WO2022016551A1 - 一种终端设备接入控制方法及装置 - Google Patents

一种终端设备接入控制方法及装置 Download PDF

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Publication number
WO2022016551A1
WO2022016551A1 PCT/CN2020/104602 CN2020104602W WO2022016551A1 WO 2022016551 A1 WO2022016551 A1 WO 2022016551A1 CN 2020104602 W CN2020104602 W CN 2020104602W WO 2022016551 A1 WO2022016551 A1 WO 2022016551A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
plmn
network device
access network
release
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Application number
PCT/CN2020/104602
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English (en)
French (fr)
Inventor
吴烨丹
耿婷婷
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20945721.7A priority Critical patent/EP4178265A4/en
Priority to CN202080102994.1A priority patent/CN115804152A/zh
Priority to PCT/CN2020/104602 priority patent/WO2022016551A1/zh
Publication of WO2022016551A1 publication Critical patent/WO2022016551A1/zh
Priority to US18/156,892 priority patent/US20230164685A1/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
    • H04W48/04—Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
    • 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
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a method and apparatus for access control of terminal equipment.
  • a public land mobile network is a network established and operated by the government or its approved operators for the purpose of providing land mobile communication services to the public.
  • User equipment UE
  • UE User equipment
  • PLMN User equipment
  • PLMN In general terrestrial networks, the radiation range of base stations is limited. Under normal circumstances, UEs will not access base stations in other countries. Therefore, the various procedures of the communication protocol standard do not restrict UEs from selecting PLMN access in non-local countries.
  • NTN non-terrestrial network
  • PLMN ID PLMN identification
  • the present application provides a terminal equipment access control method and device, which are used to solve the problem that in NTN, the PLMN selected by the terminal equipment may not be the PLMN of the country where the terminal equipment is located, so it is difficult to communicate normally.
  • the present application provides a terminal device access control method.
  • the method can be applied to an access network device, or a chip, or a chipset, or a functional module in the chip that executes the method, and so on.
  • the method includes: the access network device receives PLMN information, where the PLMN information is used to indicate the first PLMN selected by the terminal device.
  • the access network device acquires the location information of the terminal device, and determines whether to allow the terminal device to access the first PLMN according to the location information and country information corresponding to the first PLMN.
  • the access network device releases or switches cells that may access abnormally by judging whether the location information of the terminal device is consistent with the country information represented by the selected PLMN.
  • the (radio resource control, RRC) access phase prevents abnormal access of terminal equipment.
  • the access network device when the access network device acquires the location information of the terminal device, it can locate the terminal device to obtain the location information.
  • the access network device can obtain the location information of the terminal device by locating the terminal device, so as to judge whether the PLMN selected by the terminal device is suitable.
  • the access network device when the access network device acquires the location information of the terminal device, it can also receive the location information sent by the terminal device.
  • the terminal equipment reports its own location information, so that the access network equipment can obtain the location information of the terminal equipment, so as to judge whether the PLMN selected by the terminal equipment is suitable.
  • the access network device when the access network device acquires the location information of the terminal device, it can also first receive the location information sent by the terminal device, and then locate the terminal device. In the above manner, the access network device can locate the terminal device when the location information reported by the terminal device is inaccurate, or when the location information reported by the terminal device is not trusted, so as to obtain relatively accurate location information.
  • the location information of the terminal device may be global positioning system (global positioning system, GPS) location information of the terminal device, such as longitude and latitude information.
  • GPS global positioning system
  • the location information of the terminal equipment may also be information of the virtual cell where the terminal equipment is located.
  • the virtual cell can be large or small, it is relatively ambiguous location information, so the privacy of the terminal device can be protected in this manner.
  • the location information of the terminal device may also be country information of the country where the terminal device is located.
  • the country information is in a relatively large range, so the privacy of the terminal device can be protected by this method.
  • the access network device determines whether to allow the terminal device to access the first PLMN according to the location information and the country information corresponding to the first PLMN, when the country information corresponding to the location information and the country information corresponding to the first PLMN When inconsistent, the access network device determines that the terminal device is not allowed to access the first PLMN. Or, when the country information corresponding to the location information is consistent with the country information corresponding to the first PLMN, the access network device determines that the terminal device is allowed to access the first PLMN. In the above manner, the terminal equipment can be prevented from accessing a PLMN that is not the country where it is currently located.
  • the country information corresponding to the location information is inconsistent with the country information corresponding to the first PLMN, which may mean that the country corresponding to the location information is different from the country corresponding to the first PLMN.
  • the country information corresponding to the location information is inconsistent with the country information corresponding to the first PLMN. It may also mean that the country corresponding to the location information is not the same as the country corresponding to the first PLMN, and the location corresponding to the location information is different from the country corresponding to the first PLMN.
  • the distance between the national borders of a country corresponding to a PLMN is greater than the distance threshold.
  • the country information corresponding to the location information is consistent with the country information corresponding to the first PLMN, which may mean that the country corresponding to the location information is the same as the country corresponding to the first PLMN.
  • the access network device may also send an RRC release message to the terminal device, where the RRC release message is used to release the RRC connection of the terminal device .
  • the RRC release message carries at least one of the following information: a release reason, a PLMN identity that the terminal device is allowed to select, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the access network device after the access network device determines that the terminal device is not allowed to access the first PLMN, the access network device switches the terminal device to the target cell according to the location information of the terminal device, and at least one PLMN identifier of the target cell
  • the corresponding country is the same as the country corresponding to the location information of the terminal device.
  • the access network device sends the handover reason to the access network device corresponding to the target cell or the AMF entity connected to the access network device corresponding to the target cell, and the handover reason is that the first PLMN is not where the terminal device is located National PLMN.
  • the present application provides a terminal device access control method, and the method can be applied to an access network device, or a chip, or a chipset, or a functional module in a chip that executes the method, and so on.
  • the method includes: the access network device receives PLMN information, where the PLMN information is used to indicate the first PLMN selected by the terminal device.
  • the access network device acquires the location information of the terminal device, and determines whether to allow the terminal device to access the first PLMN according to the location information and country information corresponding to the first PLMN.
  • the terminal device when the terminal device initially accesses the access network device, it may first allow the terminal device to access, and by determining whether the location information of the terminal device is consistent with the country information represented by the selected PLMN, the possible abnormal The accessed terminal equipment performs release or cell handover, so that abnormal access of the terminal equipment can be prevented in the RRC access phase.
  • the access network device can also inform the terminal device of the PLMN that can be selected, so that the terminal device can be prevented from selecting an inappropriate PLMN again, thereby helping to improve the speed of PLMN selection.
  • the access network device when the access network device acquires the location information of the terminal device, it can locate the terminal device to obtain the location information.
  • the access network device can obtain the location information of the terminal device by locating the terminal device, so as to judge whether the PLMN selected by the terminal device is suitable.
  • the access network device when the access network device acquires the location information of the terminal device, it can also receive the location information sent by the terminal device.
  • the terminal equipment reports its own location information, so that the access network equipment can obtain the location information of the terminal equipment, so as to judge whether the PLMN selected by the terminal equipment is suitable.
  • the access network device when the access network device acquires the location information of the terminal device, it can also first receive the location information sent by the terminal device, and then locate the terminal device. In the above manner, the access network device can locate the terminal device when the location information reported by the terminal device is inaccurate, or when the location information reported by the terminal device is not trusted, so as to obtain relatively accurate location information.
  • the location information of the terminal device may be GPS location information of the terminal device, such as longitude and latitude information.
  • the access network device can more accurately determine whether the terminal device is within the territory of the country corresponding to the selected PLMN.
  • the location information of the terminal equipment may also be information of the virtual cell where the terminal equipment is located.
  • the virtual cell can be large or small, it is relatively ambiguous location information, so the privacy of the terminal device can be protected in this manner.
  • the location information of the terminal device may also be country information of the country where the terminal device is located.
  • the country information is in a relatively large range, so the privacy of the terminal device can be protected by this method.
  • the access network device determines whether to allow the terminal device to access the first PLMN according to the location information and the country information corresponding to the first PLMN, when the country information corresponding to the location information and the country information corresponding to the first PLMN When inconsistent, the access network device determines that the terminal device is not allowed to access the first PLMN. Or, when the country information corresponding to the location information is consistent with the country information corresponding to the first PLMN, the access network device determines that the terminal device is allowed to access the first PLMN. In the above manner, the terminal equipment can be prevented from accessing a PLMN that is not the country where it is currently located.
  • the country information corresponding to the location information is inconsistent with the country information corresponding to the first PLMN, which may mean that the country corresponding to the location information is different from the country corresponding to the first PLMN.
  • the country information corresponding to the location information is inconsistent with the country information corresponding to the first PLMN. It may also mean that the country corresponding to the location information is not the same as the country corresponding to the first PLMN, and the location corresponding to the location information is different from the country corresponding to the first PLMN.
  • the distance between the national borders of a country corresponding to a PLMN is greater than the distance threshold.
  • the country information corresponding to the location information is consistent with the country information corresponding to the first PLMN, which may mean that the country corresponding to the location information is the same as the country corresponding to the first PLMN.
  • the access network device After the access network device determines that the terminal device is not allowed to access the first PLMN, the access network device sends an RRC release request message to the AMF entity, where the RRC release request message is used to request the AMF entity to release the terminal device .
  • the initial access terminal equipment it can be allowed to access the network first, and when the access network equipment determines that the terminal equipment has selected an inappropriate PLMN, the AMF entity is triggered to initiate a release process.
  • the RRC release request message carries at least one of the following information: a release reason, an identifier of a PLMN that the terminal device is allowed to select, and the release reason the first PLMN is not a PLMN of the country where the terminal device is located.
  • the network device receives the context release command sent by the AMF entity, where the context release command is used to instruct the network device to release the RRC connection of the terminal device, and
  • the context release command carries the release reason, and the release reason is that the first PLMN is not the PLMN of the country where the terminal device is located;
  • the access network device sends an RRC release message to the terminal device, and the release information carries the PLMN identifier that the terminal device is allowed to select.
  • the access network device can restrict the terminal device to comply with the national security regulations and regulatory requirements by releasing the abnormally connected terminal device.
  • the access network device after the access network device receives the context release command, it can also switch the terminal device to the target cell according to the location information of the terminal device. At least one PLMN of the target cell identifies the country corresponding to the terminal device. The location information corresponds to the same country. In the above manner, the communication interruption of the terminal device can be reduced, thereby improving the user experience.
  • the access network device sends the handover reason to the access network device corresponding to the target cell or the AMF entity connected to the access network device corresponding to the target cell, and the handover reason is that the first PLMN is not where the terminal device is located National PLMN.
  • the present application provides a terminal device access control method, and the method can be applied to an AMF entity, or a chip, or a chipset, or a functional module in the chip that executes the method, and so on.
  • the AMF entity receives an RRC release request message sent by an access network device, the RRC release request message is used to request the AMF entity to release the terminal device, and the RRC release request message carries at least one of the following information. : release reason, the PLMN identifier that the terminal device is allowed to select, and the first PLMN of the release reason is not the PLMN of the country where the terminal device is located.
  • the AMF entity sends a context release command to the access network device.
  • the context release command is used to instruct the network device to release the RRC connection of the terminal device, and the context release command carries the release reason, which is that the first PLMN is not the PLMN of the country where the terminal device is located.
  • the terminal device when the terminal device initially accesses the access network device, it may first allow the terminal device to access, and by determining whether the location information of the terminal device is consistent with the country information represented by the selected PLMN, the possible abnormal The accessed terminal equipment performs release or cell handover, so that abnormal access of the terminal equipment can be prevented in the RRC access phase.
  • the present application provides a terminal device access control method, and the method can be applied to an AMF entity, or a chip, or a chipset, or a functional module in the chip that executes the method, and so on.
  • the method includes: the AMF entity receives PLMN information, where the PLMN information is used to indicate the first PLMN selected by the terminal device.
  • the AMF entity acquires the location information of the terminal device, and determines whether to allow the terminal device to access the first PLMN according to the location information and the country information corresponding to the first PLMN.
  • the terminal equipment may first allow the terminal equipment to access during initial access.
  • the terminal equipment performs release or cell handover, so that abnormal access of the terminal equipment can be prevented in the RRC access phase.
  • the AMF entity when it obtains the location information of the terminal device, it can receive the location information sent by the access network device.
  • the location information is sent by the terminal device to the access network device, or the location information is the access network device.
  • the device is obtained by locating the terminal device.
  • the AMF entity when it obtains the location information of the terminal equipment, it can receive the NAS signaling transparently transmitted by the access network equipment, the NAS signaling carries the location information of the terminal equipment, and the NAS signaling is the terminal equipment Sent to the access network device.
  • the privacy of the terminal device can be protected.
  • the location information of the terminal device may be GPS location information of the terminal device, such as longitude and latitude information.
  • the access network device can more accurately determine whether the terminal device is within the territory of the country corresponding to the selected PLMN.
  • the location information of the terminal equipment may also be information of the virtual cell where the terminal equipment is located.
  • the virtual cell can be large or small, it is relatively ambiguous location information, so the privacy of the terminal device can be protected in this manner.
  • the location information of the terminal device may also be country information of the country where the terminal device is located.
  • the country information is in a relatively large range, so the privacy of the terminal device can be protected by this method.
  • the AMF entity determines whether to allow the terminal device to access the first PLMN according to the location information and the country information corresponding to the first PLMN
  • the AMF entity determines that the terminal device is not allowed to access the first PLMN.
  • the AMF entity determines that the terminal device is allowed to access the first PLMN. In the above manner, the terminal equipment can be prevented from accessing a PLMN that is not the country where it is currently located.
  • the country information corresponding to the location information is inconsistent with the country information corresponding to the first PLMN, which may mean that the country corresponding to the location information is different from the country corresponding to the first PLMN.
  • the country information corresponding to the location information is inconsistent with the country information corresponding to the first PLMN. It may also mean that the country corresponding to the location information is not the same as the country corresponding to the first PLMN, and the location corresponding to the location information is different from the country corresponding to the first PLMN.
  • the distance between the national borders of a country corresponding to a PLMN is greater than the distance threshold.
  • the country information corresponding to the location information is consistent with the country information corresponding to the first PLMN, which may mean that the country corresponding to the location information is the same as the country corresponding to the first PLMN.
  • the AMF entity after the AMF entity determines that the terminal device is not allowed to access the first PLMN, the AMF entity sends a context release command to the access network device, where the context release command is used to instruct the access network device to release the terminal device.
  • the AMF entity can constrain the terminal equipment to comply with national security regulations and regulatory requirements by releasing the abnormally connected terminal equipment.
  • the context release command carries at least one item of the following information: a release reason, a PLMN identifier that the terminal device is allowed to select, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the access network device can restrict the access behavior of the terminal device according to the release reason and the PLMN identity that the terminal device allows to select.
  • the AMF entity updates the mobility restriction list of the terminal device, and sends the updated mobility restriction list to the access network device.
  • the latter mobility restriction list includes at least one item of the following information: PLMN identities that the terminal device is allowed to select, and PLMN identities that the terminal device is not allowed to select.
  • the present application provides a terminal device access control method, and the method can be applied to access network devices, or chips, or chipsets, or functional modules in chips that execute the method, and so on.
  • the method includes: the access network device receives a context release command sent by the AMF entity, the context release command is used to instruct the access network device to release the terminal device, and the context release command carries at least one of the following information.
  • the release reason the PLMN identifier that the terminal equipment allows to select, the release reason is that the first PLMN selected by the terminal equipment is not the PLMN of the country where the terminal equipment is located; the access network equipment switches the terminal equipment to the target cell according to the context release command, and the target cell's At least one PLMN identity is a PLMN identity that the terminal device is allowed to select.
  • the AMF entity can restrict the terminal equipment to comply with national security regulations and regulatory requirements by releasing the abnormally accessed terminal equipment. And by carrying the release reason and the PLMN identifier allowed to be selected by the terminal device in the context release command, the access network device can restrict the access behavior of the terminal device according to the release reason and the PLMN identifier allowed to be selected by the terminal device.
  • the access network device sends a handover reason to the access network device or AMF entity corresponding to the target cell, and the handover reason is that the first PLMN is not the PLMN of the country where the terminal device is located.
  • the present application provides a terminal device access control method, and the method can be applied to an access network device, or a chip, or a chipset, or a functional module in a chip that executes the method, and so on.
  • the method includes: the access network device receives the mobility restriction list sent by the AMF, and switches the terminal device to the target cell or releases the terminal device according to the mobility restriction list, and the mobility restriction list includes the following information At least one of: a public land mobile network PLMN identity that the terminal device is allowed to select, a PLMN identity that the terminal device is not allowed to select, and at least one PLMN identity of the target cell is a PLMN identity that the terminal device allows to select.
  • the access network device can switch the terminal device according to the updated mobility restriction list, so that the communication interruption of the terminal device can be reduced, and the user experience can be improved.
  • the access network device switches the terminal device to the target cell according to the mobility restriction list, including: the access network device sends the handover to the access network device or AMF entity corresponding to the target cell according to the mobility restriction list
  • the handover request is used to request handover of the terminal device to the target cell.
  • the handover request carries a handover reason, and the handover reason is that the PLMN selected by the terminal equipment is not the PLMN of the country where the terminal equipment is located.
  • the access network device releases the terminal device according to the mobility restriction list, including: the access network device sends an RRC release message to the terminal device according to the mobility restriction list, where the RRC release message is used to release the RRC of the terminal device connect.
  • the RRC release message carries at least one of the following information: a release reason, a PLMN identifier allowed to be selected by the terminal device, and the release reason is that the PLMN selected by the terminal device is not a PLMN of the country where the terminal device is located.
  • the terminal equipment can be prevented from selecting an inappropriate PLMN when the RRC establishment or RRC recovery is initiated again, thereby improving the access speed and improving the user experience. experience.
  • the present application provides a terminal device access control method, and the method can be applied to a terminal device, or a chip, or a chipset, or a functional module in a chip that executes the method, and so on.
  • the method includes: the terminal device sends PLMN information to the access network device, where the PLMN information is used to indicate the PLMN selected by the terminal device; the terminal device receives an RRC release message sent by the access network device, and the RRC release message is used for Release the RRC connection of the terminal device, and the RRC release message carries at least one of the following information: the release reason, the PLMN identifier that the terminal device is allowed to select, and the release reason is that the PLMN selected by the terminal device is not the PLMN of the country where the terminal device is located.
  • the access network device when a terminal device selects an inappropriate PLMN, the access network device can release the terminal device, and tell the terminal device which PLMN IDs can be selected by the terminal device at the current location, so that the terminal device can be prevented from secondary An inappropriate PLMN is selected when initiating RRC establishment or RRC recovery again, thereby improving access speed and user experience.
  • the terminal device after the terminal device receives the RRC release message sent by the access network device, the terminal device reselects the PLMN according to the PLMN identifier that the terminal device allows to select.
  • the terminal device reselects the PLMN according to the PLMN identifier that is allowed to be selected, which can reduce the probability of selecting an inappropriate PLMN.
  • an embodiment of the present application provides a communication apparatus, and the apparatus may be an access network device or a chip in the access network device.
  • the apparatus may include a processing unit, a transceiving unit and a receiving unit. It should be understood that, the sending unit and the receiving unit here may also be transceiver units.
  • the processing unit may be a processor, and the sending unit and the receiving unit may be transceivers;
  • the communication device may further include a storage unit, and the storage unit may be a memory;
  • the storage unit is used for storing an instruction, the processing unit executes the instruction stored in the storage unit, so that the access network device executes the method in the first aspect or any possible design of the first aspect, or causes the access network device to execute the second aspect Aspect or the method in any possible design of the second aspect, or, so that the access network device executes the sixth aspect or the method in any possible design of the sixth aspect, or, so that the access network device executes The fifth aspect or the method in any possible design of the fifth aspect.
  • the processing unit may be a processor, the sending unit and the receiving unit may be input/output interfaces, pins or circuits, etc.; the processing unit executes the instructions stored in the storage unit , so that the chip performs the method in the first aspect or any possible design of the first aspect, or, so that the chip performs the method in the second aspect or any possible design of the second aspect, or, with The chip is made to perform the method in the sixth aspect or any possible design of the sixth aspect, or the chip is made to perform the method in the fifth aspect or any possible design of the fifth aspect.
  • the storage unit is used to store instructions, and the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the terminal device located outside the chip (for example, a read-only memory, random access memory, etc.).
  • an embodiment of the present application provides a communication device, where the device may be an AMF entity or a chip in the AMF entity.
  • the apparatus may include a processing unit, a transceiving unit and a receiving unit. It should be understood that, the sending unit and the receiving unit here may also be transceiver units.
  • the processing unit may be a processor, and the sending unit and the receiving unit may be transceivers;
  • the communication device may further include a storage unit, which may be a memory; the storage unit is used for storing instructions , the processing unit executes the instructions stored in the storage unit, so that the AMF entity executes the method in the third aspect or any possible design of the third aspect, or, so that the AMF entity executes the fourth aspect or any of the fourth aspect A possible method in design.
  • the processing unit may be a processor, the sending unit and the receiving unit may be input/output interfaces, pins or circuits, etc.; the processing unit executes the instructions stored in the storage unit to
  • the chip is caused to perform the method in the third aspect or any possible design of the third aspect, or the chip is caused to perform the method in the fourth aspect or any possible design of the fourth aspect.
  • the storage unit is used to store instructions, and the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the terminal device located outside the chip (for example, a read-only memory, random access memory, etc.).
  • an embodiment of the present application provides a communication apparatus, where the apparatus may be a terminal device or a chip in the terminal device.
  • the apparatus may include a processing unit, a transceiving unit and a receiving unit. It should be understood that, the sending unit and the receiving unit here may also be transceiver units.
  • the processing unit may be a processor, and the transmitting unit and the receiving unit may be transceivers;
  • the communication device may further include a storage unit, which may be a memory; the storage unit is used for storing instructions , the processing unit executes the instructions stored in the storage unit, so that the terminal device executes the method in the seventh aspect or any possible design of the seventh aspect.
  • the processing unit may be a processor, and the sending unit and the receiving unit may be input/output interfaces, pins or circuits, etc.; the processing unit executes the instructions stored in the storage unit to The chip is made to perform the method of the seventh aspect or any possible design of the seventh aspect.
  • the storage unit is used to store instructions, and the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the terminal device located outside the chip (for example, a read-only memory, random access memory, etc.).
  • an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is run on a computer, the computer is made to execute the above-mentioned first to seventh aspects The method of any of the aspects.
  • embodiments of the present application further provide a computer program product including a program, which, when run on a computer, enables the computer to execute the method of any one of the first to seventh aspects above.
  • a communication apparatus including: a processor, a communication interface, and a memory.
  • the communication interface is used to transfer information, and/or messages, and/or data between the device and other devices.
  • the memory is used to store computer-executable instructions, and when the apparatus is running, the processor executes the computer-executable instructions stored in the memory to cause the apparatus to perform the first aspect and any possible designs thereof, the second aspect, and The method of any possible design thereof, the fifth aspect and the method of any possible design thereof, the sixth aspect and the method of any possible design thereof.
  • a communication apparatus including: a processor, a communication interface, and a memory.
  • the communication interface is used to transfer information, and/or messages, and/or data between the device and other devices.
  • the memory is used to store computer-executable instructions, and when the apparatus operates, the processor executes the computer-executable instructions stored in the memory, so that the apparatus performs the third aspect and any possible designs thereof, the fourth aspect, and It's any possible design method.
  • a communication apparatus including: a processor, a communication interface, and a memory.
  • the communication interface is used to transfer information, and/or messages, and/or data between the device and other devices.
  • the memory is used to store computer-executable instructions, and when the apparatus is running, the processor executes the computer-executable instructions stored in the memory, so that the apparatus executes the seventh aspect and any possible designs thereof.
  • a sixteenth aspect a chip provided by an embodiment of the present application, the chip is coupled with a memory, and performs the first aspect and any possible design thereof, the second aspect and any possible design method thereof, and the fifth aspect. Aspect and method of any possible design thereof, and method of the sixth aspect and any possible design thereof.
  • an embodiment of the present application provides a chip, which is coupled to a memory, and implements the third aspect and any possible design thereof, and the fourth aspect and any possible design method thereof.
  • an embodiment of the present application provides a chip, which is coupled to a memory, and implements the seventh aspect and any possible designs thereof.
  • an embodiment of the present application provides a chip, including a communication interface and at least one processor, where the processor operates to execute the first aspect and any possible design thereof, the second aspect and any possible design thereof The design method of the fifth aspect and any possible design method thereof, the sixth aspect and any possible design method thereof.
  • an embodiment of the present application provides a chip, including a communication interface and at least one processor, where the processor operates to execute the third aspect and any possible design thereof, the fourth aspect and any possible design thereof method of design.
  • an embodiment of the present application provides a chip, including a communication interface and at least one processor, where the processor operates to execute the seventh aspect and any possible designs thereof.
  • an embodiment of the present application further provides a communication system, including the access network device described in the first aspect and the terminal device described in the seventh aspect.
  • an embodiment of the present application further provides a communication system, including the access network device described in the second aspect and the AMF entity described in the third aspect, and may also include the terminal device described in the seventh aspect. .
  • an embodiment of the present application further provides a communication system, including the AMF entity described in the fourth aspect and the access network device described in the fifth aspect, and may also include the terminal device described in the seventh aspect. .
  • an embodiment of the present application further provides a communication system, including the AMF entity described in the fourth aspect and the access network device described in the sixth aspect, and may also include the terminal device described in the seventh aspect. .
  • Coupled in the embodiments of the present application means that two components are directly or indirectly combined with each other.
  • FIG. 1 is a schematic diagram of a protocol stack provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a satellite provided in an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of an access network device according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of an NTN application scenario provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another NTN application scenario provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of another NTN application scenario provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of an interface provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another NTN application scenario provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another NTN application scenario provided by an embodiment of the present application.
  • FIG. 10 is a schematic flowchart of a terminal device access control method provided by an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a virtual cell according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a terminal device access process according to an embodiment of the present application.
  • FIG. 13 is a schematic flowchart of a terminal device access control method provided by an embodiment of the present application.
  • FIG. 14 is a schematic diagram of a terminal device access process according to an embodiment of the present application.
  • 15 is a schematic flowchart of a terminal device access control method provided by an embodiment of the present application.
  • 16 is a schematic diagram of a terminal device access process according to an embodiment of the present application.
  • FIG. 17 is a schematic diagram of a terminal device access process according to an embodiment of the present application.
  • FIG. 18 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 19 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • FIG. 20 is a schematic structural diagram of an access network device according to an embodiment of the present application.
  • FIG. 21 is a schematic structural diagram of a terminal device according to an embodiment of the application.
  • Non-access stratum and access stratum (access stratum, AS)
  • NAS is a signaling channel between the UE and the AMF, and the specific process may be that the UE sends a NAS message to the base station, the base station transparently transmits the NAS message to the AMF, and the base station does not parse the NAS message during the transparent transmission process.
  • NAS is mainly responsible for some management functions, such as PLMN selection, manual selection, access control, registration, subscription information, etc.
  • the specific process can be coordinated with other protocol layers (such as AS).
  • AS refers to a protocol layer other than the NAS layer, which can include radio resource control (RRC), packet data convergence protocol (PDCP), radio link control (radio link control, RLC), Medium access control (MAC), physical layer (PHY), AS is mainly responsible for switching, encryption, data retransmission, sorting, sending and other functions.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • RLC radio link control
  • MAC Medium access control
  • PHY physical layer
  • AS is mainly responsible for switching, encryption, data retransmission, sorting, sending and other functions.
  • PLMN is generally used to provide network services for terminal equipment in daily life.
  • PLMN is a network established and operated by the government or its approved operators for the purpose of providing land mobile communication services to the public.
  • Different PLMN networks can be distinguished by different PLMN identifications (IDs).
  • IDs PLMN identifications
  • the PLMN identity is composed of a mobile country code (mobile contrary code, MCC) and a mobile network number (mobile net code, MNC).
  • MCC mobile country code
  • MNC mobile network number
  • MNC mobile network number
  • MCC mobile country code
  • MNC mobile network number
  • MNC mobile network number
  • PLMN selection can be as follows:
  • the AS of the UE scans the radio frequency (RF) channels (channels) of all NR frequency bands (bands) according to its own capability to find available PLMNs.
  • the UE will find the cell with the best RSRP in each frequency point and then read the system information block 1 (SIB1) of the cell to obtain the PLMN ID.
  • SIB1 system information block 1
  • the AS of the UE reports a PLMN list (list) to the NAS of the UE, and the PLMN list includes the PLMN ID obtained by the AS of the UE.
  • the NAS of the UE after receiving the PLMN list reported by the AS of the UE, the NAS of the UE will select one of the PLMN IDs as the PLMN used by the UE.
  • the searched PLMN can be: registered PLMN (registered PLMN, RPLMN), RPLMN is the PLMN registered before the UE shuts down or disconnects from the network; equivalent PLMN (equivalent PLMN, EPLMN), EPLMN is the current selection of the UE
  • the PLMN with the same priority of the PLMN the home PLMN (home PLMN, HPLMN), the identity of the HPLMN is stored in the subscriber identity module (SIM) card of the mobile phone, and each SIM card has only one HPLMN, which is burned in when it leaves the factory.
  • Equivalent HPLMN equivalent HPLMN, EHPLMN
  • NTN communication may also be referred to as satellite communication.
  • the architecture of satellite communication is divided into two categories, one is the transparent forwarding (transparent) architecture, at this time the satellite only acts as a relay or amplifier, and can do radio frequency filtering, amplification, etc., to regenerate the signal; the second is regenerative (regenerative) architecture.
  • ) architecture at this time the satellite can be a new generation of node B (generated node B, gNB), distributed unit (distributed unit, DU), relay, the relay here is different from the relay in the first category, and it is no longer a simple relay, which also has a signal processing function, is similar to an integrated access and backhaul (IAB) node or other relay nodes.
  • IAB integrated access and backhaul
  • NTN communication provides seamless coverage for terminal equipment by deploying the functions of access network equipment or part of the access network equipment on non-terrestrial equipment (such as high-altitude platforms or satellites, etc.), because non-terrestrial equipment is less affected by natural disasters , which can improve the reliability of the communication system.
  • the present application will take the NTN communication system in which the access network equipment is deployed on the satellite as an example for description later in the present application.
  • this application will hereinafter replace the description of "access network equipment on satellite” with "satellite”, and replace the description of "NTN communication" with "satellite communication”. That is, the communication between the terminal device and the satellite referred to later in this application actually refers to the communication between the terminal device and the access network device on the satellite.
  • this application is a unified description, which will not be repeated later.
  • the satellite system can be divided into highly elliptical orbiting (HEO) satellites, geostationary earth orbit (GEO) satellites, medium earth orbit (MEO) satellites and Low-earth orbit (LEO) satellites, as shown in Figure 2.
  • HEO highly elliptical orbiting
  • GEO geostationary earth orbit
  • MEO medium earth orbit
  • LEO Low-earth orbit
  • the NTN system may also include aerial network equipment such as a high altitude platform station (HAPS) communication system, and the network equipment involved in the present invention is not limited to the above examples.
  • HAPS high altitude platform station
  • the network elements involved in the embodiments of this application include network equipment and terminal equipment.
  • the network device may be an access network device or a core network device.
  • the core network device may be a functional network element in the core network, for example, may be an access and mobility management function.
  • the access and mobility management function can be used to manage the access control and mobility of the terminal equipment. In practical applications, it includes the mobility management entity (mobility management entity, MME) in the network framework in LTE.
  • MME mobility management entity
  • the mobility management function is added, and the access management function is added. Specifically, it can be responsible for the registration of the terminal equipment, mobility management, tracking area update process, reachability detection, session management function network element selection, and mobility state transition management. Wait.
  • the access and mobility management functions may be AMF network elements.
  • future communications such as 6G
  • the access and mobility management functions may still be AMF network elements, or have other names, which are not limited in this application.
  • An access network device is an entity on the network side for transmitting or receiving signals, such as a new generation base station (generation Node B, gNodeB).
  • An access network device may be a device used to communicate with a mobile device.
  • the access network device may be an access point (AP) in a wireless local area network (wireless local area networks, WLAN), or an evolved base station (evolutional Node B, eNB) in long term evolution (long term evolution, LTE).
  • an access network device provides services for a cell, and a terminal device communicates with the access network device through transmission resources (eg, frequency domain resources, or spectrum resources) used by the cell.
  • the access network device in this embodiment of the present application may refer to a central unit (central unit, CU) or a DU.
  • the access network device may also be composed of CU and DU, for example, as shown in FIG. 3 .
  • the CU and the DU may be physically separated, or may be deployed together, which is not specifically limited in this embodiment of the present application.
  • One CU can be connected to one DU, or multiple DUs can share one CU, which can save costs and facilitate network expansion.
  • the segmentation of CU and DU can be divided according to the protocol stack, one of the possible ways is to aggregate the radio resource control (radio resource control, RRC), service data adaptation protocol (service data adaptation protocol, SDAP) and packet data.
  • RRC radio resource control
  • SDAP service data adaptation protocol
  • the protocol (packet data convergence protocol, PDCP) layer is deployed in the CU, and the rest of the radio link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical layer are deployed in the DU.
  • the present invention does not completely limit the foregoing protocol stack segmentation mode, and other segmentation modes are also possible.
  • the CU and DU are connected through the F1 interface.
  • CU represents the gNB is connected to the core network through the Ng interface.
  • the access network device in this embodiment of the present application may refer to a centralized unit control plane (CU-CP) node or a centralized unit user plane (CU-UP) node, or the network device may also be a CU-CP and a CU- UP.
  • the CU-CP is responsible for the control plane function, mainly including RRC and PDCP-C.
  • PDCP-C is mainly responsible for encryption and decryption of control plane data, integrity protection, and data transmission.
  • CU-UP is responsible for user plane functions, mainly including SDAP and PDCP-U.
  • the SDAP is mainly responsible for processing the data of the core network and mapping the flow to the bearer.
  • PDCP-U is mainly responsible for data plane encryption and decryption, integrity protection, header compression, serial number maintenance, data transmission, etc.
  • the CU-CP and CU-UP are connected through the E1 interface.
  • CU-CP represents that the gNB is connected to the core network through the Ng interface. Connect via F1-C (control plane) and DU.
  • CU-UP is connected through F1-U (user plane) and DU.
  • PDCP-C is also in CU-UP.
  • the access network device mentioned in the embodiments of this application may be a device including a CU, or a DU, or a device including a CU and a DU, or a control plane CU node (CU-CP node) and a user plane CU node (CU-UP node) And the equipment of the DU node.
  • the access network equipment may be other apparatuses that provide wireless communication functions for the terminal equipment.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the access network device.
  • a device that provides a wireless communication function for a terminal device is referred to as an access network device.
  • the terminal device may be a wireless terminal device capable of receiving access network device scheduling and indication information.
  • the wireless terminal device may be a device that provides voice and/or data connectivity to users, or a handheld device with wireless connection function, or a Other processing equipment for wireless modems.
  • a wireless end device may communicate with one or more core networks or the Internet via a radio access network (eg, radio access network, RAN), and the wireless end device may be a mobile end device, such as a mobile phone (or "cellular" phone) , mobile phone (mobile phone), computer and data card, for example, may be portable, pocket, hand-held, computer built-in or vehicle mounted mobile devices that exchange language and/or data with the radio access network.
  • Wireless terminal equipment may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point ( access point (AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), subscriber station (SS), user terminal equipment (customer premises equipment, CPE), terminal (terminal), user equipment (user equipment, UE), mobile terminal (mobile terminal, MT), etc.
  • PCS personal communications service
  • SIP Session Initiation Protocol
  • WLL wireless local loop
  • PDAs personal digital assistants
  • Wi-Pad tablet Computer
  • Wireless terminal equipment may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point ( access point (AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), subscriber station (SS), user terminal equipment (custom
  • the wireless terminal device can also be a wearable device and a next-generation communication system, for example, a terminal device in a 5G network or a terminal device in a future evolved PLMN network, a terminal device in an NR communication system, and the like.
  • a next-generation communication system for example, a terminal device in a 5G network or a terminal device in a future evolved PLMN network, a terminal device in an NR communication system, and the like.
  • the embodiments of the present application may also be applicable to other future-oriented communication technologies.
  • the network architecture and service scenarios described in this application are for the purpose of illustrating the technical solutions of this application more clearly, and do not constitute a limitation on the technical solutions provided by this application. appears, the technical solutions provided in this application are also applicable to similar technical problems.
  • the communication system may be: a fifth generation (The 5th Generation, 5G) communication system, an LTE communication system, and the like.
  • 5G Fifth Generation
  • LTE Long Term Evolution
  • the embodiments of the present application can be applied to the fourth generation (4G) system, 5G system, NTN system, vehicle to everything (V2X), long-term evolution-vehicle (LTE-vehicle, LTE) system -V), Vehicle to Vehicle (V2V), Internet of Vehicles, Machine Type Communications (MTC), Internet of Things (IoT), Long Term Evolution-Machine to Machine (LTE-machine to) machine, LTE-M), machine to machine (M2M), Internet of Things, or future mobile communication systems.
  • 4G fourth generation
  • 5G system NTN system
  • V2X vehicle to everything
  • LTE-vehicle long-term evolution-vehicle
  • LTE-vehicle Long-term evolution-vehicle
  • LTE Long-term evolution-vehicle
  • LTE Long-term evolution-vehicle
  • LTE Long-term evolution-vehicle
  • LTE Long-term evolution-vehicle
  • LTE Long-term evolution-vehi
  • the satellite may act as a base station to establish an N2 or Ng connection with an AMF entity in the core network to provide wireless access services for terminal equipment.
  • an X2 or Xn connection may be established between two base stations in the RAN to transmit data such as cell information, thereby realizing cell reselection and handover of the terminal device.
  • two base stations that establish a connection in the RAN can be: a satellite serving as a base station and a satellite serving as a base station, a satellite serving as a base station and a traditional base station, a base station composed of multiple partial functions and a traditional base station, or a multi-function base station. Between a base station composed of a partial function and a satellite serving as a base station, etc.
  • a connection can be established between two satellites serving as base stations for data and signaling interaction.
  • dual-connectivity (DC) technology can be used to provide users with higher rates and improve spectral efficiency.
  • Terminal equipment can connect to two base stations at the same time to increase the throughput of a single user.
  • a connection needs to be established between two base stations to which the terminal device is connected at the same time through a corresponding interface for data and signaling interaction, as shown in FIG. 6 .
  • one of the two base stations connected to the terminal device at the same time serves as the primary base station, and the other serves as the secondary base station.
  • the interface between the AMF entity and the base station and the interface between the two base stations will also change accordingly, as shown in the schematic diagram of each interface in FIG. 7 .
  • the satellite can also be used as a relay device between the terminal device and the base station or as a remote radio unit (remote radio unit, RRU) of the base station.
  • RRU remote radio unit
  • the satellite is mainly responsible for L1 relay, which is used for physical layer forwarding, and the upper layers are not visible.
  • the base station in the RAN is split into two functional parts, DU and CU, in which satellites can be used as DUs.
  • the interface between the DU and the CU is the F1 interface.
  • the selected PLMN ID mainly meets the following conditions: the PLMN corresponding to the PLMN ID is RPLMN or EPLMN or HPLMN or EHPLMN.
  • the selected cell mainly meets the following conditions: at least one PLMN ID corresponding to the PLMN ID of the cell is RPLMN or EPLMN or HPLMN or EHPLMN.
  • the UE In terrestrial communication, during the RRC setup or RRC recovery process, the UE will carry the PLMN ID selected by the UE in the RRC setup complete message or RRC recovery complete message. As long as the PLMN ID selected by the UE meets the above conditions, the network allows the UE to access .
  • the communication range covered by satellites is very large.
  • GEO satellites the area of one beam can reach hundreds of kilometers.
  • a satellite cell will broadcast the core network PLMN IDs of multiple countries, so that the UE is likely to choose the PLMN selection and cell selection/reselection process. It is not the PLMN of the country where it is located, so it is difficult to communicate normally.
  • the embodiments of the present application provide a terminal equipment access control method and apparatus to solve the problem that in NTN, the PLMN selected by the terminal equipment may not be the PLMN of the country where the terminal equipment is located, so it is difficult to communicate normally.
  • the method and the device are based on the same inventive concept. Since the principles of the method and the device for solving problems are similar, the implementation of the device and the method can be referred to each other, and the repeated places will not be repeated.
  • At least one refers to one or more, and "a plurality” refers to two or more.
  • And/or which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • At least one (item) of the following or its similar expression refers to any combination of these items, including any combination of single item (item) or plural item (item).
  • At least one (a) of a, b or c may represent: a, b, c, a and b, a and c, b and c, or a, b and c, where a, b, c Can be single or multiple.
  • a terminal device access control method is provided in an embodiment of the present application.
  • the terminal device access control method provided in this application can be applied to NTN.
  • the method can be applied to a scenario where a terminal device in an RRC idle state establishes an RRC connection, or a terminal device in an RRC inactive state restores the RRC connection.
  • the terminal device access control method may specifically include:
  • a terminal device sends PLMN information to an access network device, where the PLMN information is used to indicate a first PLMN selected by the terminal device.
  • the access network device receives the PLMN information sent by the terminal device.
  • the access network device may be a satellite, for example, the access network device may be a satellite connected to the core network as an independent access network device. Alternatively, the access network device may also be a satellite connected to a ground base station as a relay device. Alternatively, the access network equipment may also be a satellite connected to a terrestrial CU as a DU, and so on.
  • the terminal device may send an RRC setup complete message or an RRC recovery complete message to the access network device, where the RRC setup complete message or the RRC recovery complete message carries PLMN information.
  • the terminal device may send an RRC establishment request or an RRC recovery request to the access network device, where the RRC establishment request is used to request the access network device to establish an RRC connection, and the RRC recovery request is used to request the access network device.
  • the device resumes the RRC connection.
  • the access network device may also send an RRC setup message or an RRC recovery message to the terminal device, where the RRC setup message or RRC recovery message is used to indicate the terminal device.
  • Establish signaling radio bearer 1 (signalling radio bearer 1, SRB1).
  • the access network device acquires the location information of the terminal device.
  • the access network device may locate the terminal device to obtain location information.
  • the terminal device measures at least one of the following parameters: the timing advance (TA) of each access network device, the The signal strength of the access network equipment is poor, the angle of arrival (AoA) of each access network equipment signal, etc.
  • the terminal equipment reports the measured parameters to the access network equipment, and the access network equipment determines the terminal according to the parameters reported by the terminal equipment.
  • the location of the device is the following parameters: the timing advance (TA) of each access network device, the The signal strength of the access network equipment is poor, the angle of arrival (AoA) of each access network equipment signal, etc.
  • the access network device may receive the location information sent by the terminal device.
  • the terminal device sends the RRC setup complete message or the RRC recovery complete message to the access network device
  • the RRC setup complete message or the RRC recovery complete message may carry the location information of the terminal device.
  • the terminal device may report its own location information to the access network device, and if the access network device does not trust the location information reported by the terminal device, the access network device may locate the terminal device.
  • the location information of the terminal device may be global positioning system (global positioning system, GPS) location information of the terminal device, such as longitude and latitude information.
  • GPS global positioning system
  • the location information of the terminal equipment may also be information of the virtual cell where the terminal equipment is located, and an area (evenly or non-uniformly) covered by the access network equipment is divided into multiple virtual cells, for example, as shown in FIG. 11 .
  • These virtual cells may correspond to national borders as much as possible, and the information of the virtual cells may be broadcast in the system messages of the cells. In the above manner, since the virtual cell can be large or small, it is relatively ambiguous location information, so the privacy of the terminal device can be protected in this manner.
  • the location information of the terminal device may also be country information of the country where the terminal device is located.
  • the terminal device can obtain the information of the national border through the system message broadcast by the cell, and obtain its own GPS position information through positioning. The terminal device can determine the country where it is located according to the national border information and its own GPS location information.
  • the access network device determines whether to allow the terminal device to access the first PLMN according to the location information and the country information corresponding to the first PLMN.
  • the access network device may determine that the terminal device is not allowed to access the first PLMN.
  • the access network device may determine that the terminal device is allowed to access the first PLMN.
  • the country information corresponding to the location information is inconsistent with the country information corresponding to the first PLMN, which may mean that the country corresponding to the location information is different from the country corresponding to the first PLMN.
  • the country information corresponding to the location information is consistent with the country information corresponding to the first PLMN, which may mean that the country corresponding to the location information is the same as the country corresponding to the first PLMN. For example, if the country corresponding to the location information is country A and the country corresponding to the first PLMN is country B, it may be considered that the country information corresponding to the location information is inconsistent with the country information corresponding to the first PLMN. If the country corresponding to the location information is country A, and the country corresponding to the first PLMN is country A, it can be considered that the country information corresponding to the location information is consistent with the country information corresponding to the first PLMN.
  • the country information corresponding to the location information is inconsistent with the country information corresponding to the first PLMN. It may also mean that the country corresponding to the location information is different from the country corresponding to the first PLMN, and the location corresponding to the location information is different from the country corresponding to the first PLMN.
  • the distance between the national borders of a country corresponding to a PLMN is greater than the distance threshold.
  • the distance threshold is 50m
  • the country corresponding to the location information is country A
  • the country corresponding to the first PLMN is country B
  • the distance between the position corresponding to the location information and the country line of country B is greater than 50m
  • the country information corresponding to the location information is inconsistent with the country information corresponding to the first PLMN.
  • the country corresponding to the location information is country A
  • the country corresponding to the first PLMN is country B
  • the distance between the location corresponding to the location information and the country line of country B is less than 50m
  • the country information corresponding to the location information is the same as the first PLMN.
  • the country information corresponding to a PLMN is the same.
  • the access network device may send an RRC release message to the terminal device, where the RRC release message is used to release the RRC connection of the terminal device.
  • the terminal device may enter the RRC idle state or the RRC inactive state after receiving the RRC release message.
  • the RRC release message may carry at least one item of the following information: a release reason, one or more PLMN identities allowed to be selected by the terminal device, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the terminal equipment can be prevented from selecting an inappropriate PLMN when the RRC establishment or RRC recovery is initiated again, thereby improving the access speed and improving the user experience. experience.
  • the access network device may also handover the terminal device to the target cell according to the location information of the terminal device, and at least one PLMN of the target cell identifies the corresponding country The country corresponding to the location information of the terminal device is the same.
  • the access network device may also send a handover reason to the access network device corresponding to the target cell or the AMF entity connected to the access network device corresponding to the target cell, and the handover reason is that the first PLMN is not where the terminal device is located. National PLMN.
  • the access network device may send a handover request to the access network device corresponding to the target cell or the AMF entity to which the access network device corresponding to the target cell is connected, where the handover request is used to request handover of the terminal device to the target cell.
  • the request carries a handover reason, and the handover reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the access network device may determine the target cell according to the recorded PLMN identifiers of each cell, and send a handover request to the access network device corresponding to the target cell or the AMF entity to which the access network device corresponding to the target cell is connected .
  • the access network device may also receive a handover failure message sent by the access network device corresponding to the target cell or the AMF entity to which the access network device corresponding to the target cell is connected, and the handover failure message may carry a rejection reason.
  • All PLMN identities that are target cells are not PLMN identities of the country where the terminal equipment is located. Since the PLMN identity of the cell may change, if the access network device does not update the record in time, an inappropriate target cell may be selected.
  • the access network device corresponding to the target cell or the access network device corresponding to the target cell can send a handover failure message to the access network device, and can also notify the access network device that the reason for the handover failure is that all PLMN identities of the target cell are not PLMN identities of the country where the terminal device is located.
  • the access network device may also send the PLMN identifier that the terminal device is allowed to select to the terminal device.
  • the access network device may establish the context of the terminal device with the AMF entity.
  • the access network device releases or switches cells that may access abnormally by judging whether the location information of the terminal device is consistent with the country information represented by the selected PLMN, so that it can be connected to the RRC.
  • the entry phase prevents abnormal access of terminal equipment.
  • the access network device can also inform the terminal device of the PLMN that can be selected, so that the terminal device can be prevented from selecting an inappropriate PLMN again, thereby helping to improve the speed of PLMN selection.
  • the terminal device access process in detail with reference to the scenario where the terminal device in the RRC idle state establishes an RRC connection.
  • the terminal device access process can be shown in Figure 12:
  • the terminal device sends an RRC establishment request message to the access network device, where the RRC establishment request message is used to request the access network device to establish an RRC connection with the terminal device.
  • the access network device sends an RRC establishment message to the terminal device, where the RRC establishment message is used to instruct the terminal device to establish an RRC connection.
  • the terminal equipment sends an RRC establishment complete message to the access network equipment, and the RRC establishment complete message is used to notify the access network equipment that the terminal equipment has established an RRC connection, and the RRC establishment complete message carries the PLMN ID of the first PLMN selected by the terminal equipment .
  • the access network device determines whether to allow the terminal device to access the first PLMN according to the location information of the terminal device and the country information corresponding to the first PLMN. If yes, go to step S1205, if not, go to step S1206 or S1207.
  • the location information of the terminal device can be obtained in any of the following ways:
  • the terminal device reports the location information to the access network device through an RRC setup complete message or an RRC setup request message.
  • the location information of the terminal device may also be obtained by the access network device locating the terminal device.
  • Manner 3 The terminal device reports the location information to the access network device through the RRC establishment complete message, and the access network device locates the terminal device after receiving the location information.
  • the access network device establishes the context of the terminal device with the AMF entity.
  • the access network device sends an RRC release message to the terminal device, where the RRC release message is used to instruct the terminal device to release the RRC connection.
  • the RRC release message may carry at least one item of the following information: a release reason, a PLMN identifier allowed to be selected by the terminal device, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the access network device switches the terminal device to the target cell, and the country corresponding to at least one PLMN identifier of the target cell is the same as the country corresponding to the location information of the terminal device.
  • the access network device may carry a handover cause in the handover request when sending the handover request, and the handover reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the access network device may also send the PLMN identifier that the terminal device is allowed to select to the terminal device.
  • the terminal device access process in the scenario where the terminal device in the RRC inactive state resumes the RRC connection is similar to the terminal device access process in the scenario where the terminal device in the RRC idle state establishes an RRC connection.
  • the difference is that the messages sent are different.
  • the terminal device in step S1201 the terminal device sends an RRC establishment request message
  • the terminal device in step S1201 sends the RRC connection Recovery request message.
  • the access network device in step S1202 the access network device sends an RRC setup message, and in the scenario where the terminal device in the RRC inactive state restores the RRC connection, the access network device in step S1202 What is sent is an RRC recovery message.
  • the terminal device in the scenario where the terminal device in the RRC idle state establishes an RRC connection, in step S1203, the terminal device sends an RRC establishment complete message, and in the scenario where the terminal device in the RRC inactive state restores the RRC connection, in step S1203, the terminal device sends the message: RRC recovery complete message. The repetition will not be repeated.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a terminal device access control method is provided in an embodiment of the present application.
  • the terminal device access control method provided in this application can be applied to NTN.
  • the method can be applied to the scenario of initial access of the terminal device.
  • the terminal device access control method may specifically include:
  • the terminal device sends PLMN information to the access network device, where the PLMN information is used to indicate the first PLMN selected by the terminal device.
  • the access network device receives the PLMN information sent by the terminal device.
  • the access network device may establish an RRC connection with the terminal device, and establish the context of the terminal device in the AMF entity.
  • the access network device acquires the location information of the terminal device.
  • step S1002 For the process of obtaining the location information of the terminal device by the access network device, reference may be made to the above step S1002 for details, and the repetition will not be repeated.
  • the access network device can first establish the context of the terminal device in the AMF entity, and then to the terminal device For positioning, the terminal equipment can also be located first, and then the context of the terminal equipment is established in the AMF entity, or the context of the terminal equipment is established in the AMF entity and the positioning of the terminal equipment is performed simultaneously, which is not specifically limited here.
  • the access network device determines whether to allow the terminal device to access the first PLMN according to the location information and the country information corresponding to the first PLMN.
  • the process for the access network device to determine whether to allow the terminal device to access the first PLMN according to the location information and the country information corresponding to the first PLMN may refer to the above step S1003 for details, and the repetition will not be repeated.
  • the access network device may send an RRC release request message to the AMF entity, where the RRC release request message is used to request the AMF entity to release the terminal device.
  • the RRC release request message may carry at least one of the following information: a release reason, a PLMN identifier that the terminal device is allowed to select, and the release reason the first PLMN is not a PLMN of the country where the terminal device is located.
  • the AMF entity may send a context release command to the access network device, where the context release command is used to instruct the access network device to release the RRC connection of the terminal device, and the context
  • the release command carries a release reason, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the access network device may send an RRC release message to the terminal device, and the release information carries the PLMN identifier that the terminal device is allowed to select.
  • the RRC release message may carry at least one item of the following information: a release reason, a PLMN identifier that the terminal device is allowed to select, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the terminal equipment can be prevented from selecting an inappropriate PLMN when the RRC establishment or RRC recovery is initiated again, thereby improving the access speed and improving the user experience. experience.
  • the access network device can also switch the terminal device to the target cell according to the location information of the terminal device.
  • At least one PLMN of the target cell identifies the country corresponding to the terminal device.
  • the location information corresponds to the same country.
  • the access network device may also send a handover reason to the access network device corresponding to the target cell or the AMF entity connected to the access network device corresponding to the target cell, and the handover reason is that the first PLMN is not where the terminal device is located. National PLMN.
  • the access network device may send a handover request to the access network device corresponding to the target cell or the AMF entity to which the access network device corresponding to the target cell is connected, where the handover request is used to request handover of the terminal device to the target cell.
  • the request carries a handover reason, and the handover reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the access network device may also send the PLMN identifier that the terminal device is allowed to select to the terminal device.
  • the access network equipment may first allow the terminal equipment to access, and determine whether the location information of the terminal equipment is consistent with the country information represented by the selected PLMN, so that the possible The abnormally accessed terminal equipment performs release or cell handover, so that abnormal access of the terminal equipment can be prevented in the RRC access phase.
  • the access network device can also inform the terminal device of the PLMN that can be selected, so that the terminal device can be prevented from selecting an inappropriate PLMN again, thereby helping to improve the speed of PLMN selection.
  • the terminal device access process can be shown in Figure 14:
  • the access network device sends an initial UE message to the AMF entity.
  • the AMF entity sends an initial context establishment request to the access network device.
  • the access network device sends an initial context establishment response to the AMF entity.
  • the access network device determines whether to allow the terminal device to access the first PLMN according to the location information of the terminal device and the country information corresponding to the first PLMN. If yes, execute step S1408, if not, execute step S1409 or S1410-S1413.
  • the manner in which the access network device obtains the location information of the terminal device may be: the terminal device reports the location information of the terminal device to the access network device through an RRC setup request message or an RRC setup complete message.
  • the manner in which the access network device obtains the location information of the terminal device may also be as follows: the access network device locates the terminal device to obtain the location information of the terminal device.
  • the terminal device reports the location information to the access network device through the RRC establishment complete message, and the access network device locates the terminal device after receiving the location information.
  • step S1408 for details, refer to the above-mentioned step S1205, and the repetition will not be repeated.
  • step S1409 for details, refer to the above-mentioned step S1207, and the repetition will not be repeated.
  • the access network device sends a context release request to the AMF entity, where the context release request is used to request the AMF entity to release the context of the terminal device.
  • the context release request may carry a release reason, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the context release request may also carry the PLMN ID that the terminal device is allowed to select.
  • the AMF entity sends a context release command to the access network device, where the context release command is used to instruct the access network device to release the context of the terminal device.
  • the context release command may carry a release reason, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the context release command can also carry the PLMN ID that the terminal device is allowed to select.
  • the access network device sends an RRC release message to the terminal device.
  • the RRC release message may carry a release reason, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the RRC release message may also carry the PLMN ID that the terminal device is allowed to select.
  • the access network device sends a context release complete message to the AMF entity, where the context release complete message is used to notify the AMF entity that the context of the terminal device has been released.
  • a terminal device access control method is provided in an embodiment of the present application.
  • the terminal device access control method provided in this application can be applied to NTN.
  • the method can be applied to the scenario of initial access of the terminal device.
  • the terminal device access control method may specifically include:
  • the access network device sends PLMN information to the AMF entity.
  • the AMF entity receives the PLMN information, and the PLMN information is used to indicate the first PLMN selected by the terminal device.
  • the terminal device may send the PLMN information to the access network device, and the access network device sends the PLMN information to the AMF entity.
  • the AMF entity acquires the location information of the terminal device.
  • the location information of the terminal device may come from the terminal device.
  • the terminal device reports the location information to the access network device through the RRC establishment complete message, and the access network device reports the location information of the terminal device to the AMF entity during the process of establishing the context of the terminal device with the AMF entity.
  • the terminal device sends a NAS message carrying location information to the access network device, and the access network device transparently transmits the NAS message to the AMF entity.
  • the terminal device may send an uplink information transfer message (UL information transfer) to the access network device, where the uplink information transfer message includes NAS signaling, the NAS signaling carries the location information of the terminal device, and the access network device receives After the uplink information transfer message is reached, an uplink NAS transfer message is sent to the AMF entity, where the uplink NAS transfer message includes the NAS signaling.
  • UL information transfer uplink information transfer message
  • the location information of the terminal device may be obtained by locating the terminal device by the access network device. Then, the access network device reports the location information of the terminal device to the AMF entity in the process of establishing the context of the terminal device with the AMF entity.
  • the AMF entity determines whether to allow the terminal device to access the first PLMN according to the location information and the country information corresponding to the first PLMN.
  • Step S1503 is similar to step S1003, the difference is that the device that executes step S1003 is an access network device, and the device that executes step S1503 is an AMF entity.
  • the device that executes step S1503 is an access network device, and the device that executes step S1503 is an AMF entity.
  • step S1503 refer to the relevant description of step S1003, which will not be repeated here.
  • the AMF entity may send a context release command to the access network device, where the context release command is used to instruct the access network device to release the terminal device.
  • the context release command may carry at least one item of the following information: a release reason, a PLMN identifier allowed to be selected by the terminal device, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the access network device releases the terminal device or switches the terminal device to a target cell according to the context release command, and at least one PLMN of the target cell is identified as:
  • the terminal device allows the selected PLMN identity.
  • the AMF entity may update the mobility restriction list of the terminal device, and send the updated mobility restriction list to the access network device.
  • the updated mobility restriction list includes at least one item of the following information: PLMN identities allowed to be selected by the terminal device, and PLMN identities that the terminal device is not allowed to select.
  • the access network device may switch the terminal device to the target cell or release the terminal device according to the mobility restriction list, and at least one of the target cells may be released.
  • the PLMN identity is the PLMN identity that the terminal device is allowed to select.
  • the access network device may also send the PLMN identifier that the terminal device is allowed to select to the terminal device.
  • the terminal equipment may first allow the terminal equipment to access during initial access.
  • the terminal equipment is released or cell switched, so that abnormal access of the terminal equipment can be prevented in the RRC access phase.
  • the access network device can also inform the terminal device of the PLMN that can be selected, so that the terminal device can be prevented from selecting an inappropriate PLMN again, thereby helping to improve the speed of PLMN selection.
  • the terminal device sends an uplink information transfer message (UL information transfer) to the access network device.
  • UL information transfer uplink information transfer
  • the UL information transfer may include NAS signaling, and the NAS signaling carries the location information of the terminal device.
  • the access network device sends an uplink NAS transfer message to the AMF entity.
  • the NAS signaling may be included in the uplink NAS transfer message.
  • the AMF entity determines whether to allow the terminal device to access the first PLMN according to the location information of the terminal device and the country information corresponding to the first PLMN. If not, execute steps S1610-S1612 or S1613-S1618.
  • the AMF entity updates the mobility restriction list of the terminal device, and the updated mobility restriction list includes at least one of the following information: PLMN identifiers that the terminal device allows selection, and PLMN identifiers that the terminal device does not allow selection.
  • the AMF entity sends the updated mobility restriction list to the access network device.
  • the access network device switches the terminal device to a target cell or releases the terminal device according to the updated mobility restriction list, where at least one PLMN of the target cell is identified as a PLMN that the terminal device is allowed to select logo.
  • step S1207 for the process that the access network device switches the terminal device to the target cell according to the mobility restriction list, specific reference may be made to step S1207 in the above-mentioned first embodiment, and the repetition will not be repeated.
  • the access network device releases the terminal device according to the mobility restriction list.
  • step S1206 in the above-mentioned first embodiment, and the repetition will not be repeated.
  • steps S1616 and S1617 may also be performed.
  • the AMF entity sends a downlink NAS transfer message to the access network device.
  • the access network device sends a downlink information transfer message to the terminal device.
  • the downlink NAS transfer message sent by the AMF entity to the access network device may include NAS signaling.
  • the NAS signaling is used to inform the terminal device that the selected PLMN is not the PLMN of the country where it is located.
  • the NAS signaling also uses Used to notify the terminal device of the PLMN ID that is allowed to be selected.
  • the NAS signaling may be included in the downlink information transfer message sent by the access network device to the terminal device.
  • the terminal device access process can also be shown in Figure 17:
  • the initial UE message sent by the access network device to the AMF entity carries the location information of the terminal device.
  • the access network device can obtain the location information of the terminal device in any of the following ways:
  • the terminal device reports the location information to the access network device through an RRC setup complete message or an RRC setup request message.
  • the location information of the terminal device may also be obtained by the access network device locating the terminal device.
  • Manner 3 The terminal device reports the location information to the access network device through the RRC establishment complete message, and the access network device locates the terminal device after receiving the location information.
  • the AMF entity determines whether to allow the terminal device to access the first PLMN according to the location information of the terminal device and the country information corresponding to the first PLMN. If yes, execute steps S1706 to S1707. If not, execute steps S1708-S1710 or S1711-S1713.
  • steps S1714 and S1715 may also be performed.
  • S1714-S1715 for details, refer to the above-mentioned S1616-S1617, which will not be repeated here.
  • the embodiments of the present application provide a communication device, the structure of which may be as shown in FIG. 18 , including a transceiver unit 1801 and a processing unit 1802 .
  • the communication apparatus may be specifically used to implement the method performed by the access network device in the embodiments as shown in FIGS. 9 to 12 , and the apparatus may be the access network device itself or the access network.
  • the transceiver unit 1801 is configured to receive PLMN information, and the PLMN information is used to indicate the first PLMN selected by the terminal device.
  • the processing unit 1802 is configured to acquire location information of the terminal device, and determine whether to allow the terminal device to access the first PLMN according to the location information and country information corresponding to the first PLMN.
  • the processing unit 1802 may be specifically configured to: locate the terminal device to obtain the location information.
  • the processing unit 1802 may also be specifically configured to: receive the location information sent by the terminal device through the transceiver unit 1801 .
  • the processing unit 1802 may be further specifically configured to: receive the location information sent by the terminal device through the transceiver unit 1801, and then locate the terminal device.
  • the processing unit 1802 may be specifically configured to: when the country information corresponding to the location information corresponds to the first PLMN. When the country information is inconsistent, it is determined that the terminal device is not allowed to access the first PLMN. Or, when the country information corresponding to the location information is consistent with the country information corresponding to the first PLMN, it is determined that the terminal device is allowed to access the first PLMN.
  • the transceiver unit 1801 is further configured to: after the processing unit 1802 determines that the terminal device is not allowed to access the first PLMN, send an RRC release message to the terminal device, where the RRC release message is used to release the terminal device's RRC connection.
  • the RRC release message carries at least one item of the following information: a release reason, a PLMN identifier allowed to be selected by the terminal device, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the processing unit 1802 is further configured to: after the processing unit 1802 determines that the terminal equipment is not allowed to access the first PLMN, switch the terminal equipment to the target cell according to the location information of the terminal equipment.
  • the country corresponding to the at least one PLMN identifier is the same as the country corresponding to the location information of the terminal device.
  • the transceiver unit 1801 is further configured to: send a handover reason to the access network device corresponding to the target cell or the AMF entity connected to the access network device corresponding to the target cell, and the handover reason is that the first PLMN is not where the terminal device is located. National PLMN.
  • the communication apparatus may be specifically used to implement the method performed by the access network equipment in the embodiments as shown in FIGS. 13 to 14 , and the apparatus may be the access network equipment itself or the access network equipment.
  • the transceiver unit 1801 is configured to receive PLMN information, and the PLMN information is used to indicate the first PLMN selected by the terminal device.
  • the processing unit 1802 is configured to acquire location information of the terminal device, and determine whether to allow the terminal device to access the first PLMN according to the location information and country information corresponding to the first PLMN.
  • the processing unit 1802 may be specifically configured to: locate the terminal device to obtain the location information.
  • the processing unit 1802 may also be specifically configured to: receive the location information sent by the terminal device through the transceiver unit 1801 .
  • the processing unit 1802 may be further specifically configured to: receive the location information sent by the terminal device through the transceiver unit 1801, and then locate the terminal device.
  • the processing unit 1802 may be specifically configured to: when the country information corresponding to the location information corresponds to the first PLMN. When the country information is inconsistent, it is determined that the terminal device is not allowed to access the first PLMN. Or, when the country information corresponding to the location information is consistent with the country information corresponding to the first PLMN, it is determined that the terminal device is allowed to access the first PLMN.
  • the transceiver unit 1801 is further configured to: after the processing unit 1802 determines that the terminal device is not allowed to access the first PLMN, send an RRC release request message to the AMF entity, where the RRC release request message is used to request the AMF The entity releases the terminal device.
  • the RRC release request message carries at least one item of the following information: a release reason, a PLMN identifier allowed to be selected by the terminal device, and the release reason
  • the first PLMN is not a PLMN of the country where the terminal device is located.
  • the transceiver unit 1801 is further configured to: after sending the RRC release request message to the AMF entity, receive a context release command sent by the AMF entity, where the context release command is used to instruct the network device to release the RRC connection of the terminal device, and the context release
  • the command carries a release reason, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located; and, an RRC release message is sent to the terminal device, and the release information carries a PLMN identifier that the terminal device allows to select.
  • the processing unit 1802 is further configured to: after the transceiver unit 1801 receives the context release command, switch the terminal device to the target cell according to the location information of the terminal device, and at least one PLMN identifier of the target cell corresponds to the country and the terminal device.
  • the location information corresponds to the same country.
  • the transceiver unit 1801 is further configured to: send a handover reason to the access network device corresponding to the target cell or the AMF entity connected to the access network device corresponding to the target cell, and the handover reason is that the first PLMN is not where the terminal device is located. National PLMN.
  • the communication device may be specifically used to implement the method performed by the AMF entity in the embodiments shown in FIGS. 15 to 17 , and the device may be the AMF entity itself, or a chip or a chip in the AMF entity. The part of a set or chip that performs the function of the associated method.
  • the transceiver unit 1801 is configured to receive PLMN information, and the PLMN information is used to indicate the first PLMN selected by the terminal device.
  • the processing unit 1802 is configured to acquire location information of the terminal device, and determine whether to allow the terminal device to access the first PLMN according to the location information and country information corresponding to the first PLMN.
  • the processing unit 1802 can be specifically configured to: receive the location information sent by the access network device through the transceiver unit 1801, where the location information is sent by the terminal device to the access network device, or , and the location information is obtained by the access network device locating the terminal device.
  • the processing unit 1802 may be specifically configured to: when the country information corresponding to the location information corresponds to the first PLMN. When the country information is inconsistent, it is determined that the terminal device is not allowed to access the first PLMN. Or, when the country information corresponding to the location information is consistent with the country information corresponding to the first PLMN, it is determined that the terminal device is allowed to access the first PLMN.
  • the transceiver unit 1801 is further configured to: after the processing unit 1802 determines that the terminal device is not allowed to access the first PLMN, send a context release command to the access network device, where the context release command is used to indicate the connection The network access device releases the terminal device.
  • the context release command carries at least one item of the following information: a release reason, a PLMN identifier allowed to be selected by the terminal device, and the release reason is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the processing unit 1802 is further configured to: after determining that the terminal device is not allowed to access the first PLMN, update the mobility restriction list of the terminal device.
  • the transceiver unit 1801 is further configured to: send an updated mobility restriction list to the access network device, where the updated mobility restriction list includes at least one of the following information: the PLMN identifier that the terminal device allows to select, the PLMN identifier that the terminal device does not allow Selected PLMN identity.
  • the communication apparatus may be specifically used to implement the method performed by the access network equipment in the embodiments as shown in FIGS. 15 to 17 , and the apparatus may be the access network equipment itself or the access network equipment.
  • the transceiver unit is used to receive the context release command sent by the AMF entity, the context release command is used to instruct the access network device to release the terminal device, and the context release command carries at least one of the following information: PLMN identifier, the release reason is that the first PLMN selected by the terminal equipment is not the PLMN of the country where the terminal equipment is located.
  • the processing unit 1802 is configured to switch the terminal device to a target cell according to the context release command, where at least one PLMN identifier of the target cell is a PLMN identifier that the terminal device is allowed to select.
  • the transceiver unit 1801 is further configured to: send a handover cause to the access network device or AMF entity corresponding to the target cell, where the handover cause is that the first PLMN is not a PLMN of the country where the terminal device is located.
  • the communication apparatus may be specifically used to implement the method performed by the access network equipment in the embodiments as shown in FIGS. 15 to 17 , and the apparatus may be the access network equipment itself or the access network equipment.
  • the transceiver unit 1801 is configured to receive a mobility restriction list sent by the AMF.
  • the mobility restriction list includes at least one of the following information: PLMN identifiers that the terminal device allows selection, and PLMN identifiers that the terminal device does not allow selection.
  • the processing unit 1802 is configured to switch the terminal device to the target cell or release the terminal device according to the mobility restriction list, where at least one PLMN identifier of the target cell is a PLMN identifier that the terminal device is allowed to select.
  • the processing unit 1802 when switching the terminal device to the target cell according to the mobility restriction list, is specifically configured to: send the switch to the access network device or AMF entity corresponding to the target cell through the transceiver unit 1801 according to the mobility restriction list.
  • the handover request is used to request handover of the terminal device to the target cell.
  • the handover request carries a handover reason
  • the handover reason is that the PLMN selected by the terminal device is not the PLMN of the country where the terminal device is located.
  • the processing unit 1802 may be specifically configured to: send a radio resource control RRC release message to the terminal device through the transceiver unit 1801 according to the mobility restriction list, and the RRC release message is used to release the terminal device.
  • the RRC connection of the terminal device may be specifically configured to: send a radio resource control RRC release message to the terminal device through the transceiver unit 1801 according to the mobility restriction list, and the RRC release message is used to release the terminal device.
  • the RRC connection of the terminal device may be specifically configured to: send a radio resource control RRC release message to the terminal device through the transceiver unit 1801 according to the mobility restriction list, and the RRC release message is used to release the terminal device.
  • the RRC connection of the terminal device may be specifically configured to: send a radio resource control RRC release message to the terminal device through the transceiver unit 1801 according to the mobility restriction list, and the RRC release message is used to release the terminal device.
  • the RRC connection of the terminal device may be specifically configured to: send a
  • the RRC release message carries at least one of the following information: a release reason, an identifier of a PLMN allowed to be selected by the terminal device, and the release reason is that the PLMN selected by the terminal device is not a PLMN of the country where the terminal device is located.
  • the communication apparatus may be specifically used to implement the method performed by the terminal device in the embodiments as shown in FIGS. 10 to 17 , and the apparatus may be the terminal device itself, or may be a chip or a chip in the terminal device The part of a set or chip that performs the function of the associated method.
  • the transceiver unit 1801 is used to communicate with the access network equipment; the processing unit 1802 is used to send PLMN information to the access network equipment through the transceiver unit 1801, and the PLMN information is used to indicate the PLMN selected by the terminal equipment; Unit 1801 receives the radio resource control RRC release message sent by the access network device, the RRC release message is used to release the RRC connection of the terminal device, and the RRC release message carries at least one of the following information: the release reason, the PLMN that the terminal device allows to select Identification, the release reason is that the PLMN selected by the terminal equipment is not the PLMN of the country where the terminal equipment is located.
  • the processing unit 1802 is further configured to: after receiving the radio resource control RRC release message sent by the access network device through the transceiver unit 1801, reselect the PLMN according to the PLMN identifier allowed to be selected by the terminal device.
  • the division of modules in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be other division methods.
  • the functional modules in the various embodiments of the present application may be integrated into one processing unit. In the device, it can also exist physically alone, or two or more modules can be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It can be understood that, for the functions or implementations of each module in the embodiments of the present application, further reference may be made to the related descriptions of the method embodiments.
  • the communication device may be as shown in FIG. 19 , and the communication device may be a communication device or a chip in the communication device, where the communication device may be a terminal device or a network device.
  • the apparatus may include a processor 1901 , a communication interface 1902 , and a memory 1903 .
  • the processing unit 1802 may be the processor 1901 .
  • the transceiver unit 1801 may be the communication interface 1902 .
  • the processor 1901 may be a central processing unit (central processing unit, CPU), or a digital processing module or the like.
  • the communication interface 1902 may be a transceiver, an interface circuit such as a transceiver circuit, or a transceiver chip or the like.
  • the apparatus further includes: a memory 1903 for storing programs executed by the processor 1901 .
  • the memory 1903 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or may be a volatile memory (volatile memory), such as random access memory (random access memory) -access memory, RAM).
  • Memory 1903 is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • the processor 1901 is used for executing the program code stored in the memory 1903, and is specifically used for executing the actions of the above-mentioned processing unit 1802, which will not be repeated in this application.
  • the communication interface 1902 is specifically configured to perform the actions of the above-mentioned transceiver unit 1801, and details are not described herein again in this application.
  • the specific connection medium between the communication interface 1902, the processor 1901, and the memory 1903 is not limited in the embodiments of the present application.
  • the memory 1903, the processor 1901, and the communication interface 1902 are connected through a bus 1904 in FIG. 19.
  • the bus is represented by a thick line in FIG. 19, and the connection between other components is only for schematic illustration. , is not limited.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is shown in FIG. 19, but it does not mean that there is only one bus or one type of bus.
  • FIG. 20 is a schematic structural diagram of an access network device provided by an embodiment of the present application, such as a schematic structural diagram of a base station.
  • the base station can perform the functions of the access network equipment in the method embodiments described in the foregoing FIGS. 10 to 17 .
  • the base station 200 may include one or more distributed units (DUs) 2001 and one or more centralized units (CUs) 2002 .
  • the DU 2001 may include at least one antenna 20011, at least one radio frequency unit 20015, at least one processor 20020 and at least one memory 20014.
  • the DU 2001 part is mainly used for the transceiver of radio frequency signals, the conversion of radio frequency signals and baseband signals, and part of baseband processing.
  • the CU 2002 may include at least one processor 20022 and at least one memory 20021 .
  • the CU2002 and DU2001 can communicate through interfaces, wherein the control plane interface can be Fs-C, such as F1-C, and the user plan interface can be Fs-U, such as F1-U.
  • the CU 2002 part is mainly used to perform baseband processing, control the base station, and the like.
  • the DU 2001 and the CU 2002 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the CU 2002 is the control center of the base station, which can also be called a processing unit, and is mainly used to complete the baseband processing function.
  • the CU 2002 may be used by the access network device to perform the operation procedures related to the communication between the access network device and the terminal device in the method embodiments described in FIG. 10 to FIG.
  • the CU 2002 may be used by the access network device
  • the device executes the operation flow of the communication between the access network device and the AMF entity in the method embodiments described in the above Figures 13 to 14 , or the CU 2002 can be used for the access network device to execute the methods described in the above Figures 15 to 17 .
  • the baseband processing on the CU and DU can be divided according to the protocol layers of the wireless network.
  • the functions of the PDCP layer and above are set in the CU, and the functions of the protocol layers below PDCP, such as the RLC layer and the MAC layer, are set in the DU.
  • the CU implements the functions of the RRC and PDCP layers
  • the DU implements the functions of the RLC, MAC, and physical (physical, PHY) layers.
  • the base station 200 may include one or more radio frequency units (RUs), one or more DUs and one or more CUs.
  • the DU may include at least one processor 20020 and at least one memory 20014, the RU may include at least one antenna 20011 and at least one radio frequency unit 20015, and the CU may include at least one processor 20022 and at least one memory 20021.
  • the CU2002 may be composed of one or more single boards, and multiple single boards may jointly support a wireless access network (such as a 5G network) with a single access indication, or support wireless access systems of different access standards respectively.
  • Access network such as LTE network, 5G network or other network.
  • the memory 20021 and the processor 20022 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.
  • the DU2001 can be composed of one or more single boards.
  • Multiple single boards can jointly support a wireless access network (such as a 5G network) with a single access instruction, or can support a wireless access network with different access standards (such as a 5G network). LTE network, 5G network or other network).
  • the memory 20014 and processor 20020 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.
  • FIG. 21 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device can be applied to the systems shown in FIG. 4 to FIG. 9 , and performs the functions of the terminal device in the method embodiments described in the foregoing FIGS. 10 to 17 .
  • FIG. 21 shows only the main components of the terminal device.
  • the terminal device 210 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control the entire terminal device, execute software programs, and process data of the software programs, for example, to support the terminal device to execute the method embodiments described in FIGS. 10 to 17 above. actions described in .
  • the memory is mainly used to store software programs and data.
  • the control circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • the control circuit together with the antenna can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the memory, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 21 only shows one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories.
  • the memory may also be referred to as a storage medium or a storage device or the like.
  • the memory may be a storage element on the same chip as the processor, that is, an on-chip storage element, or an independent storage element, which is not limited in this embodiment of the present application.
  • the terminal device may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processing unit is mainly used to control the entire terminal device. , execute the software program, and process the data of the software program.
  • the processor in FIG. 21 may integrate the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors, interconnected by technologies such as buses.
  • a terminal device may include multiple baseband processors to adapt to different network standards, a terminal device may include multiple central processors to enhance its processing capability, and various components of the terminal device may be connected through various buses.
  • the baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data may be built in the processor, or may be stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • an antenna and a control circuit with a transceiving function may be regarded as a transceiving unit 2101 of the terminal device 210, for example, used to support the terminal device to perform a receiving function and a transmitting function.
  • the processor 2102 having the processing function is regarded as the processing unit 2102 of the terminal device 210 .
  • the terminal device 210 includes a transceiver unit 2101 and a processing unit 2102 .
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, or the like.
  • the device used for realizing the receiving function in the transceiver unit 2101 may be regarded as a receiving unit, and the device used for realizing the sending function in the transceiver unit 2101 may be regarded as a sending unit, that is, the transceiver unit 2101 includes a receiving unit and a sending unit,
  • the receiving unit may also be called a receiver, an input port, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter or a transmitting circuit, and the like.
  • the processor 2102 may be configured to execute the instructions stored in the memory to control the transceiver unit 2101 to receive signals and/or send signals, so as to complete the functions of the terminal device in the above method embodiments.
  • the processor 2102 also includes an interface for implementing signal input/output functions.
  • the function of the transceiver unit 2101 can be considered to be implemented by a transceiver circuit or a dedicated chip for transceiver.
  • An embodiment of the present invention further provides a computer-readable storage medium for storing computer software instructions to be executed for executing the above-mentioned processor, which includes a program to be executed for executing the above-mentioned processor.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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Abstract

本申请公开了一种终端设备接入控制方法及装置，用以解决非地面网络中，终端设备选择的公共陆地移动网络可能不是其所处国家的公共陆地移动网络，从而难以正常通信的问题。该方法包括：网络设备接收公共陆地移动网络信息，公共陆地移动网络信息用于指示终端设备选择的第一公共陆地移动网络。网络设备获取终端设备的位置信息，并根据位置信息与第一公共陆地移动网络对应的国家信息确定是否允许终端设备接入第一公共陆地移动网络。

Description

一种终端设备接入控制方法及装置 技术领域
本申请涉及通信技术领域，尤其涉及一种终端设备接入控制方法及装置。
背景技术
公共陆地移动网络(public land mobile network，PLMN)由政府或它所批准的经营者以为公众提供陆地移动通信业务为目的建立和经营的网络。用户设备(user equipment，UE)在选择进行PLMN时需要满足国家安规和监管要求，即UE只能接入所在位置的国家的PLMN，例如，UE在A国时，只能接入A国的PLMN，在B国时，只能接入B国的PLMN。由于一般的地面网络中，基站的辐射范围有限，一般情况下，UE不会接入到别国的基站，所以通信协议标准的各种流程中未对UE选择非所在地国家PLMN接入进行限制。
但是在非地面网络(non-terrestrial network，NTN)中，卫星的轨道越高其覆盖面积越大，一个卫星小区可能覆盖多个国家，并且由于一个卫星可以被多个国家的核心网共享使用，因此一个卫星小区可以广播多个国家的PLMN标识(PLMN identification，PLMN ID)，导致UE在做PLMN选择和小区选择/重选的过程中，很可能选择了不是其所处国家的PLMN，从而难以正常通信。
发明内容
本申请提供一种终端设备接入控制方法及装置，用以解决NTN中，终端设备选择的PLMN可能不是其所处国家的PLMN，从而难以正常通信的问题。
第一方面，本申请提供了一种终端设备接入控制方法，所述方法可以应用于接入网设备，或者芯片，或者芯片组，或者芯片中执行该方法的功能模块等等。以接入网设备为例，该方法包括：接入网设备接收PLMN信息，PLMN信息用于指示终端设备选择的第一PLMN。接入网设备获取终端设备的位置信息，并根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。
本申请实施例中，接入网设备通过判定终端设备的位置信息和选择的PLMN所代表的国家信息是否一致，来对可能异常接入的终端设备进行释放或者小区切换，从而可以在无线资源控制(radio resource control，RRC)接入阶段阻止终端设备的异常接入。
在一种可能的设计中，接入网设备获取终端设备的位置信息时，可以对终端设备进行定位，得到位置信息。上述设计中，接入网设备通过对终端设备进行定位，从而可以获取到终端设备的位置信息，从而可以判断终端设备选择的PLMN是否合适。
在一种可能的设计中，接入网设备获取终端设备的位置信息时，也可以接收终端设备发送的位置信息。上述设计中，终端设备通过上报自己的位置信息，使得接入网设备可以获取到终端设备的位置信息，从而可以判断终端设备选择的PLMN是否合适。
在一种可能的设计中，接入网设备获取终端设备的位置信息时，也可以先接收终端设备发送的位置信息，然后对终端设备进行定位。通过上述方式，接入网设备可以在终端设备上报的位置信息不准确，或者在不信任终端设备上报的位置信息时对终端设备进行定位，从而获得比较准确的位置信息。
在一种可能的设计中，终端设备的位置信息可以是终端设备的全球定位系统(global positioning system，GPS)位置信息，例如经纬度信息等。通过上述方式，接入网设备可以比较准确的判断出终端设备是否在其选择的PLMN对应国家的境内。
在一种可能的设计中，终端设备的位置信息也可以是终端设备所在虚拟小区的信息。上述方式中，由于虚拟小区可大可小，是一个较为模糊的位置信息，因此通过这种方式可以保护终端设备隐私。
在一种可能的设计中，终端设备的位置信息也可以是终端设备所在国家的国家信息。上述方式中，国家信息是一个比较大范围，因此通过这种方式可以保护终端设备隐私。
在一种可能的设计中，接入网设备根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN时，当位置信息对应的国家信息与第一PLMN对应的国家信息不一致时，接入网设备确定终端设备不允许接入第一PLMN。或者，当位置信息对应的国家信息与第一PLMN对应的国家信息一致时，接入网设备确定终端设备允许接入第一PLMN。通过上述方式，可以避免终端设备接入不是其当前所处国家的PLMN。
在一种可能的设计中，位置信息对应的国家信息与第一PLMN对应的国家信息不一致，可以指位置信息对应的国家与第一PLMN对应的国家不相同。
在一种可能的设计中，位置信息对应的国家信息与第一PLMN对应的国家信息不一致，也可以指位置信息对应的国家与第一PLMN对应的国家不相同，且位置信息对应的位置与第一PLMN对应的国家的国界线之间的距离大于距离阈值。上述方式中，通过允许国家线附近一定范围的终端设备接入，可以避免因为定位误差而给终端设备带来无法接入的情况，从而可以保障终端设备的接入效率，提升用户体验。
在一种可能的设计中，位置信息对应的国家信息与第一PLMN对应的国家信息一致，可以指位置信息对应的国家与第一PLMN对应的国家相同。
在一种可能的设计中，在接入网设备确定终端设备不允许接入第一PLMN之后，接入网设备还可以向终端设备发送RRC释放消息，RRC释放消息用于释放终端设备的RRC连接。
在一种可能的设计中，RRC释放消息携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因为第一PLMN不是终端设备所处国家的PLMN。上述方式中，通过告诉终端设备哪些PLMN ID是当前位置的终端设备可以选择的，从而可以避免终端设备次再发起RRC建立或者RRC恢复时选择不合适的PLMN，进而可以提高接入速度，提升用户体验。
在一种可能的设计中，在接入网设备确定终端设备不允许接入第一PLMN之后，接入网设备根据终端设备的位置信息将终端设备切换到目标小区，目标小区的至少一个PLMN标识对应的国家与终端设备的位置信息对应的国家相同。通过上述方式，可以降低终端设备的通信中断，从而提高用户体验。
在一种可能的设计中，接入网设备向目标小区对应的接入网设备或者目标小区对应的接入网设备所连接的AMF实体发送切换原因，切换原因为第一PLMN不是终端设备所处国家的PLMN。
第二方面，本申请提供了一种终端设备接入控制方法，所述方法可以应用于接入网设备，或者芯片，或者芯片组，或者芯片中执行该方法的功能模块等等。以接入网设备为例，该方法包括：接入网设备接收PLMN信息，PLMN信息用于指示终端设备选择的第一 PLMN。接入网设备获取终端设备的位置信息，并根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。
本申请实施例中，接入网设备在终端设备初始接入时，可以先允许终端设备接入，并通过判定终端设备的位置信息和选择的PLMN所代表的国家信息是否一致，来对可能异常接入的终端设备进行释放或者小区切换，从而可以在RRC接入阶段阻止终端设备的异常接入。并且，接入网设备还可以告知终端设备可以选择的PLMN，从而可以避免终端设备再选不合适的PLMN，从而有利于提高PLMN选择的速度。
在一种可能的设计中，接入网设备获取终端设备的位置信息时，可以对终端设备进行定位，得到位置信息。上述设计中，接入网设备通过对终端设备进行定位，从而可以获取到终端设备的位置信息，从而可以判断终端设备选择的PLMN是否合适。
在一种可能的设计中，接入网设备获取终端设备的位置信息时，也可以接收终端设备发送的位置信息。上述设计中，终端设备通过上报自己的位置信息，使得接入网设备可以获取到终端设备的位置信息，从而可以判断终端设备选择的PLMN是否合适。
在一种可能的设计中，接入网设备获取终端设备的位置信息时，也可以先接收终端设备发送的位置信息，然后对终端设备进行定位。通过上述方式，接入网设备可以在终端设备上报的位置信息不准确，或者在不信任终端设备上报的位置信息时对终端设备进行定位，从而获得比较准确的位置信息。
在一种可能的设计中，终端设备的位置信息可以是终端设备的GPS位置信息，例如经纬度信息等。通过上述方式，接入网设备可以比较准确的判断出终端设备是否在其选择的PLMN对应国家的境内。
在一种可能的设计中，终端设备的位置信息也可以是终端设备所在虚拟小区的信息。上述方式中，由于虚拟小区可大可小，是一个较为模糊的位置信息，因此通过这种方式可以保护终端设备隐私。
在一种可能的设计中，终端设备的位置信息也可以是终端设备所在国家的国家信息。上述方式中，国家信息是一个比较大范围，因此通过这种方式可以保护终端设备隐私。
在一种可能的设计中，接入网设备根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN时，当位置信息对应的国家信息与第一PLMN对应的国家信息不一致时，接入网设备确定终端设备不允许接入第一PLMN。或者，当位置信息对应的国家信息与第一PLMN对应的国家信息一致时，接入网设备确定终端设备允许接入第一PLMN。通过上述方式，可以避免终端设备接入不是其当前所处国家的PLMN。
在一种可能的设计中，位置信息对应的国家信息与第一PLMN对应的国家信息不一致，可以指位置信息对应的国家与第一PLMN对应的国家不相同。
在一种可能的设计中，位置信息对应的国家信息与第一PLMN对应的国家信息不一致，也可以指位置信息对应的国家与第一PLMN对应的国家不相同，且位置信息对应的位置与第一PLMN对应的国家的国界线之间的距离大于距离阈值。上述方式中，通过允许国家线附近一定范围的终端设备接入，可以避免因为定位误差而给终端设备带来无法接入的情况，从而可以保障终端设备的接入效率，提升用户体验。
在一种可能的设计中，位置信息对应的国家信息与第一PLMN对应的国家信息一致，可以指位置信息对应的国家与第一PLMN对应的国家相同。
在一种可能的设计中，在接入网设备确定终端设备不允许接入第一PLMN之后，接入 网设备向AMF实体发送RRC释放请求消息，RRC释放请求消息用于请求AMF实体释放终端设备。上述设计中，针对初始接入的终端设备，可以先允许其接入网络，当接入网设备确定终端设备选择了不合适的PLMN时，触发AMF实体发起释放流程。
在一种可能的设计中，RRC释放请求消息携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因第一PLMN不是终端设备所处国家的PLMN。
在一种可能的设计中，在接入网设备向AMF实体发送RRC释放请求消息之后，网络设备接收AMF实体发送的上下文释放命令，上下文释放命令用于指示网络设备释放终端设备的RRC连接，且上下文释放命令携带释放原因，释放原因为第一PLMN不是终端设备所处国家的PLMN；接入网设备向终端设备发送RRC释放消息，释放信息携带终端设备允许选择的PLMN标识。上述方式，接入网设备通过释放异常接入的终端设备，可以约束终端设备符合国家安规和监管要求。
在一种可能的设计中，在接入网设备在接收到上下文释放命令后，还可以根据终端设备的位置信息将终端设备切换到目标小区，目标小区的至少一个PLMN标识对应的国家与终端设备的位置信息对应的国家相同。通过上述方式，可以降低终端设备的通信中断，从而提高用户体验。
在一种可能的设计中，接入网设备向目标小区对应的接入网设备或者目标小区对应的接入网设备所连接的AMF实体发送切换原因，切换原因为第一PLMN不是终端设备所处国家的PLMN。
第三方面，本申请提供了一种终端设备接入控制方法，所述方法可以应用于AMF实体，或者芯片，或者芯片组，或者芯片中执行该方法的功能模块等等。以AMF实体为例，该方法包括：AMF实体接收接入网设备发送的RRC释放请求消息，RRC释放请求消息用于请求AMF实体释放终端设备，且RRC释放请求消息携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因第一PLMN不是终端设备所处国家的PLMN。AMF实体向接入网设备发送上下文释放命令，上下文释放命令用于指示网络设备释放终端设备的RRC连接，且上下文释放命令携带释放原因，释放原因为第一PLMN不是终端设备所处国家的PLMN。
本申请实施例中，接入网设备在终端设备初始接入时，可以先允许终端设备接入，并通过判定终端设备的位置信息和选择的PLMN所代表的国家信息是否一致，来对可能异常接入的终端设备进行释放或者小区切换，从而可以在RRC接入阶段阻止终端设备的异常接入。
第四方面，本申请提供了一种终端设备接入控制方法，所述方法可以应用于AMF实体，或者芯片，或者芯片组，或者芯片中执行该方法的功能模块等等。以AMF实体为例，该方法包括：AMF实体接收PLMN信息，PLMN信息用于指示终端设备选择的第一PLMN。AMF实体获取终端设备的位置信息，并根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。
本申请实施例中，终端设备在初始接入时，可以先允许终端设备接入，AMF实体通过判定终端设备的位置信息和选择的PLMN所代表的国家信息是否一致，来对可能异常接入的终端设备进行释放或者小区切换，从而可以在RRC接入阶段阻止终端设备的异常接入。
在一种可能的设计中，AMF实体获取终端设备的位置信息时，可以接收接入网设备发送的位置信息，位置信息为终端设备向接入网设备发送的，或者，位置信息为接入网设备 对终端设备定位得到的。
在一种可能的设计中，AMF实体获取终端设备的位置信息时，可以接收接入网设备透传的NAS信令，该NAS信令携带终端设备的位置信息，且该NAS信令是终端设备发送给接入网设备。通过上述设计，可以保护终端设备的隐私。
在一种可能的设计中，终端设备的位置信息可以是终端设备的GPS位置信息，例如经纬度信息等。通过上述方式，接入网设备可以比较准确的判断出终端设备是否在其选择的PLMN对应国家的境内。
在一种可能的设计中，终端设备的位置信息也可以是终端设备所在虚拟小区的信息。上述方式中，由于虚拟小区可大可小，是一个较为模糊的位置信息，因此通过这种方式可以保护终端设备隐私。
在一种可能的设计中，终端设备的位置信息也可以是终端设备所在国家的国家信息。上述方式中，国家信息是一个比较大范围，因此通过这种方式可以保护终端设备隐私。
在一种可能的设计中，AMF实体根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN时，当位置信息对应的国家信息与第一PLMN对应的国家信息不一致时，AMF实体确定终端设备不允许接入第一PLMN。或者，当位置信息对应的国家信息与第一PLMN对应的国家信息一致时，AMF实体确定终端设备允许接入第一PLMN。通过上述方式，可以避免终端设备接入不是其当前所处国家的PLMN。
在一种可能的设计中，位置信息对应的国家信息与第一PLMN对应的国家信息不一致，可以指位置信息对应的国家与第一PLMN对应的国家不相同。
在一种可能的设计中，位置信息对应的国家信息与第一PLMN对应的国家信息不一致，也可以指位置信息对应的国家与第一PLMN对应的国家不相同，且位置信息对应的位置与第一PLMN对应的国家的国界线之间的距离大于距离阈值。上述方式中，通过允许国家线附近一定范围的终端设备接入，可以避免因为定位误差而给终端设备带来无法接入的情况，从而可以保障终端设备的接入效率，提升用户体验。
在一种可能的设计中，位置信息对应的国家信息与第一PLMN对应的国家信息一致，可以指位置信息对应的国家与第一PLMN对应的国家相同。
在一种可能的设计中，在AMF实体确定终端设备不允许接入第一PLMN之后，AMF实体向接入网设备发送上下文释放命令，上下文释放命令用于指示接入网设备释放终端设备。上述方式AMF实体通过释放异常接入的终端设备，可以约束终端设备符合国家安规和监管要求。
在一种可能的设计中，上下文释放命令携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因为第一PLMN不是终端设备所处国家的PLMN。通过上述方式，使得接入网设备可以根据释放原因、终端设备允许选择的PLMN标识约束终端设备的接入行为。
在一种可能的设计中，在AMF实体确定终端设备不允许接入第一PLMN之后，AMF实体更新终端设备的移动性限制列表，并向接入网设备发送更新后的移动性限制列表，更新后的移动性限制列表包括如下信息中的至少一项：终端设备允许选择的PLMN标识、终端设备不允许选择的PLMN标识。通过上述设计，接入网设备可以根据更新后的移动性限制列表对终端设备进行切换，从而可以降低终端设备的通信中断，进而可以提高用户体验。
第五方面，本申请提供了一种终端设备接入控制方法，所述方法可以应用于接入网设 备，或者芯片，或者芯片组，或者芯片中执行该方法的功能模块等等。以接入网设备为例，该方法包括：接入网设备接收AMF实体发送的上下文释放命令，上下文释放命令用于指示接入网设备释放终端设备，上下文释放命令携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因为终端设备选择的第一PLMN不是终端设备所处国家的PLMN；接入网设备根据上下文释放命令将终端设备切换到目标小区，目标小区的至少一个PLMN标识为终端设备允许选择的PLMN标识。
本申请实施例中，AMF实体通过释放异常接入的终端设备，可以约束终端设备符合国家安规和监管要求。并且通过在上下文释放命令携带释放原因、终端设备允许选择的PLMN标识，使得接入网设备可以根据释放原因、终端设备允许选择的PLMN标识约束终端设备的接入行为。
在一种可能的设计中，接入网设备向目标小区对应的接入网设备或者AMF实体发送切换原因，切换原因为第一PLMN不是终端设备所处国家的PLMN。
第六方面，本申请提供了一种终端设备接入控制方法，所述方法可以应用于接入网设备，或者芯片，或者芯片组，或者芯片中执行该方法的功能模块等等。以接入网设备为例，该方法包括：接入网设备接收AMF发送的移动性限制列表，并根据移动性限制列表将终端设备切换到目标小区或者释放终端设备，移动性限制列表包括如下信息中的至少一项：终端设备允许选择的公共陆地移动网络PLMN标识、终端设备不允许选择的PLMN标识，目标小区的至少一个PLMN标识为终端设备允许选择的PLMN标识。
本申请实施例中，接入网设备可以根据更新后的移动性限制列表对终端设备进行切换，从而可以降低终端设备的通信中断，进而可以提高用户体验。
在一种可能的设计中，接入网设备根据移动性限制列表将终端设备切换到目标小区，包括：接入网设备根据移动性限制列表向目标小区对应的接入网设备或者AMF实体发送切换请求，切换请求用于请求将终端设备切换到目标小区。
在一种可能的设计中，切换请求携带切换原因，切换原因为终端设备选择的PLMN不是终端设备所处国家的PLMN。
在一种可能的设计中，接入网设备根据移动性限制列表释放终端设备，包括：接入网设备根据移动性限制列表向终端设备发送RRC释放消息，RRC释放消息用于释放终端设备的RRC连接。
在一种可能的设计中，RRC释放消息携带如下信息中至少一项：释放原因、终端设备允许选择的PLMN标识，释放原因为终端设备选择的PLMN不是终端设备所处国家的PLMN。上述方式中，通过告诉终端设备哪些PLMN ID是当前位置的终端设备可以选择的，从而可以避免终端设备次再发起RRC建立或者RRC恢复时选择不合适的PLMN，进而可以提高接入速度，提升用户体验。
第七方面，本申请提供了一种终端设备接入控制方法，所述方法可以应用于终端设备，或者芯片，或者芯片组，或者芯片中执行该方法的功能模块等等。以终端设备为例，该方法包括：终端设备向接入网设备发送PLMN信息，PLMN信息用于指示终端设备选择的PLMN；终端设备接收接入网设备发送的RRC释放消息，RRC释放消息用于释放终端设备的RRC连接，且RRC释放消息携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因为终端设备选择的PLMN不是终端设备所处国家的PLMN。
本申请实施例中，当终端设备选择了不合适的PLMN时，接入网设备可以释放该终端 设备，并告诉终端设备哪些PLMN ID是当前位置的终端设备可以选择的，从而可以避免终端设备次再发起RRC建立或者RRC恢复时选择不合适的PLMN，进而可以提高接入速度，提升用户体验。
在一种可能的设计中，在终端设备接收接入网设备发送的RRC释放消息之后，终端设备根据终端设备允许选择的PLMN标识重新选择PLMN。上述设计中，终端设备根据允许选择的PLMN标识重新选择PLMN，可以降低选择不合适PLMN的概率。
第八方面，本申请实施例提供一种通信装置，该装置可以是接入网设备，也可以是接入网设备内的芯片。该装置可以包括处理单元、收发单元和接收单元。应理解的是，这里发送单元和接收单元还可以为收发单元。当该装置是接入网设备时，该处理单元可以是处理器，该发送单元和接收单元可以是收发器；该通信设备还可以包括存储单元，该存储单元可以是存储器；该存储单元用于存储指令，该处理单元执行该存储单元所存储的指令，以使接入网设备执行第一方面或第一方面任意一种可能的设计中的方法，或者，以使接入网设备执行第二方面或第二方面任意一种可能的设计中的方法，或者，以使接入网设备执行第六方面或第六方面任意一种可能的设计中的方法，或者，以使接入网设备执行第五方面或第五方面任意一种可能的设计中的方法。当该装置是接入网设备内的芯片时，该处理单元可以是处理器，该发送单元和接收单元可以是输入/输出接口、管脚或电路等；该处理单元执行存储单元所存储的指令，以使该芯片执行第一方面或第一方面任意一种可能的设计中的方法，或者，以使该芯片执行第二方面或第二方面任意一种可能的设计中的方法，或者，以使该芯片执行第六方面或第六方面任意一种可能的设计中的方法，或者，以使该芯片执行第五方面或第五方面任意一种可能的设计中的方法。该存储单元用于存储指令，该存储单元可以是该芯片内的存储单元(例如，寄存器、缓存等)，也可以是该终端设备内的位于该芯片外部的存储单元(例如，只读存储器、随机存取存储器等)。
第九方面，本申请实施例提供一种通信装置，该装置可以是AMF实体，也可以是AMF实体内的芯片。该装置可以包括处理单元、收发单元和接收单元。应理解的是，这里发送单元和接收单元还可以为收发单元。当该装置是AMF实体时，该处理单元可以是处理器，该发送单元和接收单元可以是收发器；该通信设备还可以包括存储单元，该存储单元可以是存储器；该存储单元用于存储指令，该处理单元执行该存储单元所存储的指令，以使AMF实体执行第三方面或第三方面任意一种可能的设计中的方法，或者，以使AMF实体执行第四方面或第四方面任意一种可能的设计中的方法。当该装置是AMF实体内的芯片时，该处理单元可以是处理器，该发送单元和接收单元可以是输入/输出接口、管脚或电路等；该处理单元执行存储单元所存储的指令，以使该芯片执行第三方面或第三方面任意一种可能的设计中的方法，或者，以使该芯片执行第四方面或第四方面任意一种可能的设计中的方法。该存储单元用于存储指令，该存储单元可以是该芯片内的存储单元(例如，寄存器、缓存等)，也可以是该终端设备内的位于该芯片外部的存储单元(例如，只读存储器、随机存取存储器等)。
第十方面，本申请实施例提供一种通信装置，该装置可以是终端设备，也可以是终端设备内的芯片。该装置可以包括处理单元、收发单元和接收单元。应理解的是，这里发送单元和接收单元还可以为收发单元。当该装置是终端设备时，该处理单元可以是处理器，该发送单元和接收单元可以是收发器；该通信设备还可以包括存储单元，该存储单元可以是存储器；该存储单元用于存储指令，该处理单元执行该存储单元所存储的指令，以使终 端设备执行第七方面或第七方面任意一种可能的设计中的方法。当该装置是终端设备内的芯片时，该处理单元可以是处理器，该发送单元和接收单元可以是输入/输出接口、管脚或电路等；该处理单元执行存储单元所存储的指令，以使该芯片执行第七方面或第七方面任意一种可能的设计中的方法。该存储单元用于存储指令，该存储单元可以是该芯片内的存储单元(例如，寄存器、缓存等)，也可以是该终端设备内的位于该芯片外部的存储单元(例如，只读存储器、随机存取存储器等)。
第十一方面，本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序在计算机上运行时，使得计算机执行上述第一方面至第七方面中任一方面的方法。
第十二方面，本申请实施例还提供一种包含程序的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面至第七方面中任一方面的方法。
第十三方面，提供了一种通信装置，包括：处理器、通信接口和存储器。通信接口用于该装置与其他装置之间传输信息、和/或消息、和/或数据。该存储器用于存储计算机执行指令，当该装置运行时，该处理器执行该存储器存储的该计算机执行指令，以使该装置执行如上述第一方面及其任一可能的设计、第二方面及其任一可能的设计的方法、第五方面及其任一可能的设计的方法、第六方面及其任一可能的设计的方法。
第十四方面，提供了一种通信装置，包括：处理器、通信接口和存储器。通信接口用于该装置与其他装置之间传输信息、和/或消息、和/或数据。该存储器用于存储计算机执行指令，当该装置运行时，该处理器执行该存储器存储的该计算机执行指令，以使该装置执行如上述第三方面及其任一可能的设计、第四方面及其任一可能的设计的方法。
第十五方面，提供了一种通信装置，包括：处理器、通信接口和存储器。通信接口用于该装置与其他装置之间传输信息、和/或消息、和/或数据。该存储器用于存储计算机执行指令，当该装置运行时，该处理器执行该存储器存储的该计算机执行指令，以使该装置执行如上述第七方面及其任一可能的设计。
第十六方面，本申请实施例提供的一种芯片，所述芯片与存储器耦合，执行上述第一方面及其任一可能的设计、第二方面及其任一可能的设计的方法、第五方面及其任一可能的设计的方法、第六方面及其任一可能的设计的方法。
第十七方面，本申请实施例提供的一种芯片，所述芯片与存储器耦合，执行上述第三方面及其任一可能的设计、第四方面及其任一可能的设计的方法。
第十八方面，本申请实施例提供的一种芯片，所述芯片与存储器耦合，执行上述第七方面及其任一可能的设计。
第十九方面，本申请实施例提供一种芯片，包括通信接口和至少一个处理器，所述处理器运行以执行上述第一方面及其任一可能的设计、第二方面及其任一可能的设计的方法、第五方面及其任一可能的设计的方法、第六方面及其任一可能的设计的方法。
第二十方面，本申请实施例提供一种芯片，包括通信接口和至少一个处理器，所述处理器运行以执行上述第三方面及其任一可能的设计、第四方面及其任一可能的设计的方法。
第二十一方面，本申请实施例提供一种芯片，包括通信接口和至少一个处理器，所述处理器运行以执行上述第七方面及其任一可能的设计。
第二十二方面，本申请实施例还提供了一种通信系统，包括第一方面所述的接入网设备和第七方面所述的终端设备。
第二十三方面，本申请实施例还提供了一种通信系统，包括第二方面所述的接入网设备和第三方面所述的AMF实体，还可以包括第七方面所述的终端设备。
第二十四方面，本申请实施例还提供了一种通信系统，包括第四方面所述的AMF实体和第五方面所述的接入网设备，还可以包括第七方面所述的终端设备。
第二十五方面，本申请实施例还提供了一种通信系统，包括第四方面所述的AMF实体和第六方面所述的接入网设备，还可以包括第七方面所述的终端设备。
需要说明的是，本申请实施例中“耦合”是指两个部件彼此直接或间接地结合。
附图说明
图1为本申请实施例提供的一种协议栈示意图；
图2为本申请实施例提供的一种卫星的示意图；
图3为本申请实施例提供的一种接入网设备的结构示意图；
图4为本申请实施例提供的一种NTN应用场景的示意图；
图5为本申请实施例提供的另一种NTN应用场景的示意图；
图6为本申请实施例提供的另一种NTN应用场景的示意图；
图7为本申请实施例提供的一种接口示意图；
图8为本申请实施例提供的另一种NTN应用场景的示意图；
图9为本申请实施例提供的另一种NTN应用场景的示意图；
图10为本申请实施例提供的一种终端设备接入控制方法的流程示意图；
图11为本申请实施例提供的一种虚拟小区的示意图；
图12为本申请实施例提供的一种终端设备接入过程的示意图；
图13为本申请实施例提供的一种终端设备接入控制方法的流程示意图；
图14为本申请实施例提供的一种终端设备接入过程的示意图；
图15为本申请实施例提供的一种终端设备接入控制方法的流程示意图；
图16为本申请实施例提供的一种终端设备接入过程的示意图；
图17为本申请实施例提供的一种终端设备接入过程的示意图；
图18为本申请实施例提供的一种通信装置的结构示意图；
图19为本申请实施例提供的另一种通信装置的结构示意图；
图20为本申请实施例提供的一种接入网设备的结构示意图；
图21为本申请实施例提供的一种终端设备的结构示意图。
具体实施方式
以下，对本申请中的部分用语进行解释说明，以便于本领域技术人员理解。
1、非接入层(non-access stratum，NAS)和接入层(access stratum，AS)
在长期演进(long term evolution，LTE)和新无线电(new radio，NR)中，UE和基站/接入和移动性管理功能(access and mobility management function，AMF)实体通过空口进行通信。为了更好地对数据进行处理，网络协议定义了若干协议栈，每个栈的功能各不相同，例如，如图1所示。其中，NAS是UE和AMF之间的信令通道，具体过程可以是UE向基站发送NAS消息，基站将NAS消息透传给AMF，基站在透传的过程中不对NAS 消息进行解析。NAS主要负责一些管理功能，如PLMN选择，手动选择，接入控制，注册，签约信息等，具体的过程可以和别的协议层(如AS)协同进行。
AS是指除NAS层之外的协议层，可以包括无线资源控制(radio resource control，RRC)、分组数据汇聚协议(packet data convergence protocol，PDCP)、无线链路控制(radio link control，RLC)、媒体接入控制(medium access control，MAC)、物理层(physical layer，PHY)，AS主要负责切换，加密，数据重传，排序，发送等功能。
2、PLMN
日常生活中为终端设备提供网络服务的一般是PLMN。PLMN由政府或它所批准的经营者，为公众提供陆地移动通信业务目的而建立和经营的网络。可以用不同的PLMN标识(identification，ID)来区分不同的PLMN网络。PLMN标识由移动国家号码(mobile contrary code，MCC)和移动网号(mobile net code，MNC)组成。其中，MCC唯一表示移动用户的所属国家，例如中国的MCC为460。MNC唯一表示该国家中的网络，例如中国移动的MNC为00，中国联通的MNC为01。
UE在接入基站时需要选择一个网络，选网的过程则为PLMN选择。PLMN选择可以如下：
A1，UE的AS根据自己能力扫描所有NR频带(band)的射频(radio frequency，RF)信道(channel)发现可用的PLMN。UE会找出每个频点中RSRP最好的小区然后读该小区的系统消息块1(system information block 1，SIB1)得到PLMN ID。
A2，UE的AS向UE的NAS上报PLMN列表(list)，PLMN list包括UE的AS获取的PLMN ID。
A3，UE的NAS在收到UE的AS上报的PLMN list后，将选择其中一个PLMN ID作为UE使用的PLMN。
UE在选择PLMN时，搜索的PLMN可以为：已登记PLMN(registered PLMN，RPLMN)，RPLMN为UE关机或者脱网前注册的PLMN；等效PLMN(equivalent PLMN，EPLMN)，EPLMN为与UE当前选择的PLMN优先级相同的PLMN；归属地PLMN(home PLMN，HPLMN)，该HPLMN的标识存储在手机客户识别模块(subscriber identity module，SIM)卡中，每个SIM卡只有一个HPLMN，出厂时候烧进去的；等效HPLMN(equivalent HPLMN，EHPLMN)，与HPLMN优先级相同的PLMN。
3、NTN通信
NTN通信也可以称为卫星通信。卫星通信的架构分为两大类，一是透明转发(transparent)架构，此时卫星只做中继(relay)或者放大器，可以做射频过滤、放大等，将信号重新生成；二是再生(regenerative)架构，这时候卫星可以做新一代节点B(generated node B，gNB)、分布式单元(distributed unit，DU)、relay，这里的relay和第一类中的relay不同，此时不再是单纯relay，还具有信号处理功能的，类似接入回传一体化(integrated access and backhaul,IAB)节点或者其它的中继节点。其中，当卫星做gNB、DU、IAB或者其它的中继节点时，它的功能就类似于普通的gNB、DU、IAB或者其它的中继节点。
NTN通信通过将接入网设备或者部分接入网设备的功能部署在非地面的设备(例如高空平台或者卫星等)上为终端设备提供无缝覆盖，由于非地面设备受自然灾害的影响较小，能提升通信系统的可靠性。为便于说明和理解本申请实施例的方案，本申请后续将以接入网设备部署在卫星上的NTN通信系统为例进行说明。并且，为描述方便，本申请后续将“卫 星上的接入网设备”用“卫星”进行替代说明，将“NTN通信”用“卫星通信”进行替代说明。也即，本申请后续涉及的终端设备与卫星之间的通信，实际上指的是终端设备与卫星上的接入网设备之间的通信。这里统一说明，后续不再赘述。
按照卫星高度，即卫星轨位高度，可以将卫星系统分为高椭圆轨道(highly elliptical orbiting，HEO)卫星、地球同步(geostationary earth orbit，GEO)卫星、中轨(medium earth orbit，MEO)卫星和低轨(low-earth orbit，LEO)卫星，如图2所示。此外，NTN系统还可以包括高空平台(high altitude platform station，HAPS)通信系统等空中网络设备，本发明涉及的网络设备不限于以上举例。
需要说明的是，随着技术的不断发展，本申请实施例的术语有可能发生变化，但都在本申请的保护范围之内。
为了使本申请实施例的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施例作进一步地详细描述。
本申请实施例中涉及的网元包括网络设备和终端设备。
网络设备可以是接入网设备，也可以是核心网设备。其中，核心网设备可以是核心网中的功能网元，例如，可以是接入和移动性管理功能。所述接入和移动性管理功能，可用于对所述终端设备的接入控制和移动性进行管理，在实际应用中，其包括了LTE中网络框架中移动管理实体(mobility management entity，MME)里的移动性管理功能，并加入了接入管理功能，具体可以负责所述终端设备的注册、移动性管理、跟踪区更新流程、可达性检测、会话管理功能网元的选择、移动状态转换管理等。例如，在5G中，所述接入和移动性管理功能可以是AMF网元。在未来通信，如6G中，所述接入和移动性管理功能仍可以是AMF网元，或有其它的名称，本申请不做限定。
接入网设备是网络侧中一种用于发射或接收信号的实体，如新一代基站(generation Node B，gNodeB)。接入网设备可以是用于与移动设备通信的设备。接入网设备可以是无线局域网(wireless local area networks，WLAN)中的接入点(access point，AP)，可以是长期演进(long term evolution，LTE)中的演进型基站(evolutional Node B，eNB或eNodeB)，或者中继站或接入点或接入回传一体化(integrated access and backhaul，IAB)，或者车载设备、可穿戴设备以及未来5G网络中的接入网设备或者未来演进的公共陆地移动网络(public land mobile network，PLMN)网络中的接入网设备，或NR系统中的gNB等。另外，在本申请实施例中，接入网设备为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与接入网设备进行通信。本申请实施例中的接入网设备可以是指集中单元(central unit，CU)或者DU。或者，接入网设备也可以是CU和DU组成的，例如，如图3所示。其中，CU和DU在物理上可以是分离的，也可以部署在一起，本申请实施例对此不做具体限定。一个CU可以连接一个DU，或者也可以多个DU共用一个CU，可以节省成本，以及易于网络扩展。CU和DU的切分可以按照协议栈切分，其中一种可能的方式是将无线资源控制(radio resource control，RRC)、业务数据适配协议栈(service data adaptation protocol，SDAP)以及分组数据汇聚协议(packet data convergence protocol，PDCP)层部署在CU，其余的无线链路控制(radio link control，RLC)层、介质访问控制(media access control，MAC)层以及物理层部署在DU。本发明中并不完全限定上述协议栈切分方式，还可以有其它的切分方式。CU和DU之间通过F1接口连接。CU代表gNB通过Ng接口和核心网连接。本申请实施例中的接入网设备可以是指集 中式单元控制面(CU-CP)节点或者集中式单元用户面(CU-UP)节点，或者，网络设备也可以是CU-CP和CU-UP。其中CU-CP负责控制面功能，主要包含RRC和PDCP-C。PDCP-C主要负责控制面数据的加解密，完整性保护，数据传输等。CU-UP负责用户面功能，主要包含SDAP和PDCP-U。其中SDAP主要负责将核心网的数据进行处理并将流(flow)映射到承载。PDCP-U主要负责数据面的加解密，完整性保护，头压缩，序列号维护，数据传输等。其中CU-CP和CU-UP通过E1接口连接。CU-CP代表gNB通过Ng接口和核心网连接。通过F1-C(控制面)和DU连接。CU-UP通过F1-U(用户面)和DU连接。当然还有一种可能的实现是PDCP-C也在CU-UP。本申请实施例所提及的接入网设备可以为包括CU、或DU、或包括CU和DU的设备、或者控制面CU节点(CU-CP节点)和用户面CU节点(CU-UP节点)以及DU节点的设备。此外，在其它可能的情况下，接入网设备可以是其它为终端设备提供无线通信功能的装置。本申请的实施例对接入网设备所采用的具体技术和具体设备形态不做限定。为方便描述，本申请实施例中，为终端设备提供无线通信功能的装置称为接入网设备。
终端设备可以是能够接收接入网设备调度和指示信息的无线终端设备，无线终端设备可以是指向用户提供语音和/或数据连通性的设备，或具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端设备可以经无线接入网(如，radio access network，RAN)与一个或多个核心网或者互联网进行通信，无线终端设备可以是移动终端设备，如移动电话(或称为“蜂窝”电话，手机(mobile phone))、计算机和数据卡，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(personal communications service，PCS)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、平板电脑(Pad)、带无线收发功能的电脑等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile station，MS)、远程站(remote station)、接入点(access point，AP)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户站(subscriber station，SS)、用户端设备(customer premises equipment，CPE)、终端(terminal)、用户设备(user equipment，UE)、移动终端(mobile terminal，MT)等。无线终端设备也可以是可穿戴设备以及下一代通信系统，例如，5G网络中的终端设备或者未来演进的PLMN网络中的终端设备，NR通信系统中的终端设备等。
此外，本申请实施例还可以适用于面向未来的其他通信技术。本申请描述的网络架构以及业务场景是为了更加清楚的说明本申请的技术方案，并不构成对本申请提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请提供的技术方案对于类似的技术问题，同样适用。
需要说明的是，本申请实施例不限定以上通信系统的类型和制式。例如：所述通信系统可以为：第五代(The 5th Generation，5G)通信系统、LTE通信系统等。
本申请实施例可以应用于第四代移动通信系统(the fourth generation，4G)系统，5G系统，NTN系统，车到万物(vehicle to everything，V2X)，长期演进-车联网(LTE-vehicle，LTE-V)，车到车(vehicle to vehicle，V2V)，车联网，机器类通信(Machine Type Communications，MTC)，物联网(internet of things，IoT)，长期演进-机器到机器 (LTE-machine to machine，LTE-M)，机器到机器(machine to machine，M2M)，物联网，或者将来的移动通信系统。
下面结合附图分别对每个应用场景进行具体介绍。
示例性的，在参阅图4所示应用场景中，卫星可以作为基站与核心网中的AMF实体建立N2或者Ng连接，为终端设备提供无线接入服务。
示例性的，在通信系统中，RAN中的两个基站之间可以建立X2或Xn连接，以传输小区信息等数据，从而实现终端设备的小区重选和切换。例如，RAN中建立连接的两个基站可以为：作为基站的卫星与作为基站的卫星，作为基站的卫星与传统的基站，由多个部分功能组成的基站与传统的基站之间，或者由多个部分功能组成的基站与作为基站的卫星之间等。在图5所示应用场景中，两个作为基站的卫星之间可以建立连接，以进行数据和信令的交互。
示例性的，在支持载波聚合的通信系统中，可以引用双连接(dual-connectivity，DC)技术实现，从而为用户提供更高的速率和提高频谱效率，在该通信系统中，支持双连接的终端设备可以同时连接两个基站，以增加单个用户的吞吐率。终端设备同时连接的两个基站之间也需要通过相应的接口建立连接，以进行数据和信令的交互，参阅图6所示。需要说明的时，终端设备同时连接的两个基站中一个作为主基站，另外一个作为辅基站。当基站连接的核心网不同以及两个基站的类型的不同，AMF实体与基站之间的接口、两个基站之间的接口也会相应的变化，如图7中各个接口示意图所示。
示例性的，在图8所示的应用场景中，卫星还可以作为终端设备和基站之间的中继设备或者作为基站的射频拉远单元(remote radio unit，RRU)。在该场景中，卫星主要负责L1中继，用于进行物理层转发，且高层不可见。
示例性的，在图9所示的应用场景中，RAN中的基站拆分为DU和CU两个功能部分，其中卫星可以作为DU。在该应用场景中，DU和CU之间的接口为F1接口。
还需要说明的是，以上图4-图9所示的应用场景仅为本申请适用的应用场景示例，且以上示例中以卫星为例。
目前，UE在进行PLMN选择时，选择的PLMN ID主要满足的条件为：该PLMN ID对应的PLMN为RPLMN或者EPLMN或者HPLMN或者EHPLMN。UE在进行小区选择和重选时，所选择小区主要满足的条件为：该小区的PLMN ID中至少有一个PLMN ID对应的PLMN是RPLMN或者EPLMN或者HPLMN或者EHPLMN。
在地面通信中，在RRC建立或者RRC恢复过程中，UE会在RRC建立完成消息或者RRC恢复完成消息中携带UE选择的PLMN ID，只要UE选择的PLMN ID满足上述条件，网络允许UE的接入。
但是在卫星通信中，卫星覆盖的通信范围非常大，如GEO卫星，一个波束的面积就可达数百千米，在国家密集的区域，很可能一个卫星小区就会覆盖数个国家。并且，由于一个卫星可以被多个国家的核心网共享使用，因此一个卫星小区会广播多个国家的核心网PLMN ID导致UE在做PLMN选择和小区选择/重选的过程中，很可能选择了不是其所处国家的PLMN，从而难以正常通信。
基于此，本申请实施例提供一种终端设备接入控制方法及装置，用以解决NTN中，终端设备选择的PLMN可能不是其所处国家的PLMN，从而难以正常通信的问题。其中，方法和装置是基于同一发明构思的，由于方法及装置解决问题的原理相似，因此装置与方 法的实施可以相互参见，重复之处不再赘述。
应理解，本申请实施例中“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A、B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一(项)个”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a、b或c中的至少一项(个)，可以表示：a，b，c，a和b，a和c，b和c，或a、b和c，其中a、b、c可以是单个，也可以是多个。
需要理解的是，在本申请的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
下面结合附图对本申请提供的终端设备接入控制方法进行具体说明。
实施例一：
如图10所示，为本申请实施例提供的一种终端设备接入控制方法。本申请提供的终端设备接入控制方法可以应用于NTN中。该方法可以应用于处于RRC空闲态的终端设备建立RRC连接，或者，处于RRC非激活态的终端设备恢复RRC连接的场景中。终端设备接入控制方法具体可以包括：
S1001，终端设备向接入网设备发送PLMN信息，该PLMN信息用于指示终端设备选择的第一PLMN。相应的，接入网设备接收终端设备发送的PLMN信息。
示例性的，接入网设备可以是卫星，例如，接入网设备可以是作为独立的接入网设备，与核心网相连的卫星。或者，接入网设备也可以是作为中继设备，与地面基站相连的卫星。或者，接入网设备也可以是作为DU，与地面CU相连的卫星，等等。
一种实现方式中，终端设备可以向接入网设备发送RRC建立完成消息或者RRC恢复完成消息，该RRC建立完成消息或者RRC恢复完成消息携带PLMN信息。
可选的，在步骤S1001之前，终端设备可以向接入网设备发送RRC建立请求或者RRC恢复请求，该RRC建立请求用于请求接入网设备建立RRC连接，RRC恢复请求用于请求接入网设备恢复RRC连接。
进一步的，接入网设备在接收到终端设备发送的RRC建立请求或者RRC恢复请求后，还可以向终端设备发送RRC建立消息或者RRC恢复消息，该RRC建立消息或者RRC恢复消息用于指示终端设备建立信令无线承载1(signalling radio bearer 1，SRB1)。
S1002，接入网设备获取终端设备的位置信息。
一种可能的实现方式中，接入网设备可以对终端设备进行定位，得到位置信息。示例性的，接入网设备可以对终端设备进行定位时，可以通过如下方式实现：终端设备测量如下参数中至少一项：各接入网设备的时间提前量(timing advance，TA)、各接入网设备的信号强度差、各接入网设备信号的到达角度(angle of arrival，AoA)等，终端设备向接入网设备上报测量的参数，接入网设备根据终端设备上报的参数确定终端设备的位置。
另一种可能的实现方式中，接入网设备可以接收终端设备发送的位置信息。例如，终端设备向接入网设备发送RRC建立完成消息或者RRC恢复完成消息时，RRC建立完成消息或者RRC恢复完成消息可以携带终端设备的位置信息。
再一种可能的实现方式中，终端设备可以向接入网设备上报自身的位置信息，若接入网设备不信任终端设备上报的位置信息，接入网设备可以对终端设备进行定位。
示例性的，终端设备的位置信息可以是终端设备的全球定位系统(global positioning system，GPS)位置信息，例如经纬度信息等。
或者，终端设备的位置信息也可以是终端设备所在虚拟小区的信息，接入网设备覆盖的一块区域(均匀或者非均匀)划分成多个虚拟小区，例如图11所示。这些虚拟小区可以尽可能地与国家边界相对应，虚拟小区的信息可以在小区的系统消息里广播。上述方式中，由于虚拟小区可大可小，是一个较为模糊的位置信息，因此通过这种方式可以保护终端设备隐私。
或者，终端设备的位置信息也可以是终端设备所在国家的国家信息。例如，终端设备可以通过小区广播的系统消息获取国界线信息，并通过定位获取自身的GPS位置信息。终端设备根据国界线信息以及自身的GPS位置信息可以确定自身所处的国家。
S1003，接入网设备根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。
一种实现方式中，当位置信息对应的国家信息与第一PLMN对应的国家信息不一致时，接入网设备可以确定终端设备不允许接入第一PLMN。
当位置信息对应的国家信息与第一PLMN对应的国家信息一致时，接入网设备可以确定终端设备允许接入第一PLMN。
一种示例性说明中，位置信息对应的国家信息与第一PLMN对应的国家信息不一致，可以指位置信息对应的国家与第一PLMN对应的国家不相同。位置信息对应的国家信息与第一PLMN对应的国家信息一致，可以指位置信息对应的国家与第一PLMN对应的国家相同。例如，若位置信息对应的国家为甲国，第一PLMN对应的国家为乙国，可以认为位置信息对应的国家信息与第一PLMN对应的国家信息不一致。若位置信息对应的国家为甲国，第一PLMN对应的国家为甲国，可以认为位置信息对应的国家信息与第一PLMN对应的国家信息一致。
另一种示例性说明中，位置信息对应的国家信息与第一PLMN对应的国家信息不一致，也可以指位置信息对应的国家与第一PLMN对应的国家不相同，且位置信息对应的位置与第一PLMN对应的国家的国界线之间的距离大于距离阈值。例如，假设距离阈值为50m，若位置信息对应的国家为甲国，第一PLMN对应的国家为乙国，且位置信息对应的位置与乙国的国家线之间的距离大于50m，则可以认为位置信息对应的国家信息与第一PLMN对应的国家信息不一致。若位置信息对应的国家为甲国，第一PLMN对应的国家为乙国，但是位置信息对应的位置与乙国的国家线之间的距离小于50m，则可以认为位置信息对应的国家信息与第一PLMN对应的国家信息一致。上述方式中，通过允许国家线附近一定范围的终端设备接入，可以避免因为定位误差而给终端设备带来无法接入的情况，从而可以保障终端设备的接入效率，提升用户体验。
在一些实施例中，接入网设备在确定终端设备不允许接入第一PLMN之后，可以向终端设备发送RRC释放消息，RRC释放消息用于释放终端设备的RRC连接。终端设备在接收到RRC释放消息后可以进入RRC空闲态或者RRC非激活态。
示例性的，RRC释放消息可以携带如下信息中至少一项信息：释放原因、终端设备允许选择的一个或者多个PLMN标识，释放原因为第一PLMN不是终端设备所处国家的PLMN。上述方式中，通过告诉终端设备哪些PLMN ID是当前位置的终端设备可以选择的，从而可以避免终端设备次再发起RRC建立或者RRC恢复时选择不合适的PLMN，进而可 以提高接入速度，提升用户体验。
在另一些实施例中，接入网设备在确定终端设备不允许接入第一PLMN之后，还可以根据终端设备的位置信息将终端设备切换到目标小区，目标小区的至少一个PLMN标识对应的国家与终端设备的位置信息对应的国家相同。
一种实现方式中，接入网设备还可以向目标小区对应的接入网设备或者目标小区对应的接入网设备所连接的AMF实体发送切换原因，切换原因为第一PLMN不是终端设备所处国家的PLMN。
例如，接入网设备可以向目标小区对应的接入网设备或者目标小区对应的接入网设备所连接的AMF实体发送切换请求，该切换请求用于请求将终端设备切换到目标小区，该切换请求中携带切换原因，切换原因为第一PLMN不是终端设备所处国家的PLMN。
在一些实施例中，接入网设备可以根据记录的各个小区的PLMN标识确定目标小区，并向目标小区对应的接入网设备或者目标小区对应的接入网设备所连接的AMF实体发送切换请求。
可选的，接入网设备还可以接收目标小区对应的接入网设备或者目标小区对应的接入网设备所连接的AMF实体发送的切换失败消息，切换失败消息可以携带拒绝原因，该拒绝原因为目标小区的所有PLMN标识都不是终端设备所处国家的PLMN标识。由于小区的PLMN标识可能发生变化，若接入网设备未及时更新记录，则可能选择不合适的目标小区，这种情况下，目标小区对应的接入网设备或者目标小区对应的接入网设备所连接的AMF实体可以向该接入网设备发送切换失败消息，还可以通知该接入网设备切换失败的原因为目标小区的所有PLMN标识都不是终端设备所处国家的PLMN标识。
此外，接入网设备还可以向终端设备发送终端设备允许选择的PLMN标识。
在一些实施例中，接入网设备在确定终端设备允许接入第一PLMN之后，接入网设备可以与AMF实体建立该终端设备的上下文。
本申请实施例一中，接入网设备通过判定终端设备的位置信息和选择的PLMN所代表的国家信息是否一致，来对可能异常接入的终端设备进行释放或者小区切换，从而可以在RRC接入阶段阻止终端设备的异常接入。并且，接入网设备还可以告知终端设备可以选择的PLMN，从而可以避免终端设备再选不合适的PLMN，从而有利于提高PLMN选择的速度。
为了更好的理解本申请实施例提供的方法，下面结合处于RRC空闲态的终端设备建立RRC连接场景对终端设备接入过程进行详尽描述。终端设备接入过程可以如图12所示：
S1201，终端设备向接入网设备发送RRC建立请求消息，RRC建立请求消息用于请求接入网设备建立与终端设备之间的RRC连接。
S1202，接入网设备向终端设备发送RRC建立消息，RRC建立消息用于指示终端设备建立RRC连接。
S1203，终端设备向接入网设备发送RRC建立完成消息，RRC建立完成消息用于通知接入网设备：终端设备已建立RRC连接，且RRC建立完成消息携带终端设备选择的第一PLMN的PLMN ID。
S1204，接入网设备根据终端设备的位置信息以及第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。若是，则执行步骤S1205，若否，执行步骤S1206或者S1207。
终端设备的位置信息可以通过如下任一种方式得到：
方式一，终端设备通过RRC建立完成消息或者RRC建立请求消息向接入网设备上报位置信息。
方式二，终端设备的位置信息也可以是接入网设备对终端设备进行定位得到的。
方式三，终端设备通过RRC建立完成消息向接入网设备上报位置信息，接入网设备在接收到位置信息后对终端设备进行定位。
S1205，接入网设备与AMF实体建立该终端设备的上下文。
S1206，接入网设备向终端设备发送RRC释放消息，RRC释放消息用于指示终端设备释放RRC连接。
可选的，RRC释放消息可以携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因为第一PLMN不是终端设备所处国家的PLMN。
S1207，接入网设备将终端设备切换到目标小区，目标小区的至少一个PLMN标识对应的国家与终端设备的位置信息对应的国家相同。
可选的，接入网设备在发送切换请求时可以在切换请求中携带切换原因，切换原因为第一PLMN不是终端设备所处国家的PLMN。
此外，接入网设备还可以向终端设备发送终端设备允许选择的PLMN标识。
可以理解的，处于RRC非激活态的终端设备恢复RRC连接场景下终端设备接入过程，与处于RRC空闲态的终端设备建立RRC连接场景下终端设备接入过程类似，区别在于发送的消息不同，例如，处于RRC空闲态的终端设备建立RRC连接场景下，步骤S1201中终端设备发送的是RRC建立请求消息，处于RRC非激活态的终端设备恢复RRC连接场景下步骤S1201中终端设备发送的是RRC恢复请求消息。又例如，处于RRC空闲态的终端设备建立RRC连接场景下，步骤S1202中接入网设备发送的是RRC建立消息，处于RRC非激活态的终端设备恢复RRC连接场景下步骤S1202中接入网设备发送的是RRC恢复消息。再例如，处于RRC空闲态的终端设备建立RRC连接场景下，步骤S1203中终端设备发送的是RRC建立完成消息，处于RRC非激活态的终端设备恢复RRC连接场景下步骤S1203中终端设备发送的是RRC恢复完成消息。重复之处不再赘述。
实施例二：
如图13所示，为本申请实施例提供的一种终端设备接入控制方法。本申请提供的终端设备接入控制方法可以应用于NTN中。该方法可以应用于终端设备初始接入的场景中。终端设备接入控制方法具体可以包括：
S1301，终端设备向接入网设备发送PLMN信息，该PLMN信息用于指示终端设备选择的第一PLMN。相应的，接入网设备接收终端设备发送的PLMN信息。
终端设备向接入网设备发送PLMN信息的过程，具体可以参阅上述步骤S1001，重复之处不再赘述。
可选的，在步骤S1301之后，接入网设备可以建立与终端设备之间的RRC连接，并在AMF实体中建立终端设备的上下文。
S1302，接入网设备获取终端设备的位置信息。
接入网设备获取终端设备的位置信息的过程，具体可以参阅上述步骤S1002，重复之处不再赘述。
需要说明的是，接入网设备在AMF实体中建立终端设备的上下文与对终端设备进行 定位没有严格的先后顺序，接入网设备可以先在AMF实体中建立终端设备的上下文，后对终端设备进行定位，也可以先对终端设备进行定位，再在AMF实体中建立终端设备的上下文，或者在AMF实体中建立终端设备的上下文以及对终端设备进行定位同时执行，这里不做具体限定。
S1303，接入网设备根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。
接入网设备根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN的过程，具体可以参阅上述步骤S1003，重复之处不再赘述。
在一些实施例中，接入网设备在确定终端设备不允许接入第一PLMN之后，可以向AMF实体发送RRC释放请求消息，RRC释放请求消息用于请求AMF实体释放终端设备。
示例性的，RRC释放请求消息可以携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因第一PLMN不是终端设备所处国家的PLMN。
进一步的，在接入网设备向AMF实体发送RRC释放请求消息之后，AMF实体可以向接入网设备发送上下文释放命令，上下文释放命令用于指示接入网设备释放终端设备的RRC连接，且上下文释放命令携带释放原因，释放原因为第一PLMN不是终端设备所处国家的PLMN。
一种可能的实施方式中，接入网设备在接收到上下文释放命令后，可以向终端设备发送RRC释放消息，释放信息携带终端设备允许选择的PLMN标识。
示例性的，RRC释放消息可以携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因为第一PLMN不是终端设备所处国家的PLMN。上述方式中，通过告诉终端设备哪些PLMN ID是当前位置的终端设备可以选择的，从而可以避免终端设备次再发起RRC建立或者RRC恢复时选择不合适的PLMN，进而可以提高接入速度，提升用户体验。
另一种可能的实施方式中，接入网设备在接收到上下文释放命令后，还可以根据终端设备的位置信息将终端设备切换到目标小区，目标小区的至少一个PLMN标识对应的国家与终端设备的位置信息对应的国家相同。
一种实现方式中，接入网设备还可以向目标小区对应的接入网设备或者目标小区对应的接入网设备所连接的AMF实体发送切换原因，切换原因为第一PLMN不是终端设备所处国家的PLMN。
例如，接入网设备可以向目标小区对应的接入网设备或者目标小区对应的接入网设备所连接的AMF实体发送切换请求，该切换请求用于请求将终端设备切换到目标小区，该切换请求中携带切换原因，切换原因为第一PLMN不是终端设备所处国家的PLMN。
接入网设备根据终端设备的位置信息将终端设备切换到目标小区的过程，具体可以参阅上述实施例一的相关描述，这里不再重复赘述。
此外，接入网设备还可以向终端设备发送终端设备允许选择的PLMN标识。
本申请实施例二中，接入网设备在终端设备初始接入时，可以先允许终端设备接入，并通过判定终端设备的位置信息和选择的PLMN所代表的国家信息是否一致，来对可能异常接入的终端设备进行释放或者小区切换，从而可以在RRC接入阶段阻止终端设备的异常接入。并且，接入网设备还可以告知终端设备可以选择的PLMN，从而可以避免终端设备再选不合适的PLMN，从而有利于提高PLMN选择的速度。
为了更好的理解本申请实施例提供的方法，下面结合处于具体场景对终端设备接入过程进行详尽描述。终端设备接入过程可以如图14所示：
S1401～S1403，具体可以参阅上述步骤S1201～S1203，重复之处不再赘述。
S1404，接入网设备向AMF实体发送初始UE消息。
S1405，AMF实体向接入网设备发送初始上下文建立请求。
S1406，接入网设备向AMF实体发送初始上下文建立响应。
S1407，接入网设备根据终端设备的位置信息以及第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。若是，则执行步骤S1408，若否，执行步骤S1409或者S1410～S1413。
可选的，接入网设备获取终端设备的位置信息的方式可以为：终端设备通过RRC建立请求消息或者RRC建立完成消息向接入网设备上报终端设备的位置信息。
或者，接入网设备获取终端设备的位置信息的方式也可以为：接入网设备对终端设备进行定位，得到终端设备的位置信息。
或者，终端设备通过RRC建立完成消息向接入网设备上报位置信息，接入网设备在接收到位置信息后对终端设备进行定位。
S1408，具体可以参阅上述步骤S1205，重复之处不再赘述。
S1409，具体可以参阅上述步骤S1207，重复之处不再赘述。
S1410，接入网设备向AMF实体发送上下文释放请求，上下文释放请求用于请求AMF实体释放终端设备的上下文。
可选的，上下文释放请求可以携带释放原因，释放原因为第一PLMN不是终端设备所处国家的PLMN。上下文释放请求还可以携带终端设备允许选择的PLMN ID。
S1411，AMF实体向接入网设备发送上下文释放命令，上下文释放命令用于指示接入网设备释放终端设备的上下文。
可选的，上下文释放命令可以携带释放原因，释放原因为第一PLMN不是终端设备所处国家的PLMN。上下文释放命令还可以携带终端设备允许选择的PLMN ID。
S1412，接入网设备向终端设备发送RRC释放消息。
可选的，RRC释放消息可以携带释放原因，释放原因为第一PLMN不是终端设备所处国家的PLMN。RRC释放消息还可以携带终端设备允许选择的PLMN ID。
S1413，接入网设备向AMF实体发送上下文释放完成消息，上下文释放完成消息用于通知AMF实体：终端设备的上下文已释放。
实施例三：
如图15所示，为本申请实施例提供的一种终端设备接入控制方法。本申请提供的终端设备接入控制方法可以应用于NTN中。该方法可以应用于终端设备初始接入的场景中。终端设备接入控制方法具体可以包括：
S1501，接入网设备向AMF实体发送PLMN信息。相应的，AMF实体接收PLMN信息，PLMN信息用于指示终端设备选择的第一PLMN。
一种实现方式中，终端设备可以向接入网设备发送PLMN信息，接入网设备向AMF实体发送该PLMN信息。
S1502，AMF实体获取终端设备的位置信息。
在一些实施例中，终端设备的位置信息可以来自于终端设备。
一种可能的实现方式中，终端设备通过RRC建立完成消息向接入网设备上报位置信息，接入网设备在与AMF实体建立终端设备的上下文过程中将终端设备的位置信息上报给AMF实体。
另一种可能的实现方式中，终端设备向接入网设备发送携带位置信息的NAS消息，接入网设备将该NAS消息向AMF实体进行透传。例如，终端设备可以向接入网设备发送上行链路信息转移消息(UL information transfer)，该上行链路信息转移消息包括NAS信令，NAS信令携带终端设备的位置信息，接入网设备接收到上行链路信息转移消息后向AMF实体发送上行链路NAS转移消息，该上行链路NAS转移消息包括该NAS信令。
在另一些实施例中，终端设备的位置信息可以是接入网设备对终端设备进行定位得到的。然后接入网设备在与AMF实体建立终端设备的上下文过程中将终端设备的位置信息上报给AMF实体。
S1503，AMF实体根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。
步骤S1503，与步骤S1003类似，区别在于，执行步骤S1003的设备为接入网设备，而执行步骤S1503的设备为AMF实体，步骤S1503具体可以参阅步骤S1003的相关描述，这里不再重复赘述。
在一些实施例中，AMF实体在确定终端设备不允许接入第一PLMN之后，可以向接入网设备发送上下文释放命令，上下文释放命令用于指示接入网设备释放终端设备。
可选的，上下文释放命令可以携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因为第一PLMN不是终端设备所处国家的PLMN。
相应的，接入网设备接收到AMF实体发送的上下文释放命令之后，根据所述上下文释放命令释放所述终端设备或者将所述终端设备切换到目标小区，所述目标小区的至少一个PLMN标识为所述终端设备允许选择的PLMN标识。
在另一些实施例中，AMF实体在确定终端设备不允许接入第一PLMN之后，可以更新终端设备的移动性限制列表，并向接入网设备发送更新后的移动性限制列表。更新后的移动性限制列表包括如下信息中的至少一项：终端设备允许选择的PLMN标识、终端设备不允许选择的PLMN标识。
相应的，接入网设备在接收到更新后的移动性限制列表后，可以根据所述移动性限制列表将所述终端设备切换到目标小区或者释放所述终端设备，所述目标小区的至少一个PLMN标识为所述终端设备允许选择的PLMN标识。
此外，接入网设备还可以向终端设备发送终端设备允许选择的PLMN标识。
本申请实施例三中，接入网设备释放所述终端设备或者将所述终端设备切换到目标小区的过程，可以参阅上述实施例一中接入网设备释放所述终端设备或者将所述终端设备切换到目标小区的过程，这里不再重复赘述。
本申请实施例三中，终端设备在初始接入时，可以先允许终端设备接入，AMF实体通过判定终端设备的位置信息和选择的PLMN所代表的国家信息是否一致，来对可能异常接入的终端设备进行释放或者小区切换，从而可以在RRC接入阶段阻止终端设备的异常接入。并且，接入网设备还可以告知终端设备可以选择的PLMN，从而可以避免终端设备再选不合适的PLMN，从而有利于提高PLMN选择的速度。
为了更好的理解本申请实施例提供的方法，下面结合处于具体场景对终端设备接入过 程进行详尽描述。终端设备接入过程可以如图16所示：
S1601～S1606，具体可以参阅上述步骤S1401～S1406，重复之处不再赘述。
S1607，终端设备向接入网设备发送上行链路信息转移消息(UL information transfer)。
其中，UL information transfer中可以包括NAS信令，NAS信令携带终端设备的位置信息。
S1608，接入网设备向AMF实体发送上行链路NAS转移消息。
上行链路NAS转移消息中可以包括该NAS信令。
S1609，AMF实体根据终端设备的位置信息以及第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。若否，执行步骤S1610～S1612或者S1613～S1618。
S1610～S1612，具体可以参阅上述步骤S1411～S1413，重复之处不再赘述。
S1613，AMF实体更新终端设备的移动性限制列表，更新后的移动性限制列表包括如下信息中的至少一项：终端设备允许选择的PLMN标识、终端设备不允许选择的PLMN标识。
S1614，AMF实体向接入网设备发送更新后的移动性限制列表。
S1615，接入网设备根据所述更新后的移动性限制列表将所述终端设备切换到目标小区或者释放所述终端设备，所述目标小区的至少一个PLMN标识为所述终端设备允许选择的PLMN标识。
其中，接入网设备根据所述移动性限制列表将所述终端设备切换到目标小区的过程，具体可以参阅上述实施例一中的步骤S1207，重复之处不再赘述。
接入网设备根据所述移动性限制列表释放所述终端设备，具体可以参阅上述实施例一中的步骤S1206，重复之处不再赘述。
可选的，在步骤S1609之后，还可以执行步骤S1616和S1617。
S1616，AMF实体向接入网设备发送下行链路NAS转移消息。
S1617，接入网设备向终端设备发送下行链路信息转移消息。
可选的，AMF实体向接入网设备发送的下行链路NAS转移消息可以包括NAS信令，该NAS信令用于通知终端设备选择的PLMN不是其所在国家的PLMN，该NAS信令还用于通知终端设备允许选择的PLMN ID。接入网设备向终端设备发送的下行链路信息转移消息中可以包括该NAS信令。
终端设备接入过程还可以如图17所示：
S1701～S1704，具体可以参阅上述S1401～S1404，这里不再赘述。
其中，接入网设备向AMF实体发送的初始UE消息中携带终端设备的位置信息。
接入网设备可以通过如下任一种方式得到终端设备的位置信息：
方式一，终端设备通过RRC建立完成消息或者RRC建立请求消息向接入网设备上报位置信息。
方式二，终端设备的位置信息也可以是接入网设备对终端设备进行定位得到的。
方式三，终端设备通过RRC建立完成消息向接入网设备上报位置信息，接入网设备在接收到位置信息后对终端设备进行定位。
S1705，AMF实体根据终端设备的位置信息以及第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。若是，则执行步骤S1706～S1707。若否，执行步骤S1708～S1710或者S1711～S1713。
S1706～S1707，具体可以参阅上述S1405～S1406，这里不再赘述。
S1708～S1710，具体可以参阅上述S1610～S1612，这里不再赘述。
S1711～S1713，具体可以参阅上述S1613～S1615，这里不再赘述。
可选的，在步骤S1705之后，还可以执行步骤S1714和S1715。S1714～S1715，具体可以参阅上述S1616～S1617，这里不再赘述。
基于与方法实施例的同一发明构思，本申请实施例提供一种通信装置，该通信装置的结构可以如图18所示，包括收发单元1801和处理单元1802。
在一种具体的实施方式中，通信装置具体可以用于实现图如9～图12的实施例中接入网设备执行的方法，该装置可以是接入网设备本身，也可以是接入网设备中的芯片或芯片组或芯片中用于执行相关方法功能的一部分。其中，收发单元1801，用于接收PLMN信息，PLMN信息用于指示终端设备选择的第一PLMN。处理单元1802，用于获取终端设备的位置信息，并根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。
可选的，处理单元1802，在获取终端设备的位置信息时，具体可以用于：对终端设备进行定位，得到位置信息。
或者，处理单元1802，在获取终端设备的位置信息时，还具体可以用于：通过收发单元1801接收终端设备发送的位置信息。
或者，处理单元1802，在获取终端设备的位置信息时，还具体可以用于：通过收发单元1801接收终端设备发送的位置信息，然后对终端设备进行定位。
示例性的，处理单元1802，在根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN时，具体可以用于：当位置信息对应的国家信息与第一PLMN对应的国家信息不一致时，确定终端设备不允许接入第一PLMN。或者，当位置信息对应的国家信息与第一PLMN对应的国家信息一致时，确定终端设备允许接入第一PLMN。
在一种可能的实施方式中，收发单元1801，还用于：在处理单元1802确定终端设备不允许接入第一PLMN之后，向终端设备发送RRC释放消息，RRC释放消息用于释放终端设备的RRC连接。
示例性的，RRC释放消息携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因为第一PLMN不是终端设备所处国家的PLMN。
在一种可能的实施方式中，处理单元1802，还用于：在处理单元1802确定终端设备不允许接入第一PLMN之后，根据终端设备的位置信息将终端设备切换到目标小区，目标小区的至少一个PLMN标识对应的国家与终端设备的位置信息对应的国家相同。
可选的，收发单元1801，还用于：向目标小区对应的接入网设备或者目标小区对应的接入网设备所连接的AMF实体发送切换原因，切换原因为第一PLMN不是终端设备所处国家的PLMN。
在一种具体的实施方式中，通信装置具体可以用于实现图如13～图14的实施例中接入网设备执行的方法，该装置可以是接入网设备本身，也可以是接入网设备中的芯片或芯片组或芯片中用于执行相关方法功能的一部分。其中，收发单元1801，用于接收PLMN信息，PLMN信息用于指示终端设备选择的第一PLMN。处理单元1802，用于获取终端设备的位置信息，并根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。
可选的，处理单元1802，在获取终端设备的位置信息时，具体可以用于：对终端设备进行定位，得到位置信息。
或者，处理单元1802，在获取终端设备的位置信息时，还具体可以用于：通过收发单元1801接收终端设备发送的位置信息。
或者，处理单元1802，在获取终端设备的位置信息时，还具体可以用于：通过收发单元1801接收终端设备发送的位置信息，然后对终端设备进行定位。
示例性的，处理单元1802，在根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN时，具体可以用于：当位置信息对应的国家信息与第一PLMN对应的国家信息不一致时，确定终端设备不允许接入第一PLMN。或者，当位置信息对应的国家信息与第一PLMN对应的国家信息一致时，确定终端设备允许接入第一PLMN。
在一种可能的实施方式中，收发单元1801，还用于：在处理单元1802确定终端设备不允许接入第一PLMN之后，向AMF实体发送RRC释放请求消息，RRC释放请求消息用于请求AMF实体释放终端设备。
示例性的，RRC释放请求消息携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因第一PLMN不是终端设备所处国家的PLMN。
可选的，收发单元1801，还用于：在向AMF实体发送RRC释放请求消息之后，接收AMF实体发送的上下文释放命令，上下文释放命令用于指示网络设备释放终端设备的RRC连接，且上下文释放命令携带释放原因，释放原因为第一PLMN不是终端设备所处国家的PLMN；以及，向终端设备发送RRC释放消息，释放信息携带终端设备允许选择的PLMN标识。
可选的，处理单元1802，还用于：在收发单元1801接收到上下文释放命令后，根据终端设备的位置信息将终端设备切换到目标小区，目标小区的至少一个PLMN标识对应的国家与终端设备的位置信息对应的国家相同。
可选的，收发单元1801，还用于：向目标小区对应的接入网设备或者目标小区对应的接入网设备所连接的AMF实体发送切换原因，切换原因为第一PLMN不是终端设备所处国家的PLMN。
在一种具体的实施方式中，通信装置具体可以用于实现图如15～图17的实施例中AMF实体执行的方法，该装置可以是AMF实体本身，也可以是AMF实体中的芯片或芯片组或芯片中用于执行相关方法功能的一部分。其中，收发单元1801，用于接收PLMN信息，PLMN信息用于指示终端设备选择的第一PLMN。处理单元1802，用于获取终端设备的位置信息，并根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN。
可选的，处理单元1802，在获取终端设备的位置信息时，具体可以用于：通过收发单元1801接收接入网设备发送的位置信息，位置信息为终端设备向接入网设备发送的，或者，位置信息为接入网设备对终端设备定位得到的。
示例性的，处理单元1802，在根据位置信息与第一PLMN对应的国家信息确定是否允许终端设备接入第一PLMN时，具体可以用于：当位置信息对应的国家信息与第一PLMN对应的国家信息不一致时，确定终端设备不允许接入第一PLMN。或者，当位置信息对应的国家信息与第一PLMN对应的国家信息一致时，确定终端设备允许接入第一PLMN。
在一种可能的实施方式中，收发单元1801，还用于：在处理单元1802确定终端设备 不允许接入第一PLMN之后，向接入网设备发送上下文释放命令，上下文释放命令用于指示接入网设备释放终端设备。
示例性的，上下文释放命令携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因为第一PLMN不是终端设备所处国家的PLMN。
在一种可能的实施方式中，处理单元1802，还用于：在确定终端设备不允许接入第一PLMN之后，更新终端设备的移动性限制列表。收发单元1801，还用于：向接入网设备发送更新后的移动性限制列表，更新后的移动性限制列表包括如下信息中的至少一项：终端设备允许选择的PLMN标识、终端设备不允许选择的PLMN标识。
在一种具体的实施方式中，通信装置具体可以用于实现图如15～图17的实施例中接入网设备执行的方法，该装置可以是接入网设备本身，也可以是接入网设备中的芯片或芯片组或芯片中用于执行相关方法功能的一部分。其中，收发单元，用于接收AMF实体发送的上下文释放命令，上下文释放命令用于指示接入网设备释放终端设备，上下文释放命令携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因为终端设备选择的第一PLMN不是终端设备所处国家的PLMN。处理单元1802，用于根据上下文释放命令将终端设备切换到目标小区，目标小区的至少一个PLMN标识为终端设备允许选择的PLMN标识。
可选的，收发单元1801，还用于：向目标小区对应的接入网设备或者AMF实体发送切换原因，切换原因为第一PLMN不是终端设备所处国家的PLMN。
在一种具体的实施方式中，通信装置具体可以用于实现图如15～图17的实施例中接入网设备执行的方法，该装置可以是接入网设备本身，也可以是接入网设备中的芯片或芯片组或芯片中用于执行相关方法功能的一部分。其中，收发单元1801，用于接收AMF发送的移动性限制列表，移动性限制列表包括如下信息中的至少一项：终端设备允许选择的PLMN标识、终端设备不允许选择的PLMN标识。处理单元1802，用于根据移动性限制列表将终端设备切换到目标小区或者释放终端设备，目标小区的至少一个PLMN标识为终端设备允许选择的PLMN标识。
可选的，处理单元1802，在根据移动性限制列表将终端设备切换到目标小区时，具体用于：根据移动性限制列表通过收发单元1801向目标小区对应的接入网设备或者AMF实体发送切换请求，切换请求用于请求将终端设备切换到目标小区。
示例性的，切换请求携带切换原因，切换原因为终端设备选择的PLMN不是终端设备所处国家的PLMN。
可选的，处理单元1802，在根据移动性限制列表释放终端设备时，可以具体用于：根据移动性限制列表通过收发单元1801向终端设备发送无线资源控制RRC释放消息，RRC释放消息用于释放终端设备的RRC连接。
示例性的，RRC释放消息携带如下信息中至少一项：释放原因、终端设备允许选择的PLMN标识，释放原因为终端设备选择的PLMN不是终端设备所处国家的PLMN。
在一种具体的实施方式中，通信装置具体可以用于实现图如10～图17的实施例中终端设备执行的方法，该装置可以是终端设备本身，也可以是终端设备中的芯片或芯片组或芯片中用于执行相关方法功能的一部分。其中，收发单元1801，用于与接入网设备进行通信；处理单元1802，用于通过收发单元1801向接入网设备发送PLMN信息，PLMN信息用于指示终端设备选择的PLMN；以及，通过收发单元1801接收接入网设备发送的无线资源 控制RRC释放消息，RRC释放消息用于释放终端设备的RRC连接，且RRC释放消息携带如下信息中至少一项信息：释放原因、终端设备允许选择的PLMN标识，释放原因为终端设备选择的PLMN不是终端设备所处国家的PLMN。
可选的，处理单元1802，还用于：在通过收发单元1801接收接入网设备发送的无线资源控制RRC释放消息之后，根据终端设备允许选择的PLMN标识重新选择PLMN。
本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，另外，在本申请各个实施例中的各功能模块可以集成在一个处理器中，也可以是单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。可以理解的是，本申请实施例中各个模块的功能或者实现可以进一步参考方法实施例的相关描述。
一种可能的方式中，通信装置可以如图19所示，该通信装置可以是通信设备或者通信设备中的芯片，其中，通信设备可以为终端设备，也可以为网络设备。该装置可以包括处理器1901，通信接口1902，存储器1903。其中，处理单元1802可以为处理器1901。收发单元1801可以为通信接口1902。
处理器1901，可以是一个中央处理模块(central processing unit，CPU)，或者为数字处理模块等等。通信接口1902可以是收发器、也可以为接口电路如收发电路等、也可以为收发芯片等等。该装置还包括：存储器1903，用于存储处理器1901执行的程序。存储器1903可以是非易失性存储器，比如硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)。存储器1903是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。
处理器1901用于执行存储器1903存储的程序代码，具体用于执行上述处理单元1802的动作，本申请在此不再赘述。通信接口1902具体用于执行上述收发单元1801的动作，本申请在此不再赘述。
本申请实施例中不限定上述通信接口1902、处理器1901以及存储器1903之间的具体连接介质。本申请实施例在图19中以存储器1903、处理器1901以及通信接口1902之间通过总线1904连接，总线在图19中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图19中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
图20是本申请实施例提供的一种接入网设备的结构示意图，如可以为基站的结构示意图。如图20所示，该基站可执行上述图10～图17所述方法实施例中接入网设备的功能。基站200可包括一个或多个分布单元(distributed unit，DU)2001和一个或多个集中单元(centralized unit，CU)2002。所述DU 2001可以包括至少一个天线20011，至少一个射频单元20015，至少一个处理器20020和至少一个存储器20014。所述DU 2001部分主要用于射频信号的收发以及射频信号与基带信号的转换，以及部分基带处理。CU2002可以包括至少一个处理器20022和至少一个存储器20021。CU2002和DU2001之间可以通过接口进行通信，其中，控制面(Control plan)接口可以为Fs-C，比如F1-C，用户面(User Plan)接口可以为Fs-U，比如F1-U。
所述CU 2002部分主要用于进行基带处理，对基站进行控制等。所述DU 2001与CU2002可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。所述CU 2002 为基站的控制中心，也可以称为处理单元，主要用于完成基带处理功能。例如所述CU 2002可以用于接入网设备执行上述图10～图12所述方法实施例中关于接入网设备与终端设备通信的操作流程，或者，所述CU 2002可以用于接入网设备执行上述图13～图14所述方法实施例中关于接入网设备与AMF实体通信的操作流程，或者，所述CU 2002可以用于接入网设备执行上述图15～图17所述方法实施例中关于接入网设备与AMF实体通信的操作流程。
具体的，CU和DU上的基带处理可以根据无线网络的协议层划分，例如PDCP层及以上协议层的功能设置在CU，PDCP以下的协议层，例如RLC层和MAC层等的功能设置在DU。又例如，CU实现RRC，PDCP层的功能，DU实现RLC、MAC和物理(physical，PHY)层的功能。
此外，可选的，基站200可以包括一个或多个射频单元(RU)，一个或多个DU和一个或多个CU。其中，DU可以包括至少一个处理器20020和至少一个存储器20014，RU可以包括至少一个天线20011和至少一个射频单元20015，CU可以包括至少一个处理器20022和至少一个存储器20021。
在一个实例中，所述CU2002可以由一个或多个单板构成，多个单板可以共同支持单一接入指示的无线接入网(如5G网)，也可以分别支持不同接入制式的无线接入网(如LTE网，5G网或其他网)。所述存储器20021和处理器20022可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。所述DU2001可以由一个或多个单板构成，多个单板可以共同支持单一接入指示的无线接入网(如5G网)，也可以分别支持不同接入制式的无线接入网(如LTE网，5G网或其他网)。所述存储器20014和处理器20020可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
图21是本申请实施例提供的一种终端设备的结构示意图。该终端设备可适用于图4～图9所示出的系统中，执行上述图10～图17所述方法实施例中终端设备的功能。为了便于说明，图21仅示出了终端设备的主要部件。如图21所示，终端设备210包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端设备进行控制，执行软件程序，处理软件程序的数据，例如用于支持终端设备执行上述图10～图17所述方法实施例中所描述的动作。存储器主要用于存储软件程序和数据。控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。控制电路和天线一起也可以叫做收发器，主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端设备开机后，处理器可以读取存储器的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解，为了便于说明，图21仅示出了一个存储器和一个处理器。在实际的终端设备中，可以存在多个处理器和多个存储器。存储器也可以称为存储介质或 者存储设备等。存储器可以为与处理器处于同一芯片上的存储元件，即片内存储元件，或者为独立的存储元件，本申请实施例对此不做限定。
作为一种可选的实现方式，所述终端设备可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备进行控制，执行软件程序，处理软件程序的数据。图21中的处理器可以集成基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储器中，由处理器执行软件程序以实现基带处理功能。
在本申请实施例中，可以将具有收发功能的天线和控制电路视为终端设备210的收发单元2101，例如，用于支持终端设备执行接收功能和发送功能。将具有处理功能的处理器2102视为终端设备210的处理单元2102。如图21所示，终端设备210包括收发单元2101和处理单元2102。收发单元也可以称为收发器、收发机、收发装置等。可选的，可以将收发单元2101中用于实现接收功能的器件视为接收单元，将收发单元2101中用于实现发送功能的器件视为发送单元，即收发单元2101包括接收单元和发送单元，接收单元也可以称为接收机、输入口、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
处理器2102可用于执行该存储器存储的指令，以控制收发单元2101接收信号和/或发送信号，完成上述方法实施例中终端设备的功能。所述处理器2102还包括接口，用以实现信号的输入/输出功能。作为一种实现方式，收发单元2101的功能可以考虑通过收发电路或者收发的专用芯片实现。
本发明实施例还提供了一种计算机可读存储介质，用于存储为执行上述处理器所需执行的计算机软件指令，其包含用于执行上述处理器所需执行的程序。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (49)

  1. 一种终端设备接入控制方法，其特征在于，包括：
    网络设备接收公共陆地移动网络PLMN信息，所述PLMN信息用于指示终端设备选择的第一PLMN，所述网络设备为接入网设备或者接入和移动性管理功能AMF实体；
    所述网络设备获取所述终端设备的位置信息；
    所述网络设备根据所述位置信息与所述第一PLMN对应的国家信息确定是否允许所述终端设备接入所述第一PLMN。
  2. 如权利要求1所述的方法，其特征在于，所述网络设备为接入网设备，所述网络设备获取所述终端设备的位置信息，包括：
    所述网络设备对所述终端设备进行定位，得到所述位置信息；
    或者，所述网络设备接收所述终端设备发送的所述位置信息。
  3. 如权利要求1所述的方法，其特征在于，所述网络设备为AMF实体，所述网络设备获取所述终端设备的位置信息，包括：
    所述网络设备接收接入网设备发送的所述位置信息，所述位置信息为所述终端设备向所述接入网设备发送的，或者，所述位置信息为所述接入网设备对所述终端设备定位得到的。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述网络设备根据所述位置信息与所述第一PLMN对应的国家信息确定是否允许所述终端设备接入所述第一PLMN，包括：
    当所述位置信息对应的国家信息与所述第一PLMN对应的国家信息不一致时，所述网络设备确定所述终端设备不允许接入所述第一PLMN；
    或者，当所述位置信息对应的国家信息与所述第一PLMN对应的国家信息一致时，所述网络设备确定所述终端设备允许接入所述第一PLMN。
  5. 如权利要求4所述的方法，其特征在于，所述网络设备为接入网设备，在所述网络设备确定所述终端设备不允许接入所述第一PLMN之后，所述方法还包括：
    所述网络设备向所述终端设备发送无线资源控制RRC释放消息，所述RRC释放消息用于释放所述终端设备的RRC连接。
  6. 如权利要求5所述的方法，其特征在于，所述RRC释放消息携带如下信息中至少一项信息：释放原因、所述终端设备允许选择的PLMN标识，所述释放原因为所述第一PLMN不是所述终端设备所处国家的PLMN。
  7. 如权利要求4所述的方法，其特征在于，所述网络设备为接入网设备，在所述网络设备确定所述终端设备不允许接入所述第一PLMN之后，所述方法还包括：
    所述网络设备向AMF实体发送RRC释放请求消息，所述RRC释放请求消息用于请求所述AMF实体释放所述终端设备。
  8. 如权利要求7所述的方法，其特征在于，所述RRC释放请求消息携带如下信息中至少一项信息：释放原因、所述终端设备允许选择的PLMN标识，所述释放原因所述第一PLMN不是所述终端设备所处国家的PLMN。
  9. 如权利要求7或8所述的方法，其特征在于，在所述网络设备向AMF实体发送RRC释放请求消息之后，所述方法还包括：
    所述网络设备接收所述AMF实体发送的上下文释放命令，所述上下文释放命令用于 指示所述网络设备释放所述终端设备的RRC连接，且所述上下文释放命令携带释放原因，所述释放原因为所述第一PLMN不是所述终端设备所处国家的PLMN；
    所述网络设备向所述终端设备发送RRC释放消息，所述释放信息携带所述终端设备允许选择的PLMN标识。
  10. 如权利要求4所述的方法，其特征在于，所述网络设备为接入网设备，在所述网络设备确定所述终端设备不允许接入所述第一PLMN之后，所述方法还包括：
    所述接入网设备根据所述终端设备的位置信息将所述终端设备切换到目标小区，所述目标小区的至少一个PLMN标识对应的国家与所述终端设备的位置信息对应的国家相同。
  11. 如权利要求10所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述目标小区对应的接入网设备或者所述目标小区对应的接入网设备所连接的AMF实体发送切换原因，所述切换原因为所述第一PLMN不是所述终端设备所处国家的PLMN。
  12. 如权利要求4所述的方法，其特征在于，所述网络设备为AMF实体，在所述网络设备确定所述终端设备不允许接入所述第一PLMN之后，所述方法还包括：
    所述网络设备向接入网设备发送上下文释放命令，所述上下文释放命令用于指示所述接入网设备释放所述终端设备。
  13. 如权利要求12所述的方法，其特征在于，所述上下文释放命令携带如下信息中至少一项信息：释放原因、所述终端设备允许选择的PLMN标识，所述释放原因为所述第一PLMN不是所述终端设备所处国家的PLMN。
  14. 如权利要求4所述的方法，其特征在于，所述网络设备为AMF实体，在所述网络设备确定所述终端设备不允许接入所述第一PLMN之后，所述方法包括：
    所述网络设备更新所述终端设备的移动性限制列表，更新后的移动性限制列表包括如下信息中的至少一项：所述终端设备允许选择的PLMN标识、所述终端设备不允许选择的PLMN标识；
    所述网络设备向接入网设备发送所述更新后的移动性限制列表。
  15. 一种终端设备接入控制方法，其特征在于，包括：
    接入网设备接收接入和移动性管理功能AMF实体发送的上下文释放命令，所述上下文释放命令用于指示所述接入网设备释放终端设备，所述上下文释放命令携带如下信息中至少一项信息：释放原因、所述终端设备允许选择的PLMN标识，所述释放原因为所述终端设备选择的第一PLMN不是所述终端设备所处国家的PLMN；
    接入网设备根据所述上下文释放命令将所述终端设备切换到目标小区，所述目标小区的至少一个PLMN标识为所述终端设备允许选择的PLMN标识。
  16. 如权利要求15所述的方法，其特征在于，所述方法还包括：
    所述接入网设备向所述目标小区对应的接入网设备或者所述AMF实体发送切换原因，所述切换原因为所述第一PLMN不是所述终端设备所处国家的PLMN。
  17. 一种终端设备接入控制方法，其特征在于，包括：
    接入网设备接收接入和移动性管理功能AMF发送的移动性限制列表，所述移动性限制列表包括如下信息中的至少一项：终端设备允许选择的公共陆地移动网络PLMN标识、所述终端设备不允许选择的PLMN标识；
    所述接入网设备根据所述移动性限制列表将所述终端设备切换到目标小区或者释放 所述终端设备，所述目标小区的至少一个PLMN标识为所述终端设备允许选择的PLMN标识。
  18. 如权利要求17所述的方法，其特征在于，所述接入网设备根据所述移动性限制列表将所述终端设备切换到目标小区，包括：
    所述接入网设备根据所述移动性限制列表向所述目标小区对应的接入网设备或者所述AMF实体发送切换请求，所述切换请求用于请求将所述终端设备切换到所述目标小区。
  19. 如权利要求18所述的方法，其特征在于，所述切换请求携带切换原因，所述切换原因为所述终端设备选择的PLMN不是所述终端设备所处国家的PLMN。
  20. 如权利要求17所述的方法，其特征在于，所述接入网设备根据所述移动性限制列表释放所述终端设备，包括：
    所述接入网设备根据所述移动性限制列表向所述终端设备发送无线资源控制RRC释放消息，所述RRC释放消息用于释放所述终端设备的RRC连接。
  21. 如权利要求20所述的方法，其特征在于，所述RRC释放消息携带如下信息中至少一项：释放原因、所述终端设备允许选择的PLMN标识，所述释放原因为所述终端设备选择的PLMN不是所述终端设备所处国家的PLMN。
  22. 一种终端设备接入控制方法，其特征在于，包括：
    终端设备向接入网设备发送公共陆地移动网络PLMN信息，所述PLMN信息用于指示所述终端设备选择的PLMN；
    所述终端设备接收所述接入网设备发送的无线资源控制RRC释放消息，所述RRC释放消息用于释放所述终端设备的RRC连接，且所述RRC释放消息携带如下信息中至少一项信息：释放原因、所述终端设备允许选择的PLMN标识，所述释放原因为所述终端设备选择的PLMN不是所述终端设备所处国家的PLMN。
  23. 如权利要求22所述的方法，其特征在于，在所述终端设备接收所述接入网设备发送的无线资源控制RRC释放消息之后，所述方法还包括：
    所述终端设备根据所述终端设备允许选择的PLMN标识重新选择PLMN。
  24. 一种终端设备接入控制装置，其特征在于，所述装置应用于接入网设备或者接入和移动性管理功能AMF实体，所述装置包括：
    收发单元，用于接收公共陆地移动网络PLMN信息，所述PLMN信息用于指示终端设备选择的第一PLMN；
    处理单元，用于获取所述终端设备的位置信息；以及，根据所述位置信息与所述第一PLMN对应的国家信息确定是否允许所述终端设备接入所述第一PLMN。
  25. 如权利要求24所述的装置，其特征在于，所述装置应用于接入网设备，所述处理单元，在获取所述终端设备的位置信息时，具体用于：
    对所述终端设备进行定位，得到所述位置信息；
    或者，通过所述收发单元接收所述终端设备发送的所述位置信息。
  26. 如权利要求24所述的装置，其特征在于，所述装置应用于AMF实体，所述处理单元，在获取所述终端设备的位置信息时，具体用于：
    通过所述收发单元接收接入网设备发送的所述位置信息，所述位置信息为所述终端设备向所述接入网设备发送的，或者，所述位置信息为所述接入网设备对所述终端设备定位得到的。
  27. 如权利要求24-26任一项所述的装置，其特征在于，所述处理单元，在根据所述位置信息与所述第一PLMN对应的国家信息确定是否允许所述终端设备接入所述第一PLMN时，具体用于：
    当所述位置信息对应的国家信息与所述第一PLMN对应的国家信息不一致时，确定所述终端设备不允许接入所述第一PLMN；
    或者，当所述位置信息对应的国家信息与所述第一PLMN对应的国家信息一致时，确定所述终端设备允许接入所述第一PLMN。
  28. 如权利要求27所述的装置，其特征在于，所述装置应用于接入网设备，所述收发单，还用于：
    在所述处理单元确定所述终端设备不允许接入所述第一PLMN之后，向所述终端设备发送无线资源控制RRC释放消息，所述RRC释放消息用于释放所述终端设备的RRC连接。
  29. 如权利要求28所述的装置，其特征在于，所述RRC释放消息携带如下信息中至少一项信息：释放原因、所述终端设备允许选择的PLMN标识，所述释放原因为所述第一PLMN不是所述终端设备所处国家的PLMN。
  30. 如权利要求27所述的装置，其特征在于，所述装置应用于接入网设备，所述收发单元，还用于：
    在所述处理单元确定所述终端设备不允许接入所述第一PLMN之后，向AMF实体发送RRC释放请求消息，所述RRC释放请求消息用于请求所述AMF实体释放所述终端设备。
  31. 如权利要求30所述的装置，其特征在于，所述RRC释放请求消息携带如下信息中至少一项信息：释放原因、所述终端设备允许选择的PLMN标识，所述释放原因所述第一PLMN不是所述终端设备所处国家的PLMN。
  32. 如权利要求30或31所述的装置，其特征在于，所述收发单元，还用于：
    在向AMF实体发送RRC释放请求消息之后，接收所述AMF实体发送的上下文释放命令，所述上下文释放命令用于指示所述网络设备释放所述终端设备的RRC连接，且所述上下文释放命令携带释放原因，所述释放原因为所述第一PLMN不是所述终端设备所处国家的PLMN；
    向所述终端设备发送RRC释放消息，所述释放信息携带所述终端设备允许选择的PLMN标识。
  33. 如权利要求27所述的装置，其特征在于，所述装置应用于接入网设备，所述处理单元，还用于：
    在确定所述终端设备不允许接入所述第一PLMN之后，根据所述终端设备的位置信息将所述终端设备切换到目标小区，所述目标小区的至少一个PLMN标识对应的国家与所述终端设备的位置信息对应的国家相同。
  34. 如权利要求33所述的装置，其特征在于，所述收发单元，还用于：
    向所述目标小区对应的接入网设备或者所述目标小区对应的接入网设备所连接的AMF实体发送切换原因，所述切换原因为所述第一PLMN不是所述终端设备所处国家的PLMN。
  35. 如权利要求27所述的装置，其特征在于，所述装置应用于AMF实体，所述收发 单元，还用于：
    在所述处理单元确定所述终端设备不允许接入所述第一PLMN之后，向接入网设备发送上下文释放命令，所述上下文释放命令用于指示所述接入网设备释放所述终端设备。
  36. 如权利要求35所述的装置，其特征在于，所述上下文释放命令携带如下信息中至少一项信息：释放原因、所述终端设备允许选择的PLMN标识，所述释放原因为所述第一PLMN不是所述终端设备所处国家的PLMN。
  37. 如权利要求27所述的装置，其特征在于，所述装置应用于AMF实体，所述处理单元，还用于：
    在确定所述终端设备不允许接入所述第一PLMN之后，更新所述终端设备的移动性限制列表，更新后的移动性限制列表包括如下信息中的至少一项：所述终端设备允许选择的PLMN标识、所述终端设备不允许选择的PLMN标识；
    所述收发单元，还用于：
    向接入网设备发送所述更新后的移动性限制列表。
  38. 一种终端设备接入控制装置，其特征在于，包括：
    收发单元，用于接收接入和移动性管理功能AMF实体发送的上下文释放命令，所述上下文释放命令用于指示所述接入网设备释放终端设备，所述上下文释放命令携带如下信息中至少一项信息：释放原因、所述终端设备允许选择的公共陆地移动网络PLMN标识，所述释放原因为所述终端设备选择的第一PLMN不是所述终端设备所处国家的PLMN；
    处理单元，用于根据所述上下文释放命令将所述终端设备切换到目标小区，所述目标小区的至少一个PLMN标识为所述终端设备允许选择的PLMN标识。
  39. 如权利要求38所述的装置，其特征在于，所述收发单元，还用于：
    向所述目标小区对应的接入网设备或者所述AMF实体发送切换原因，所述切换原因为所述第一PLMN不是所述终端设备所处国家的PLMN。
  40. 一种终端设备接入控制装置，其特征在于，包括：
    收发单元，用于接收接入和移动性管理功能AMF发送的移动性限制列表，所述移动性限制列表包括如下信息中的至少一项：终端设备允许选择的公共陆地移动网络PLMN标识、所述终端设备不允许选择的PLMN标识；
    处理单元，用于根据所述移动性限制列表将所述终端设备切换到目标小区或者释放所述终端设备，所述目标小区的至少一个PLMN标识为所述终端设备允许选择的PLMN标识。
  41. 如权利要求40所述的装置，其特征在于，所述处理单元，在根据所述移动性限制列表将所述终端设备切换到目标小区时，具体用于：
    根据所述移动性限制列表通过所述收发单元向所述目标小区对应的接入网设备或者所述AMF实体发送切换请求，所述切换请求用于请求将所述终端设备切换到所述目标小区。
  42. 如权利要求41所述的装置，其特征在于，所述切换请求携带切换原因，所述切换原因为所述终端设备选择的PLMN不是所述终端设备所处国家的PLMN。
  43. 如权利要求40所述的装置，其特征在于，所述处理单元，在根据所述移动性限制列表释放所述终端设备时，具体用于：
    根据所述移动性限制列表通过所述收发单元向所述终端设备发送无线资源控制RRC 释放消息，所述RRC释放消息用于释放所述终端设备的RRC连接。
  44. 如权利要求43所述的装置，其特征在于，所述RRC释放消息携带如下信息中至少一项：释放原因、所述终端设备允许选择的PLMN标识，所述释放原因为所述终端设备选择的PLMN不是所述终端设备所处国家的PLMN。
  45. 一种终端设备接入控制装置，其特征在于，包括：
    收发单元，用于与接入网设备进行通信；
    处理单元，用于通过所述收发单元向接入网设备发送公共陆地移动网络PLMN信息，所述PLMN信息用于指示所述终端设备选择的PLMN；以及，通过所述收发单元接收所述接入网设备发送的无线资源控制RRC释放消息，所述RRC释放消息用于释放所述终端设备的RRC连接，且所述RRC释放消息携带如下信息中至少一项信息：释放原因、所述终端设备允许选择的PLMN标识，所述释放原因为所述终端设备选择的PLMN不是所述终端设备所处国家的PLMN。
  46. 如权利要求45所述的装置，其特征在于，所述处理单元，还用于：
    在通过所述收发单元接收所述接入网设备发送的无线资源控制RRC释放消息之后，根据所述终端设备允许选择的PLMN标识重新选择PLMN。
  47. 一种通信设备，其特征在于，所述通信设备包括收发器、处理器和存储器；所述存储器中存储有程序指令；当所述程序指令被执行时，使得所述通信设备执行如权利要求1至14任一所述的方法，或者，使得所述通信设备执行如权利要求15至16任一所述的方法，或者，使得所述通信设备执行如权利要求17至21任一所述的方法，或者，使得所述通信设备执行如权利要求22至23任一所述的方法。
  48. 一种芯片，其特征在于，所述芯片与电子设备中的存储器耦合，使得所述芯片在运行时调用所述存储器中存储的程序指令，实现如权利要求1至14任一所述的方法，或者，实现如权利要求15至16任一所述的方法，或者，实现如权利要求17至21任一所述的方法，或者，实现如权利要求22至23任一所述的方法。
  49. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质包括程序指令，当所述程序指令在设备上运行时，使得所述设备执行如权利要求1至14任一所述的方法，或者，实现如权利要求15至16任一所述的方法，或者，实现如权利要求17至21任一所述的方法，或者，实现如权利要求22至23任一所述的方法。
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