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EP-4742720-A1 - DATA TRANSMISSION METHODS, DEVICE, AND STORAGE MEDIUM

EP4742720A1EP 4742720 A1EP4742720 A1EP 4742720A1EP-4742720-A1

Abstract

Provided are data transmission methods, a device, and a storage medium. A data transmission method applied to a first network device includes: receiving a first authentication frame sent by a first multi-link device; and forwarding the first authentication frame to a second network device in response to the first authentication frame including an authentication identifier.

Inventors

  • YUAN, LIQUAN

Assignees

  • ZTE Corporation

Dates

Publication Date
20260513
Application Date
20240417

Claims (20)

  1. A data transmission method, applied to a first network device and comprising: receiving a first authentication frame sent by a first multi-link device; and forwarding the first authentication frame to a second network device in response to the first authentication frame comprising an authentication identifier.
  2. The method according to claim 1, wherein the first authentication frame is processed directly in response to the first authentication frame not comprising the authentication identifier.
  3. The method according to claim 1, further comprising: receiving, from the second network device, a second authentication frame comprising the authentication identifier; and forwarding the second authentication frame to the first multi-link device.
  4. The method according to claim 1, further comprising: parsing the first authentication frame to obtain a first authentication commit message or a first authentication confirm message that corresponds to the first authentication frame; and forwarding the first authentication commit message or the first authentication confirm message to the second network device in response to the first authentication frame comprising the authentication identifier.
  5. The method according to claim 4, further comprising: receiving a second authentication commit message or a second authentication confirm message that is sent by the second network device; combining the received authentication identifier, or an authentication identifier generated by the first network device with the second authentication commit message or the second authentication confirm message to form a corresponding second authentication frame; and forwarding the second authentication frame to the first multi-link device.
  6. The method according to any one of claims 1 to 5, wherein the authentication identifier comprises one of the following: a media access control, MAC, address of the first network device, a MAC address of the second network device, or roaming capability indication information.
  7. The method according to claim 1, further comprising: receiving a first Extensible Authentication Protocol over local area network, LAN, frame sent by the second network device, wherein the first Extensible Authentication Protocol over LAN frame at least carries a MAC address of the second network device; and forwarding the first Extensible Authentication Protocol over LAN frame to the first multi-link device.
  8. The method according to claim 7, further comprising: receiving a second Extensible Authentication Protocol over LAN frame sent by the first multi-link device, wherein the second Extensible Authentication Protocol over LAN frame at least carries link identifier information comprising a first network device identifier and an identifier of a link; and forwarding the second Extensible Authentication Protocol over LAN frame to the second network device.
  9. The method according to claim 8, wherein the first network device identifier comprises at least one of the following: a MAC address of the first network device or a first network device index.
  10. The method according to claim 8, further comprising: receiving a third Extensible Authentication Protocol over LAN frame sent by the second network device, wherein the third Extensible Authentication Protocol over LAN frame at least comprises the first network device identifier, the identifier of the link, and a group temporal key, GTK, on the link; and forwarding the third Extensible Authentication Protocol over LAN frame to the first multi-link device.
  11. The method according to claim 10, wherein the third Extensible Authentication Protocol over LAN frame further comprises a GTK field, and a frame structure of the GTK field at least comprises a first device identifier field, wherein the first device identifier field is configured to indicate the first network device identifier corresponding to the third Extensible Authentication Protocol over LAN frame.
  12. The method according to claim 10, wherein the third Extensible Authentication Protocol over LAN frame further comprises an integrity group temporal key, IGTK, information field, a beacon integrity group temporal key, BIGTK, information field, a robust security network element, RSNE, information field, and a robust security network extension element, RSNXE, information field; wherein a frame structure of the IGTK information field, a frame structure of the BIGTK information field, a frame structure of the RSNE information field, and a frame structure of the RSNXE information field each at least comprises the first device identifier field, wherein the first device identifier field is configured to indicate the first network device identifier corresponding to the third Extensible Authentication Protocol over LAN frame.
  13. A data transmission method, applied to a first multi-link device and comprising: sending a first authentication frame to a first network device to enable, in response to the first authentication frame comprising an authentication identifier, the first network device to forward the first authentication frame to a second network device.
  14. The method according to claim 13, further comprising: receiving a first Extensible Authentication Protocol over LAN frame forwarded by the first network device, wherein the first Extensible Authentication Protocol over LAN frame at least carries a media access control, MAC, address of the second network device.
  15. The method according to claim 14, further comprising: sending a second Extensible Authentication Protocol over LAN frame to the first network device, wherein the second Extensible Authentication Protocol over LAN frame at least carries link identifier information comprising a first network device identifier and an identifier of a link.
  16. The method according to claim 15, further comprising: receiving a third Extensible Authentication Protocol over LAN frame forwarded by the first network device, wherein the third Extensible Authentication Protocol over LAN frame at least comprises the first network device identifier, the identifier of the link, and a group temporal key on the link.
  17. The method according to claim 13, in response to an operation other than a four-way handshake, further comprising: receiving first key information on a new link that is sent by the second network device, wherein the first key information at least comprises link identifier information.
  18. A data transmission method, applied to a second network device and comprising: receiving a first authentication frame forwarded by a first network device, wherein the first authentication frame comprises an authentication identifier.
  19. The method according to claim 18, further comprising: sending a first Extensible Authentication Protocol over local area network, LAN, frame to the first network device, wherein the first Extensible Authentication Protocol over LAN frame at least carries a media access control, MAC, address of the second network device.
  20. The method according to claim 19, further comprising: receiving a second Extensible Authentication Protocol over LAN frame forwarded by the first network device, wherein the second Extensible Authentication Protocol over LAN frame at least carries link identifier information comprising a first network device identifier and an identifier of a link.

Description

TECHNICAL FIELD The present application relates to the technical field of communications and, in particular, to data transmission methods, a device, and a storage medium. BACKGROUND Under an ultra high reliability access point multi-link device (UHR AP MLD) architecture, a terminal that establishes a connection with a UHR AP MLD may be a non-AP MLD supporting a Wi-Fi 7 protocol or a non-AP MLD supporting a Wi-Fi 8 protocol. An authentication request frame transmitted using the Wi-Fi 7 protocol, along with another key-generation-related frame (for example, an Extensible Authentication Protocol over LAN (EAPOL) frame), needs to be processed at a high media access control (high MAC) layer in an extremely high throughput access point multi-link device (EHT AP MLD). A non-AP MLD that supports the Wi-Fi 8 protocol and requires a cross-EHT AP MLD multi-link connection needs to transmit these packets to high MAC of the UHR AP MLD for processing. In the related art, there is no signaling to indicate whether the non-AP MLD supports the cross-EHT AP MLD multi-link connection defined in Wi-Fi 8. Consequently, the EHT AP MLD cannot determine whether a received multi-link authentication request frame should be forwarded to the high MAC of the UHR AP MLD for processing or should be processed locally by the EHT AP MLD. SUMMARY In view of this, embodiments of the present application provide data transmission methods, a device, and a storage medium, which solve the technical problem in the related art that whether a received first authentication frame should be forwarded to a second network device for processing or should be processed locally by a first network device cannot be determined. An embodiment of the present application provides a data transmission method applied to a first network device. The data transmission method includes the steps below. A first authentication frame sent by a first multi-link device is received. The first authentication frame is forwarded to a second network device in response to the first authentication frame including an authentication identifier. An embodiment of the present application provides a data transmission method applied to a first multi-link device. The data transmission method includes the steps below. A first authentication frame is sent to a first network device to enable, in response to the first authentication frame including an authentication identifier, the first authentication frame to be forwarded to a second network device through the first network device. An embodiment of the present application provides a data transmission method applied to a second network device. The data transmission method includes the steps below. A first authentication frame forwarded by a first network device is received, where the first authentication frame includes an authentication identifier. An embodiment of the present application provides a communication device. The communication device includes a memory and at least one processor. The memory is configured to store at least one program. When executed by the at least one processor, the at least one program causes the at least one processor to perform the method according to any one of the preceding embodiments. An embodiment of the present application provides a storage medium storing a computer program which, when executed by a processor, causes the processor to perform the method according to any one of the preceding embodiments. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram illustrating implementation of a multi-link connection establishment process according to the related art.FIG. 2 is a diagram illustrating implementation of an interaction process of Simultaneous Authentication of Equals (SAE) multi-link authentication according to the related art.FIG. 3 is a diagram illustrating interaction implementation of a four-way handshake according to the related art.FIG. 4 is a diagram illustrating the format configuration of a multi-link operation (MLO) Link K Desktop Environment (KDE) according to the related art.FIG. 5 is a diagram illustrating the format configuration of an MLO group temporal key (GTK) KDE according to the related art.FIG. 6 is a diagram illustrating the format configuration of an integrity group temporal key (IGTK) KDE according to the related art.FIG. 7 is a diagram illustrating the format configuration of an MLO beacon integrity group temporal key (BIGTK) according to the related art.FIG. 8 is a configuration diagram of a UHR AP MLD architecture with centralized ultra high reliability upper media access control (UHR upper MAC) according to the related art.FIG. 9 is a configuration diagram of a connection model before roaming according to the related art.FIG. 10 is a configuration diagram of a connection model during roaming according to the related art.FIG. 11 is a configuration diagram of a connection model after roaming according to the related art.FIG. 12 is a network architecture diagram of a UHR AP MLD accor