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EP-4738925-A1 - NETWORK SWITCHING METHOD AND APPARATUS, COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND STORAGE MEDIUM

EP4738925A1EP 4738925 A1EP4738925 A1EP 4738925A1EP-4738925-A1

Abstract

The present disclosure provides a network switching method and apparatus, a device, and a storage medium. The method comprises: a terminal receives first information sent by a first network device, the first information being used to indicate cell information of one or more second network devices. Network types covered by the first network device and the second network devices are different, and the terminal can switch between cells having different network types, thereby improving continuity of service.

Inventors

  • LAI, QINGYU
  • ZHANG, HUILONG
  • ZHU, YAJUN

Assignees

  • Beijing Xiaomi Mobile Software Co., Ltd.

Dates

Publication Date
20260506
Application Date
20230627

Claims (20)

  1. A method for network handover, performed by a terminal, comprising: receiving first information sent from a first network device, wherein the first information indicates cell information of one or more second network devices, and a network type covered by the first network device is different from a network type covered by the second network device.
  2. The method according to claim 1, wherein the first network device is a non-terrestrial network (NTN) device, the second network device is a terrestrial network (TN) device, and the first information comprises at least one of: a cell identifier of the TN device, an access threshold of the TN device, or a type of measurement to be performed on the TN device.
  3. The method according to claim 1, wherein the first network device is a terrestrial network (TN) device, the second network device is a non-terrestrial network (NTN) device, and the first information comprises at least one of: a satellite identifier of the NTN device, ephemeris information of the NTN device, an access threshold of the NTN device, or a type of measurement to be performed on the NTN device.
  4. The method according to any one of claims 1 to 3, further comprising: receiving second information sent from the first network device, wherein the second information comprises configuration information for the terminal to perform measurement on the second network device; obtaining a measurement result of the second network device by performing measurement on the second network device based on the second information; and sending the measurement result to the first network device.
  5. The method according to any one of claims 1 to 4, further comprising: determining, based on the first information, a target network device from the one or more second network devices.
  6. The method according to claim 4, further comprising: disconnecting a communication connection with the first network device, and establishing a communication connection with the target network device.
  7. A method for network handover, performed by a first network device, comprising: sending first information to a terminal, wherein the first information indicates cell information of one or more second network devices, and a network type covered by the first network device is different from a network type covered by the second network device.
  8. The method according to claim 7, wherein the first network device is a non-terrestrial network (NTN) device, the second network device is a terrestrial network (TN) device, and the first information comprises at least one of: a cell identifier of the TN device, an access threshold of the TN device, or a type of measurement to be performed on the TN device.
  9. The method according to claim 7, wherein the first network device is a terrestrial network (TN) device, the second network device is a non-terrestrial network (NTN) device, and the first information comprises at least one of: a satellite identifier of the NTN device, ephemeris information of the NTN device, an access threshold of the NTN device, or a type of measurement to be performed on the NTN device.
  10. The method according to any one of claims 7 to 9, further comprising: sending second information to the terminal, wherein the second information comprises configuration information for the terminal to perform measurement on the second network device; and receiving a measurement result sent from the terminal, wherein the measurement result is obtained by the terminal performing measurement on the second network device based on the second information.
  11. The method according to any one of claims 7 to 10, further comprising: determining a link state between the first network device and the terminal.
  12. The method according to claim 11, further comprising: sending a first request to the second network device, wherein the first request indicates the second network device to perform admission control for a conditional handover and to allocate resources for the terminal.
  13. The method according to claim 12, further comprising: receiving third information sent from the second network device, wherein the third information indicates a result of the admission control for the conditional handover performed by the second network device, and the third information comprises cell information of the second network device permitted to be accessed by the terminal.
  14. The method according to claim 13, further comprising: receiving fourth information sent from a target network device, wherein the target network device is determined by the terminal from the second network devices, and the fourth information indicates the first network device to release resources for communication with the terminal.
  15. The method according to claim 14, further comprising: sending fifth information to a third network device, wherein the third network device is a second network device other than the target network device, and the fifth information indicates the third network device to release reserved resources.
  16. A terminal, comprising: a transceiver module, configured to receive first information sent from a first network device, wherein the first information indicates cell information of one or more second network devices, and a network type covered by the first network device is different from a network type covered by the second network device.
  17. A first network device, comprising: a transceiver module, configured to send first information to a terminal, wherein the first information indicates cell information of one or more second network devices, and a network type covered by the first network device is different from a network type covered by the second network device.
  18. A communication device, comprising: a transceiver; a memory; and a processor respectively connected to the transceiver and the memory, configured to control wireless signal transmission and reception of the transceiver by executing computer-executable instructions stored in the memory, and enable the method according to any one of claims 1 to 15 to be implemented.
  19. A computer storage medium, storing computer-executable instructions which, when executed by a processor, enable the method according to any one of claims 1 to 15 to be implemented.
  20. A communication system, comprising a terminal, configured to perform the method according to any one of claims 1 to 6, and a first network device, configured to perform the method according to any one of claims 7 to 15.

Description

TECHNICAL FIELD The disclosure relates to the field of wireless communication technologies, and in particular to a method and an apparatus for network handover, a communication device, a communication system, and a storage medium. BACKGROUND Non-terrestrial network (NTN) communication is an important technology introduced in fifth generation (5G) mobile communication technology, providing wireless resources via satellites or drones rather than terrestrial base stations. The combination of an NTN communication system and a terrestrial network (TN) communication system may extend coverage for the TN communication system, provide emergency communications, offer specific industry applications, and truly realize intelligent connectivity of everything. However, current TNs and NTNs are relatively independent, failing to achieve true mutual integration, thus the service continuity needs to be improved. SUMMARY The disclosure provides a method and an apparatus for network handover, a communication device, a communication system, and a storage medium. According to a first aspect of embodiments of the disclosure, a method for network handover is provided. The method includes: receiving first information sent from a first network device, in which the first information indicates cell information of one or more second network devices, and a network type covered by the first network device is different from a network type covered by the second network device. This achieves handover performed by the terminal between cells of different network types and improves service continuity. According to a second aspect of embodiments of the disclosure, a method for network handover is provided. The method includes: sending first information to a terminal, in which the first information indicates cell information of one or more second network devices, and a network type covered by the first network device is different from a network type covered by the second network device. According to a third aspect of embodiments of the disclosure, a first terminal is provided. The first terminal includes: a transceiver module, configured to receive first information sent from a first network device, in which the first information indicates cell information of one or more second network devices, and a network type covered by the first network device is different from a network type covered by the second network device. According to a fourth aspect of embodiments of the disclosure, a first network device is provided. The first network device includes: a transceiver module, configured to send first information to a terminal, in which the first information indicates cell information of one or more second network devices, and a network type covered by the first network device is different from a network type covered by the second network device. According to a fifth aspect of embodiments of the disclosure, a communication device is provided. The communication device includes: a transceiver; a memory; and a processor respectively connected to the transceiver and the memory, configured to control wireless signal transmission and reception of the transceiver by executing computer-executable instructions stored in the memory, and enable the method according to the first aspect and the method according to the second aspect to be realized. According to a sixth aspect of embodiments of the disclosure, a computer storage medium is provided. The computer storage medium stores computer-executable instructions which, when executed by a processor, enable the method according to the first aspect and the method according to the second aspect to be implemented. According to a seventh aspect of embodiments of the disclosure, a communication system is provided. The communication system includes a terminal, configured to perform the method according to the first aspect, and a first network device, configured to perform the method according to the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS The above-mentioned and/or additional aspects and advantages of the disclosure will become apparent and readily appreciated from the following description of embodiments in conjunction with the accompanying figures. FIG. 1a to FIG. 1b are schematic diagrams illustrating an architecture of a communication system according to an embodiment of the disclosure.FIG. 2 is a schematic diagram illustrating interaction in a method for network handover according to an embodiment of the disclosure.FIG. 3a to FIG. 3b are flowcharts illustrating a method for network handover according to another embodiment of the disclosure.FIG. 4a to FIG. 4b are flowcharts illustrating a method for network handover according to another embodiment of the disclosure.FIG. 5 is a flowchart illustrating a method for network handover according to another embodiment of the disclosure.FIG. 6 is a flowchart illustrating a method for network handover according to another embodiment of the disclosure.FIG. 7a is a blo