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CN-122028144-A - Communication method and communication device

CN122028144ACN 122028144 ACN122028144 ACN 122028144ACN-122028144-A

Abstract

The application provides a communication method and a communication device, which can provide a method for accessing a terminal device to a network and can be applied to a communication system. The method comprises the steps that the terminal device receives an attachment acceptance message in a non-storage forwarding mode, the terminal device receives storage forwarding indication information from a non-ground network device, the terminal device sends an attachment request message and a user permanent identification to a first mobile management network element, or the terminal device sends a first tracking area update request message and the user permanent identification to the first mobile management network element.

Inventors

  • HUANG LI
  • WU YIZHUANG
  • LI YONGCUI
  • GUO YANFEI
  • DENG TAOYU

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260512
Application Date
20241108

Claims (20)

  1. 1. A communication method, applied to a terminal device, the method comprising: receiving an attach accept message in a non-store-and-forward mode; Receiving storage forwarding indication information from a non-terrestrial network device; The method comprises the steps of sending an attach request message and a user permanent identification to a first mobile management network element, or sending a first tracking area update request message and the user permanent identification to the first mobile management network element.
  2. 2. The method according to claim 1, wherein the method further comprises: And determining to switch from a non-store-and-forward mode to a store-and-forward mode according to the store-and-forward indication information.
  3. 3. The method of claim 2, wherein said determining to switch from a non-store-and-forward mode to a store-and-forward mode based on said store-and-forward indication information comprises: Determining to switch from the non-store-and-forward mode to the store-and-forward mode according to the context in the terminal device and the store-and-forward instruction information.
  4. 4. The method of claim 3, wherein the context in the terminal device comprises at least one of a first timer, a location of the terminal device, a tracking area list, information of a non-terrestrial network, or a store-and-forward capability of the terminal device.
  5. 5. The method according to claim 3 or 4, wherein determining to switch from the non-store-and-forward mode to the store-and-forward mode based on the context in the terminal device and the store-and-forward indication information comprises at least one of: Determining to switch from the non-store-and-forward mode to the store-and-forward mode in the event that the store-and-forward indication information is received and the terminal device supports communication in a store-and-forward mode, or Determining to switch from said non-store-and-forward mode to said store-and-forward mode in case said store-and-forward indication information is received and the terminal device is located within the coverage area of the store-and-forward mode network, or And under the condition that the storage forwarding indication information is received and the first mobility management network element cannot acquire the context, determining to switch from the non-storage forwarding mode to the storage forwarding mode.
  6. 6. The method of any of claims 2-5, wherein the non-store-and-forward mode and the store-and-forward mode are for a non-terrestrial network.
  7. 7. The method according to any of claims 2-6, wherein said sending an attach request message to said first mobility management network element comprises: And transmitting the attach request message to the first mobility management network element in response to the terminal device transitioning from a non-store-and-forward mode to a store-and-forward mode.
  8. 8. The method according to any of claims 1-7, wherein the attach request message and the user permanent identity are located in the same message or in different messages.
  9. 9. The method according to claim 8, wherein in case the attach request message and the permanent identity of the user are located in the same message, the attach request message further comprises an identity of a second mobility management network element, which second mobility management network element is operating in a non-store-and-forward mode.
  10. 10. The method according to any of claims 1-9, wherein before said sending an attach request message to the first mobility management network element, the method further comprises: Sending a second tracking area update request message to the first mobility management network element; a second tracking area update reject message is received from the first mobility management network element.
  11. 11. The method according to any of claims 2-6, wherein said sending a first tracking area update request message to said first mobility management network element and sending said user permanent identity comprises: In response to the terminal device transitioning from the non-store-and-forward mode to the store-and-forward mode, sending the first tracking area update request message to the first mobility management network element and sending the user permanent identification.
  12. 12. The method according to any of claims 2-6 or 11, wherein the first tracking area update request message and the user permanent identity are located in the same message or in different messages.
  13. 13. The method of claim 12, wherein in the case where the first tracking area update request message and the subscriber permanent identification are located in the same message, the first tracking area update request message further includes an identification of a second mobility management network element, the second mobility management network element operating in a non-store-and-forward mode.
  14. 14. The method according to any of claims 2-6 or any of claims 11-13, wherein the sending a first tracking area update request message to a first mobility management network element comprises: And sending the first tracking area updating request message when the terminal device enters the tracking area corresponding to the store-and-forward mode from the tracking area corresponding to the non-store-and-forward mode.
  15. 15. The method according to any of claims 1-6 or any of claims 11-14, wherein the sending a first tracking area update request message to a first mobility management network element comprises sending the first tracking area update request message to the first mobility management network element if a second timer is determined to time out, the second timer being used to indicate a period of tracking area update.
  16. 16. The method according to any of claims 1-6 or any of claims 11-15, wherein the sending the user permanent identification comprises: The method comprises the steps of receiving a first message, wherein the first message is used for requesting the permanent identification of the user; and sending a second message, wherein the second message is used for indicating the permanent identification of the user.
  17. 17. The method according to any of claims 1-16, wherein the user permanent identity is an international mobile subscriber identity or a user hidden identity.
  18. 18. A communication method applied to a first mobility management element, the method comprising: Receiving a first tracking area update request message from a terminal device, wherein the first tracking area update request message comprises a user permanent identification; A third message is sent to the second mobility management network element, the third message being used to obtain the context of the terminal device, the third message comprising the permanent identity of the user, or, And sending a fourth message to the data management network element, wherein the fourth message is used for acquiring the subscription information of the terminal device, and the fourth message comprises the permanent identification of the user.
  19. 19. The method of claim 18, wherein the sending the fourth message to the data management network element comprises: and sending the fourth message to the data management network element under the condition that the first mobile management network element does not acquire the context of the terminal device.
  20. 20. The method of claim 18, wherein the step of providing the first information comprises, The first mobility management element is located in a non-terrestrial network device, or The first mobility management element is located in a ground network device, or The first mobility management network element comprises an on-board mobility management network element and a ground mobility management network element, wherein the on-board mobility management network element is located in a non-ground network device, and the ground mobility management network element is located in a ground network device.

Description

Communication method and communication device Technical Field The present application relates to the field of communications technologies, and in particular, to a communication method and a communication device. Background The terminal device communicates with the wireless network and needs to access the wireless network. In the existing technology, the terminal device can update the tracking area of the terminal device by initiating a tracking area update procedure, thereby maintaining a connection with the wireless network. The terminal device can send a tracking area update request message, and after receiving the tracking area update request, the device on the network side can acquire the context of the terminal device, so that the terminal device can be supported to access the wireless network. However, the network side may not successfully acquire the context, which may result in no access to the network, so how the terminal device accesses the network is a technical problem to be solved. Disclosure of Invention The embodiment of the application provides a communication method and a communication device, which can enable a terminal device to successfully access a network. In order to achieve the above purpose, the application adopts the following technical scheme: In a first aspect, a communication method is provided. The communication method comprises the steps that the terminal device receives an attachment acceptance message in a non-storage forwarding mode, the terminal device receives storage forwarding indication information from a non-ground network device, the terminal device sends an attachment request message and a user permanent identification to a first mobile management network element, or the terminal device sends a first tracking area update request message and the user permanent identification to the first mobile management network element. The attach request message is used to request an attach to the network. The first tracking area update request message is for tracking area update. It should be understood that the attach accept message is used to indicate that the terminal device successfully attaches to the network in the non-store-and-forward mode. The store-and-forward indication information is used for indicating that the first mobility management network element operates in a store-and-forward mode. The user permanent identification is used for the terminal device to access the non-terrestrial network. The terminal device receives the store-and-forward instruction information from the non-terrestrial network device, and then executes the process after the terminal device receives the attach accept message in the non-store-and-forward mode. Based on the method provided in the first aspect, the terminal device receives an attach accept message in the non-store-and-forward mode, indicating that the terminal device is successfully attached to the network in the non-store-and-forward mode. The terminal device receives the store-and-forward instruction information of the non-terrestrial network, and indicates that the terminal device enters the coverage area of the non-terrestrial network in the store-and-forward mode, and therefore, at this time, the terminal device is switched from the non-store-and-forward mode to the store-and-forward mode. In this case, if the terminal apparatus transmits an attach request and a permanent user identifier, it is possible to support an attach procedure in the non-terrestrial network in the storage transfer mode, and thereby access the non-terrestrial network. If the terminal device sends the first tracking area update request message and the user permanent identifier, the first mobility management network element can obtain the user permanent identifier of the terminal device, and access to the non-terrestrial network according to the user permanent identifier. In addition, the solution provided in the first aspect can improve the problem that the network cannot be accessed due to the fact that the tracking area cannot be updated when the terminal device is switched from the non-store-and-forward mode to the store-and-forward mode, so as to support the terminal device to access the non-terrestrial network. By way of example, the terminal device may be a terminal equipment, a communication module, a circuit or chip responsible for communication functions, a system-on-a-chip, or other parts or components. The communication module, the circuit or the chip, the chip system or other parts or components responsible for the communication function can be applied to the terminal equipment. In a possible implementation manner, the method provided in the first aspect further includes determining, by the terminal device, to switch from the non-store-and-forward mode to the store-and-forward mode according to the store-and-forward indication information. Thus, whether to switch the mode is determined according to the store-and-forward indication information,