US 12,470,526 B2
Data transmission method and apparatus
Steven Yin Zhong, Singapore (SG); Xinxing Yin, Shanghai (CN); and Mingming Zhang, Shanghai (CN)
Assigned to SHENZHEN YINWANG INTELLIGENT TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Shenzhen Yinwang Intelligent Technologies Co., Ltd., Shenzhen (CN)
Filed on Oct. 26, 2022, as Appl. No. 17/973,767.
Application 17/973,767 is a continuation of application No. PCT/CN2020/112114, filed on Aug. 28, 2020.
Prior Publication US 2023/0067338 A1, Mar. 2, 2023
Int. Cl. H04L 9/40 (2022.01); H04L 67/12 (2022.01)
CPC H04L 63/0428 (2013.01) [H04L 63/123 (2013.01); H04L 63/20 (2013.01); H04L 67/12 (2013.01); H04L 2212/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A data transmission method, comprises:
obtaining, by a first electronic control unit (ECU) of a vehicle, to-be-sent data;
selecting, by the first ECU, a protection policy corresponding to the to-be-sent data from a plurality of protection policies based on a mapping relationship between an identifier comprised in the to-be-sent data and a security level of the to-be-sent data, wherein the identifier is of an ECU associated with a data type of the to-be-sent data, wherein the plurality of protection policies comprise a plurality of different encapsulation manners for the to-be-sent data, and wherein the plurality of protection policies comprise at least two protection policies with different calculation amounts for processing the to-be-sent data;
encapsulating, by the first ECU, the to-be-sent data according to the protection policy corresponding to the to-be-sent data, to obtain an encapsulated packet, wherein the encapsulated packet comprises a second identifier of the protection policy for the to-be-sent data, and wherein the second identifier is for identifying the security level for the to-be-sent data in the encapsulated packet; and
sending, by the first ECU, the encapsulated packet to a second ECU of the vehicle.