的情况下，从目标网络获取DC信息。
可选地，所述目标网络是第一网络的情况下，所述获取模块用于：
接收第一网络故障后发送的DC信息。
可选地，所述DC信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
可选地，所述目标网络是第一网络和/或第二网络的情况下，所述获取模块用于：
接收第一网络和/或第二网络广播发送的DC信息。
可选地，所述DC信息通过以下至少一项消息进行发送：MIB；SIB1；和其他SIB信息。
可选地，所述目标网络是第二网络的情况下，所述获取模块用于：
向第二网络发送请求信息，所述请求信息用于请求DC信息。
可选地，所述请求信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
可选地，所述DC信息包括：
第三网络的列表；
其中，所述第三网络是支持为所述终端提供第一服务的网络。
可选地，目标网络是第二网络时，所述DC信息还包括：
用于指示第二网络是否支持为所述终端提供第一服务的第一信息。
可选地，所述第一服务包括以下任一项或其组合：
紧急业务；
数据业务；
语音业务；
视频业务。
本申请实施例中的网络选择装置可以是装置，也可以是终端中的部件、集成电路、或芯片。该装置可以是移动终端，也可以为非移动终端。示例性的，移动终端可以包括但不限于上述所列举的终端11的类型，非移动终端可以为服务器、网络附属存储器(Network Attached Storage，NAS)、个人计算机(personal computer，PC)、电视机(television，TV)、柜员机或者自助机等，本申请实施例不作具体限定。
本申请实施例中的网络选择装置可以为具有操作系统的装置。该操作系统可以为安卓(Android)操作系统，可以为ios操作系统，还可以为其他可能的操作系统，本申请实施例不作具体限定。
本申请实施例提供的网络选择装置能够实现图2至图8的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
图9是本申请实施例提供的网络选择装置的结构示意图之二，应用于第一网络，所述装置包括：第一发送模块910，其中：
第一发送模块910用于在终端的第一网络故障的情况下，向终端发送DC信息；
所述DC信息用于终端在第一网络故障的情况下进行网络选择；
所述第一网络是不存在于终端的禁用网络列表中的网络。
可选地，网络选择装置可以在终端的第一网络故障的情况下，通过第一发送模块910向终端发送DC信息。
在此需要说明的是，本申请实施例提供的上述装置，能够实现上述网络选择方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在本申请实施例中，通过在终端的第一网络故障的情况下，第一网络可以主动向终端发送DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
可选地，所述第一发送模块用于：
向终端广播发送所述DC信息。
可选地，所述DC信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
可选地，所述DC信息包括：
第三网络的列表；
其中，所述第三网络是支持为所述终端提供第一服务的网络。
在本申请实施例中，通过在终端的第一网络故障的情况下，第一网络可以主动向终端发送DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
本申请实施例中的网络选择装置可以是装置，也可以是终端中的部件、集成电路、或芯片。该装置可以是移动终端，也可以为非移动终端。示例性的，移动终端可以包括但不限于上述所列举的终端11的类型，非移动终端可以为服务器、网络附属存储器(Network Attached Storage，NAS)、个人计算机(personal computer，PC)、电视机(television，TV)、柜员机或者自助机等，本申请实施例不作具体限定。
本申请实施例中的网络选择装置可以为具有操作系统的装置。该操作系统可以为安卓(Android)操作系统，可以为ios操作系统，还可以为其他可能的操作系统，本申请实施例不作具体限定。
本申请实施例提供的网络选择装置能够实现图2至图8的方法实施例实 现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
图10是本申请实施例提供的网络选择装置的结构示意图之三，应用于第二网络设备，所述装置包括：第二发送模块1010，其中：
第二发送模块1010用于在终端的第一网络故障的情况下，向终端发送DC信息；
所述DC信息用于终端在第一网络故障的情况下进行网络选择；
所述第二网络是存在于终端的禁用网络列表中的网络。
具体地，网络选择装置可以在终端的第一网络故障的情况下，通过第二发送模块1010向终端发送DC信息。
在此需要说明的是，本申请实施例提供的上述装置，能够实现上述网络选择方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在本申请实施例中，通过在终端的第一网络故障的情况下，终端的禁用网络列表中的通信连接的第二网络可以向终端发送DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
可选地，所述第二发送模块用于：
向终端广播发送所述DC信息。
可选地，所述DC信息通过以下至少一项消息进行发送：MIB；SIB1；和其他SIB信息。
可选地，所述第二发送模块用于：
接收终端发送的请求信息；
基于所述请求信息，向终端发送DC信息。
可选地，所述请求信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
可选地，所述DC信息包括：
第三网络的列表；
其中，所述第三网络是支持为所述终端提供第一服务的网络。
可选地，所述DC信息还包括：
用于指示第二网络是否支持为所述终端提供第一服务的第一信息。
可选地，所述第一服务包括以下任一项或其组合：
紧急业务；
数据业务；
语音业务；
视频业务。
在本申请实施例中，通过在终端的第一网络故障的情况下，终端的禁用网络列表中的通信连接的第二网络可以向终端发送DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
本申请实施例中的网络选择装置可以是装置，也可以是终端中的部件、集成电路、或芯片。该装置可以是移动终端，也可以为非移动终端。示例性的，移动终端可以包括但不限于上述所列举的终端11的类型，非移动终端可以为服务器、网络附属存储器(Network Attached Storage，NAS)、个人计算机(personal computer，PC)、电视机(television，TV)、柜员机或者自助机等，本申请实施例不作具体限定。
本申请实施例中的网络选择装置可以为具有操作系统的装置。该操作系统可以为安卓(Android)操作系统，可以为ios操作系统，还可以为其他可能的操作系统，本申请实施例不作具体限定。
本申请实施例提供的网络选择装置能够实现图2至图8的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选地，图11是本申请实施例提供的通信设备的结构示意图，如图11所示，通信设备1100，包括处理器1101，存储器1102，存储在存储器1102上并可在所述处理器1101上运行的程序或指令，例如，该通信设备1100为终端时，该程序或指令被处理器1101执行时实现上述网络选择方法实施例的各个过程，且能达到相同的技术效果。该通信设备1100为网络侧设备时，该程序或指令被处理器1101执行时实现上述网络选择方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
图12是本申请实施例提供的终端的硬件结构示意图。
该终端1200包括但不限于：射频单元1201、网络模块1202、音频输出单元1203、输入单元1204、传感器1205、显示单元1206、用户输入单元1207、 接口单元1208、存储器1209、以及处理器1210等部件。
本领域技术人员可以理解，终端1200还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器1210逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图12中示出的终端结构并不构成对终端的限定，终端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，在此不再赘述。
应理解的是，本申请实施例中，输入单元1204可以包括图形处理器(Graphics Processing Unit，GPU)12041和麦克风12042，图形处理器12041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1206可包括显示面板12061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板12061。用户输入单元1207包括触控面板12071以及其他输入设备12072。触控面板12071，也称为触摸屏。触控面板12071可包括触摸检测装置和触摸控制器两个部分。其他输入设备12072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元1201将来自通信对端的信息接收后，给处理器1210处理；另外，将待传输的信息发送给通信对端。通常，射频单元1201包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器1209可用于存储软件程序或指令以及各种数据。存储器1209可主要包括存储程序或指令区和存储数据区，其中，存储程序或指令区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器1209可以包括高速随机存取存储器，还可以包括非易失性存储器，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。例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。
处理器1210可包括一个或多个处理单元；可选地，处理器1210可集成 应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序或指令等，调制解调处理器主要处理无线通信，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器1210中。
其中，处理器1210用于：
在终端的第一网络故障的情况下，从目标网络获取灾情DC信息；
基于所述DC信息，进行网络选择；
所述目标网络包括：第一网络和/或第二网络；
所述第一网络是不存在于终端的禁用网络列表中的网络；
所述第二网络是存在于终端的禁用网络列表中的网络。
在本申请实施例中，通过在终端的第一网络故障的情况下，终端可以从第一网络或者禁用网络列表中的通信连接的第二网络获取DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
可选地，所述在终端的第一网络故障的情况下，处理器1210用于：
在非接入层NAS获取的网络标识对应的网络均位于终端的禁用网络列表，且终端支持最小化服务中断MINT feature的情况下，从目标网络获取DC信息。
可选地，所述目标网络是第一网络的情况下，处理器1210用于：
接收第一网络故障后发送的DC信息。
可选地，所述DC信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
可选地，所述目标网络是第一网络和/或第二网络的情况下，处理器1210用于：
接收第一网络和/或第二网络广播发送的DC信息。
可选地，所述DC信息通过以下至少一项消息进行发送：MIB；SIB1；和其他SIB信息。
可选地，所述目标网络是第二网络的情况下，处理器1210用于：
向第二网络发送请求信息，所述请求信息用于请求DC信息。
可选地，所述请求信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
可选地，所述DC信息包括：
第三网络的列表；
其中，所述第三网络是支持为所述终端提供第一服务的网络。
可选地，目标网络是第二网络时，所述DC信息还包括：
用于指示第二网络是否支持为所述终端提供第一服务的第一信息。
可选地，所述第一服务包括以下任一项或其组合：
紧急业务；
数据业务；
语音业务；
视频业务。
在本申请实施例中，通过在终端的第一网络故障的情况下，终端可以从第一网络或者禁用网络列表中的通信连接的第二网络获取DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
图13是本申请实施例提供的第一网络设备的硬件结构示意图。
如图13所示，该网络侧设备1300包括：天线1301、射频装置1302、基带装置1303。天线1301与射频装置1302连接。在上行方向上，射频装置1302通过天线1301接收信息，将接收的信息发送给基带装置1303进行处理。在下行方向上，基带装置1303对要发送的信息进行处理，并发送给射频装置1302，射频装置1302对收到的信息进行处理后经过天线1301发送出去。
上述频带处理装置可以位于基带装置1303中，以上实施例中网络侧设备执行的方法可以在基带装置1303中实现，该基带装置1303包括处理器1304和存储器1305。
基带装置1303例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图13所示，其中一个芯片例如为处理器1304，与存储器1305连接，以调用存储器1305中的程序，执行以上方法实施例中所示的网络设备操作。
该基带装置1303还可以包括网络接口1306，用于与射频装置1302交互信息，该接口例如为通用公共无线接口(common public radio interface，简称CPRI)。
具体地，本申请实施例的网络侧设备还包括：存储在存储器1305上并可 在处理器1304上运行的指令或程序，处理器1304调用存储器1305中的指令或程序执行图9所示各模块执行的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
其中，处理器1304用于：
在终端的第一网络故障的情况下，向终端发送DC信息；
所述DC信息用于终端在第一网络故障的情况下进行网络选择；
所述第一网络是不存在于终端的禁用网络列表中的网络。
在本申请实施例中，通过在终端的第一网络故障的情况下，第一网络可以主动向终端发送DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
可选地，处理器1304用于：
向终端广播发送所述DC信息。
可选地，所述DC信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
可选地，所述DC信息包括：
第三网络的列表；
其中，所述第三网络是支持为所述终端提供第一服务的网络。
可选地，所述第一服务包括以下任一项或其组合：
紧急业务；
数据业务；
语音业务；
视频业务。
在本申请实施例中，通过在终端的第一网络故障的情况下，第一网络可以主动向终端发送DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
图14是本申请实施例提供的第二网络设备的硬件结构示意图。
如图14所示，该网络侧设备1400包括：天线1401、射频装置1402、基带装置1403。天线1401与射频装置1402连接。在上行方向上，射频装置1402通过天线1401接收信息，将接收的信息发送给基带装置1403进行处理。在 下行方向上，基带装置1403对要发送的信息进行处理，并发送给射频装置1402，射频装置1402对收到的信息进行处理后经过天线1401发送出去。
上述频带处理装置可以位于基带装置1403中，以上实施例中网络侧设备执行的方法可以在基带装置1403中实现，该基带装置1403包括处理器1404和存储器1405。
基带装置1403例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图14所示，其中一个芯片例如为处理器1404，与存储器1405连接，以调用存储器1405中的程序，执行以上方法实施例中所示的网络设备操作。
该基带装置1403还可以包括网络接口1406，用于与射频装置1402交互信息，该接口例如为通用公共无线接口(common public radio interface，简称CPRI)。
具体地，本申请实施例的网络侧设备还包括：存储在存储器1405上并可在处理器1404上运行的指令或程序，处理器1404调用存储器1405中的指令或程序执行图10所示各模块执行的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
其中，处理器1404用于：
在终端的第一网络故障的情况下，向终端发送DC信息；
所述DC信息用于终端在第一网络故障的情况下进行网络选择；
所述第二网络是存在于终端的禁用网络列表中的网络。
在本申请实施例中，通过在终端的第一网络故障的情况下，终端的禁用网络列表中的通信连接的第二网络可以向终端发送DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
可选地，处理器1404用于：
向终端广播发送所述DC信息。
可选地，所述DC信息通过以下至少一项消息进行发送：MIB；SIB1；和其他SIB信息。
可选地，处理器1404用于：
接收终端发送的请求信息；
基于所述请求信息，向终端发送DC信息。
可选地，所述请求信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
可选地，所述DC信息包括：
第三网络的列表；
其中，所述第三网络是支持为所述终端提供第一服务的网络。
可选地，所述DC信息还包括：
用于指示第二网络是否支持为所述终端提供第一服务的第一信息。
可选地，所述第一服务包括以下任一项或其组合：
紧急业务；
数据业务；
语音业务；
视频业务。
在本申请实施例中，通过在终端的第一网络故障的情况下，终端的禁用网络列表中的通信连接的第二网络可以向终端发送DC信息，保证终端可以获取到DC信息，进行网络选择，提高了网络接入成功率。
本申请实施例还提供一种可读存储介质，所述可读存储介质可以是非易失的，也可以是易失的，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述网络选择方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述网络选择方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序产品，其中，所述计算机程序产 品被存储在非瞬态的可读存储介质中，所述计算机程序产品被至少一个处理器执行以实现上述网络选择方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本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可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (41)

  1. 一种网络选择方法，应用于终端，所述方法包括：
    在终端的第一网络故障的情况下，从目标网络获取灾情DC信息；
    基于所述DC信息，进行网络选择；
    所述目标网络包括：第一网络和/或第二网络；
    所述第一网络是不存在于终端的禁用网络列表中的网络；
    所述第二网络是存在于终端的禁用网络列表中的网络。
  2. 根据权利要求1所述的网络选择方法，其中，所述在终端的第一网络故障的情况下，从目标网络获取DC信息，包括：
    在非接入层NAS获取的网络标识对应的网络均位于终端的禁用网络列表，且终端支持最小化服务中断MINT feature的情况下，从目标网络获取DC信息。
  3. 根据权利要求1或2所述的网络选择方法，其中，所述目标网络是第一网络的情况下，所述从目标网络获取DC信息包括：
    接收第一网络故障后发送的DC信息。
  4. 根据权利要求3所述的网络选择方法，其中，所述DC信息通过以下至少一项消息进行发送：
    NAS消息；和AS消息。
  5. 根据权利要求1或2所述的网络选择方法，其中，所述目标网络是第一网络和/或第二网络的情况下，所述从目标网络获取DC信息包括：
    接收第一网络和/或第二网络广播发送的DC信息。
  6. 根据权利要求5所述的网络选择方法，其中，所述DC信息通过以下至少一项消息进行发送：
    MIB；SIB1；和其他SIB信息。
  7. 根据权利要求1或2所述的网络选择方法，其中，所述目标网络是第二网络的情况下，所述从目标网络获取DC信息包括：
    向第二网络发送请求信息，所述请求信息用于请求DC信息。
  8. 根据权利要求7所述的网络选择方法，其中，所述请求信息通过以下 至少一项消息进行发送：
    NAS消息；和AS消息。
  9. 根据权利要求1或2所述的网络选择方法，其中，所述DC信息包括：
    第三网络的列表；
    其中，所述第三网络是支持为所述终端提供第一服务的网络。
  10. 根据权利要求9所述的网络选择方法，其中，目标网络是第二网络时，所述DC信息还包括：
    用于指示第二网络是否支持为所述终端提供第一服务的第一信息。
  11. 根据权利要求10所述的网络选择方法，其中，所述第一服务包括以下任一项或其组合：
    紧急业务；
    数据业务；
    语音业务；
    视频业务。
  12. 一种网络选择方法，应用于第一网络，所述方法包括：
    在终端的第一网络故障的情况下，向终端发送DC信息；
    所述DC信息用于终端在第一网络故障的情况下进行网络选择；
    所述第一网络是不存在于终端的禁用网络列表中的网络。
  13. 根据权利要求12所述的网络选择方法，其中，所述向终端发送DC信息，包括：
    向终端广播发送所述DC信息。
  14. 根据权利要求12或13所述的网络选择方法，其中，所述DC信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
  15. 根据权利要求12或13所述的网络选择方法，其中，所述DC信息包括：
    第三网络的列表；
    其中，所述第三网络是支持为所述终端提供第一服务的网络。
  16. 根据权利要求15所述的网络选择方法，其中，所述第一服务包括以下任一项或其组合：
    紧急业务；
    数据业务；
    语音业务；
    视频业务。
  17. 一种网络选择方法，应用于第二网络，所述方法包括：
    在终端的第一网络故障的情况下，向终端发送DC信息；
    所述DC信息用于终端在第一网络故障的情况下进行网络选择；
    所述第二网络是存在于终端的禁用网络列表中的网络。
  18. 根据权利要求17所述的网络选择方法，其中，所述向终端发送DC信息，包括：
    向终端广播发送所述DC信息。
  19. 根据权利要求18所述的网络选择方法，其中，所述DC信息通过以下至少一项消息进行发送：MIB；SIB1；和其他SIB信息。
  20. 根据权利要求17所述的网络选择方法，其中，所述向终端发送DC信息，包括：
    接收终端发送的请求信息；
    基于所述请求信息，向终端发送DC信息。
  21. 根据权利要求20所述的网络选择方法，其中，所述请求信息通过以下至少一项消息进行发送：NAS消息；和AS消息。
  22. 根据权利要求17至21任一项所述的网络选择方法，其中，所述DC信息包括：
    第三网络的列表；
    其中，所述第三网络是支持为所述终端提供第一服务的网络。
  23. 根据权利要求22所述的网络选择方法，其中，所述DC信息还包括：
    用于指示第二网络是否支持为所述终端提供第一服务的第一信息。
  24. 根据权利要求23所述的网络选择方法，其中，所述第一服务包括以下任一项或其组合：
    紧急业务；
    数据业务；
    语音业务；
    视频业务。
  25. 一种网络选择装置，应用于终端，所述装置包括：
    获取模块，用于在终端的第一网络故障的情况下，从目标网络获取灾情DC信息；
    选择模块，用于基于所述DC信息，进行网络选择；
    所述目标网络包括：第一网络和/或第二网络；
    所述第一网络是不存在于终端的禁用网络列表中的网络；
    所述第二网络是存在于终端的禁用网络列表中的网络。
  26. 根据权利要求25所述的网络选择装置，其中，所述获取模块用于：
    在非接入层NAS获取的网络标识对应的网络均位于终端的禁用网络列表，且终端支持最小化服务中断MINT feature的情况下，从目标网络获取DC信息。
  27. 根据权利要求25或26所述的网络选择装置，其中，所述目标网络是第一网络的情况下，所述获取模块用于：
    接收第一网络故障后发送的DC信息。
  28. 根据权利要求25或26所述的网络选择装置，其中，所述目标网络是第一网络和/或第二网络的情况下，所述获取模块用于：
    接收第一网络和/或第二网络广播发送的DC信息。
  29. 根据权利要求25或26所述的网络选择装置，其中，所述目标网络是第二网络的情况下，所述获取模块用于：
    向第二网络发送请求信息，所述请求信息用于请求DC信息。
  30. 一种网络选择装置，应用于第一网络，所述装置包括：
    第一发送模块，用于在终端的第一网络故障的情况下，向终端发送DC信息；
    所述DC信息用于终端在第一网络故障的情况下进行网络选择；
    所述第一网络是不存在于终端的禁用网络列表中的网络。
  31. 根据权利要求30所述的网络选择装置，其中，所述第一发送模块用于：
    向终端广播发送所述DC信息。
  32. 一种网络选择装置，应用于第二网络设备，所述装置包括：
    第二发送模块，用于在终端的第一网络故障的情况下，向终端发送DC信息；
    所述DC信息用于终端在第一网络故障的情况下进行网络选择；
    所述第二网络是存在于终端的禁用网络列表中的网络。
  33. 根据权利要求32所述的网络选择装置，其中，所述第二发送模块用于：
    向终端广播发送所述DC信息。
  34. 根据权利要求32所述的网络选择装置，其中，所述第二发送模块用于：
    接收终端发送的请求信息；
    基于所述请求信息，向终端发送DC信息。
  35. 一种终端，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，其中，所述程序或指令被所述处理器执行时实现如权利要求1至11任一项所述的网络选择方法的步骤。
  36. 一种第一网络设备，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，其中，所述程序或指令被所述处理器执行时实现如权利要求12至16任一项所述的网络选择方法的步骤。
  37. 一种第二网络设备，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，其中，所述程序或指令被所述处理器执行时实现如权利要求17至24任一项所述的网络选择方法的步骤。
  38. 一种可读存储介质，所述可读存储介质上存储程序或指令，其中，所述程序或指令被处理器执行时实现如权利要求1至24任一项所述的网络选择方法的步骤。
  39. 一种芯片，包括处理器和通信接口，所述通信接口和所述处理器耦合，其中，所述处理器用于运行程序或指令，实现如权利要求1至24任一项所述的网络选择方法的步骤。
  40. 一种计算机程序产品，所述计算机程序产品被存储在非瞬态的可读 存储介质中，其中，所述计算机程序产品被至少一个处理器执行以实现如权利要求1至24任一项所述的网络选择方法的步骤。
  41. 一种通信设备，被配置为执行如权利要求1至24任一项所述的网络选择方法的步骤。
PCT/CN2021/142061 2020-12-29 2021-12-28 网络选择方法、装置、设备及存储介质 WO2022143657A1 (zh)

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