US 12,483,886 B2
Device authentication method and apparatus
Yacong Liang, Beijing (CN); Hui Xu, Beijing (CN); and Wei Zhou, Beijing (CN)
Assigned to DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD., Beijing (CN)
Appl. No. 18/711,572
Filed by DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD., Beijing (CN)
PCT Filed Nov. 21, 2022, PCT No. PCT/CN2022/133205
§ 371(c)(1), (2) Date May 17, 2024,
PCT Pub. No. WO2023/093668, PCT Pub. Date Jun. 1, 2023.
Claims priority of application No. 202111392897.3 (CN), filed on Nov. 23, 2021.
Prior Publication US 2024/0422536 A1, Dec. 19, 2024
Int. Cl. H04W 12/06 (2021.01); H04W 12/61 (2021.01); H04W 36/08 (2009.01)
CPC H04W 12/06 (2013.01) [H04W 12/61 (2021.01); H04W 36/08 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A device authentication method, comprising:
obtaining, by a target access point (AP), a first timestamp sent by a local service center (LSC) device and a second timestamp sent by a terminal, wherein the second timestamp is sent by the LSC device to the terminal, and the first timestamp and the second timestamp are sent by the LSC device based on an AP switching event;
when the first timestamp is consistent with the second timestamp, determining, by the target AP, that the terminal is an access terminal of the target AP;
wherein prior to the obtaining by the target AP the first timestamp sent by the LSC device, the method further comprises:
obtaining, by the target AP, a first AP switching request sent by the LSC device, wherein the first AP switching request is configured to request the terminal to switch from a source AP to the target AP;
sending, by the target AP, verification information to the LSC device according to the first AP switching request;
wherein the first timestamp is sent to the target AP after the LSC determines that the target AP is a licit AP according to the verification information;
wherein the verification information comprises identification information of the target AP and password information corresponding to the identification information;
prior to the obtaining by the target AP the first AP switching request sent by the LSC device, the method further comprises:
sending the identification information and a public-key certificate to the LSC device;
obtaining the password information corresponding to the identification information sent by the LSC, wherein the password information is encrypted through the public-key certificate.