EP-4742718-A1 - DATA TRANSMISSION METHOD, ACCESS POINT DEVICE, STATION DEVICE, AND COMMUNICATION SYSTEM

EP4742718A1EP 4742718 A1EP4742718 A1EP 4742718A1EP-4742718-A1

Abstract

Embodiments of the present disclosure relate to a data transmission method, an access point device, a station device, and a communication system. The data transmission method comprises: determining a first radio frame, the first radio frame indicating time information, and the time information identifying extra time information required by a receiving device of the first radio frame to decrypt the first radio frame; and sending the first radio frame. In this way, the receiving device that receives the first radio frame can reserve a duration corresponding to the extra time information and decrypt the first radio frame, improving the transmission security of the first radio frame and making it so that the receiving device is unable to respond to function information of the first radio frame itself.

Inventors

DONG, Xiandong

Assignees

Beijing Xiaomi Mobile Software Co., Ltd.

Dates

Publication Date: 20260513
Application Date: 20230705

Claims (20)

A data transmission method, performed by an access point device, comprising: determining a first radio frame, wherein the first radio frame indicates time information, and the time information identifies additional time information required by a receiving device of the first radio frame to decrypt the first radio frame; and sending the first radio frame.
The method according to claim 1, wherein the time information comprises: time information reported by the receiving device; or time information having a longest corresponding duration among time information reported by a plurality of the receiving devices.
The method according to claim 1 or 2, wherein the first radio frame comprises a first duration identification bit, the first duration identification bit identifies an additional duration required by the receiving device to decrypt the first radio frame, and the additional duration comprises: the additional duration required by the receiving device to decrypt the first radio frame; or a longest additional duration among the additional durations required by a plurality of the receiving devices to decrypt the first radio frame.
The method according to claim 1 or 2, wherein before determining the first radio frame, the method further comprises: receiving a second radio frame sent by the receiving device, wherein the second radio frame indicates first capability information of the receiving device, and the first capability information indicates the additional time information required by the receiving device to decrypt the first radio frame.
The method according to claim 4, wherein the second radio frame comprises an ultra-high reliability (UHR) capability information element, and the UHR capability information element comprises a first capability identification bit and a second duration identification bit; the first capability identification bit identifies whether the receiving device supports a first capability, and the first capability comprises decrypting the first radio frame; and the second duration identification bit identifies an additional duration required by the receiving device to decrypt the first radio frame.
The method according to claim 5, wherein in a case that the first capability identification bit is set to a first parameter value, it is indicated that the receiving device supports the first capability.
The method according to claim 5, wherein the second duration identification bit is carried in a medium access control (MAC) capability field of the UHR capability information element; and the second duration identification bit is set to different parameter values, to indicate that different additional durations are required by the receiving device to decrypt the first radio frame.
The method according to claim 4, wherein the first capability information is multi-link device (MLD) level information in a case that the receiving device is affiliated to a multi-link device.
The method according to claim 4, wherein determining the first radio frame comprises: appending the time information after a frame check sequence (FCS) field of a unicast control frame to obtain the first radio frame, in a case that the first radio frame is the unicast control frame; and appending the time information after a common information (common info) field of a broadcast control frame to obtain the first radio frame, in a case that the first radio frame is the broadcast control frame.
The method according to claim 9, wherein, the first radio frame is the unicast control frame in case of one receiving device; and the first radio frame is the broadcast control frame in case of at least two receiving devices.
The method according to claim 1, wherein the time information is not indicated in the first radio frame in a case that the first radio frame carries at least one of high efficiency (HE) information, extremely high throughput (EHT) information or UHR information.
The method according to claim 1, wherein sending the first radio frame comprises: sending the first radio frame and instructing the receiving device to decrypt the first radio frame according to the additional time information.
A data transmission method, comprising: receiving a first radio frame, wherein the first radio frame indicates time information, and the time information identifies additional time information required by a receiving device of the first radio frame to decrypt the first radio frame.
The method according to claim 13, wherein the time information comprises: time information reported by the receiving device; or time information having a longest corresponding duration among time information reported by a plurality of the receiving devices.
The method according to claim 13 or 14, wherein the first radio frame comprises a first duration identification bit, the first duration identification bit identifies an additional duration required by the receiving device to decrypt the first radio frame, and the additional duration comprises: the additional duration required by the receiving device to decrypt the first radio frame; or a longest additional duration among the additional durations required by a plurality of the receiving devices to decrypt the first radio frame.
The method according to claim 13 or 14, wherein before receiving the first radio frame, the method further comprises: determining a second radio frame, wherein the second radio frame indicates first capability information, and the first capability information indicates the additional time information required to decrypt the first radio frame; and sending the second radio frame.
The method according to claim 16, wherein the second radio frame comprises an ultra-high reliability (UHR) capability information element, and the UHR capability information element comprises a first capability identification bit and a second duration identification bit; the first capability identification bit identifies whether the first capability is supported, and the first capability comprises decrypting the first radio frame; and the second duration identification bit identifies an additional duration required to decrypt the first radio frame.
The method according to claim 17, wherein in a case that the first capability identification bit is set to a first parameter value, it is indicated that the first capability is supported.
The method according to claim 17, wherein the second duration identification bit is carried in a medium access control (MAC) capability field of the UHR capability information element; and the second duration identification bit is set to different parameter values, to indicate that different additional durations are required to decrypt the first radio frame.
The method according to claim 16, wherein the first capability information is multi-link device (MLD) level information in a case that the receiving device is affiliated to a multi-link device.

Description

FIELD The present disclosure relates to the field of communication technologies, and more particularly to a data transmission method, an access point device, a station device and a communication system. BACKGROUND At present, the research contents of Wi-Fi technology, such as ultra-high reliability (UHR), are aimed at improving the reliability of wireless local area network (WLAN) connection, reducing delay, improving manageability, increasing throughput at different signal to noise ratio (SNR) levels and reducing device-level power consumption. However, according to the research in related technologies, it is necessary to improve the transmission security of data frames. SUMMARY Embodiments of the present disclosure provide a data transmission method, an access point device, a station device and a communication system, so as to provide a mechanism for improving the security of data transmission. Embodiments of a first aspect of the present disclosure provide a data transmission method, which includes: determining a first radio frame, where the first radio frame indicates time information, and the time information identifies additional time information required by a receiving device of the first radio frame to decrypt the first radio frame; and sending the first radio frame. Embodiments of a second aspect of the present disclosure provide a data transmission method, which includes: receiving a first radio frame, where the first radio frame indicates time information, and the time information identifies additional time information required by a receiving device of the first radio frame to decrypt the first radio frame. Embodiments of a third aspect of the present disclosure provide an access point device, which includes: a radio frame determining module configured to determine a first radio frame, where the first radio frame indicates time information, and the time information identifies additional time information required by a receiving device of the first radio frame to decrypt the first radio frame; and a radio frame sending module configured to send the first radio frame. Embodiments of a fourth aspect of the present disclosure provide a station device, which includes: a radio frame receiving module configured to receive a first radio frame, where the first radio frame indicates time information, and the time information identifies additional time information required by a receiving device of the first radio frame to decrypt the first radio frame. Embodiments of a fifth aspect of the present disclosure provide an access point device, which includes: one or more processors. The access point device is configured to perform the data transmission method according to optional embodiments of the first aspect. Embodiments of a sixth aspect of the present disclosure provide a station device, which includes: one or more processors. The station device is configured to perform the data transmission method according to optional embodiments of the second aspect. Embodiments of a seventh aspect of the present disclosure provide a communication system, which includes an access point device and a station device. The access point device is configured to perform the data transmission method according to the first aspect, and the station device is configured to perform the data transmission method according to optional embodiments of the second aspect. Embodiments of an eighth aspect of the present disclosure provide a storage medium, storing instructions which, when executed on a communication device, cause the communication device to perform the data transmission method according to optional embodiments of the first aspect or the second aspect. Additional aspect and advantages of the embodiments of the present disclosure will be set forth in part in the description which follows, and will be obvious from the description which follows, or may be learned by practice of the present disclosure. It is to be understood that both the foregoing general description and the following detailed description are illustrative and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly explain the technical scheme in the embodiments of the present disclosure, the following drawings are introduced, which are only some embodiments of the present disclosure and do not specifically limit the protection scope of the present disclosure. Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present disclosure.Fig. 2 is a schematic interaction diagram of a communication method according to an embodiment of the present disclosure.Fig. 3 is a schematic flowchart of a communication method according to an embodiment of the present disclosure.Fig. 4 is another schematic flowchart of a communication method according to an embodiment of the present disclosure.Fig. 5 is another schematic interaction diagram of a communication method