Abstract: In a method for enabling a message receive end to quickly confirm a certificate status, a defined field of a certificate includes classification information of the certificate, and a defined field of a certificate revocation list includes classification information of a revoked certificate, so that the receive end can quickly narrow a searching or matching range in massive records of the certificate revocation list based on the classification information carried in the certificate of a transmit end.

Abstract: A communication method implemented by a communications apparatus that is configured with a control rule parameter, where the control rule parameter includes a signature verification rule parameter, a message aggregation rule parameter, and a reporting control rule parameter, and the method includes receiving a first message, performing signature verification processing on the first message based on the signature verification rule parameter, performing, based on the message aggregation rule parameter, message aggregation processing on the first message after performing the signature verification processing to obtain a second message, and sending the second message to a server based on the reporting control rule parameter.

Abstract: This application provides a wireless communication method and apparatus. The wireless communication method includes: A first device obtains first information, where the first information includes a correspondence between first customer premise equipment and at least one first terminal device, and a correspondence between the first terminal device and at least one second terminal device. The first device configures the first information on a second device, where the first information is used by the second device to verify that a received service packet is a service packet sent by the first terminal device to the second terminal device by using the first customer premise equipment.

Abstract: A vehicle-to-everything terminal provides a vehicle-to-everything server with a security credential that can prove an identity of the vehicle-to-everything terminal, and requests the vehicle-to-everything server to apply for a certificate for the vehicle-to-everything terminal. The security credential may be a token preconfigured in the vehicle-to-everything terminal, or may be a digital signature of the vehicle. The vehicle-to-everything server performs identity verification on the vehicle-to-everything terminal based on the security credential. After the verification succeeds, the vehicle-to-everything server selects a proper certificate server to apply for a certificate for the vehicle-to-everything terminal.

Abstract: A software upgrade management method for an unmanned and automated scheduling of an upgrade includes obtaining, by a server, an upgrade package, determining, by the server, a target upgrade mode for a terminal, where the target upgrade mode includes one of a server-determined upgrade mode, a terminal-determined upgrade mode, or a negotiated upgrade mode, and sending, by the server, the upgrade package to the terminal and performing, based on the target upgrade mode, a software upgrade procedure of the terminal.

Abstract: A software upgrade management method for an unmanned and automated scheduling of an upgrade includes obtaining, by a server, an upgrade package, determining, by the server, a target upgrade mode for a terminal, where the target upgrade mode includes one of a server-determined upgrade mode, a terminal-determined upgrade mode, or a negotiated upgrade mode, and sending, by the server, the upgrade package to the terminal and performing, based on the target upgrade mode, a software upgrade procedure of the terminal.

Abstract: The present disclosure provides a preparation method of 4-(heptafluoro-2-propyl)-2-trifluoromethylaniline and an application thereof. The preparation method comprises the following steps: reacting 2-aminobenzotrifluoride and 2-bromoheptafluoropropane in the presence of sodium formate or hydrates thereof and a SO2 reagent, so as to obtain 4-(heptafluoro-2-propyl)-2-trifluoromethylaniline. The present disclosure adds sodium formate or hydrate thereof and the SO2 reagent during the reaction of 2-aminobenzotrifluoride and 2-bromoheptafluoropropane. Under the cooperation of these two compounds, the yield of the reaction is high. And the purity of the product is high, the operation method is simple, the cost is relatively low, and the pH of the reaction doesn't need to be controlled.

Abstract: A software upgrade management method for an unmanned and automated scheduling of an upgrade includes obtaining, by a server, an upgrade package, determining, by the server, a target upgrade mode for a terminal, where the target upgrade mode includes one of a server-determined upgrade mode, a terminal-determined upgrade mode, or a negotiated upgrade mode, and sending, by the server, the upgrade package to the terminal and performing, based on the target upgrade mode, a software upgrade procedure of the terminal.

Abstract: The present disclosure provides a preparation method of 4-(heptafluoro-2-propyl)-2-trifluoromethylaniline and an application thereof. The preparation method comprises the following steps: reacting 2-aminobenzotrifluoride and 2-bromoheptafluoropropane in the presence of sodium formate or hydrates thereof and a SO2 reagent, so as to obtain 4-(heptafluoro-2-propyl)-2-trifluoromethylaniline. The present disclosure adds sodium formate or hydrate thereof and the SO2 reagent during the reaction of 2-aminobenzotrifluoride and 2-bromoheptafluoropropane. Under the cooperation of these two compounds, the yield of the reaction is high. And the purity of the product is high, the operation method is simple, the cost is relatively low, and the pH of the reaction doesn't need to be controlled.

Abstract: Disclosed are a 3-N-cyclopropylmethyl-2-fluorobenzamide compound, a preparation method therefor and the use thereof. The compound has a structure as represented by the following formula I. This compound can be used for the preparation of an m-diamide compound substituted with a 3-N-cyclopropylmethyl derivative. The m-diamide compound substituted with the 3-N-cyclopropylmethyl derivative, when serving as an insecticide, has the characteristics of a good fast-acting property, needing to use a low amount thereof, and being more beneficial for environmental protection. The 3-N-cyclopropylmethyl-2-fluorobenzamide compound is easy to synthesize and has mild conditions, and when used for preparing a m-diamide compound insecticide substituted with a 3-N-cyclopropylmethyl derivative, same is easy to synthesize and has a low synthesis cost and a high yield.

Abstract: Embodiments of this application provide a software upgrade method and an apparatus, to resolve problems such as high data traffic overheads and failure of timely upgrade when the first terminal device performs software upgrade based on an OTA technology. The method includes: A first terminal device receives OTA software upgrade information from a second terminal device; the first terminal device determines that a software upgrade package and OTA upgrade indication information that are included in the OTA software upgrade information are generated by a first network device and provided to the second terminal device; and the first terminal device performs software upgrade based on the software upgrade package after determining, based on the OTA upgrade indication information, that the second terminal device has permission to perform OTA upgrade on the first terminal device.

Abstract: Provided is a method for preparing an N-cyclopropylmethyl aniline compound, which comprises hydrogenating a compound represented by Formula II and cyclopropyl formaldehyde as raw materials in the presence of an acid and catalyst to generate an N-cyclopropylmethyl aniline compound represented by Formula I, wherein R is alkoxy, alkylamino or a substituted anilino group represented by Formula III.

Abstract: Provided is a method for preparing an N-cyclopropylmethyl aniline compound, which comprises hydrogenating a compound represented by Formula II and cyclopropyl formaldehyde as raw materials in the presence of an acid and catalyst to generate an N-cyclopropylmethyl aniline compound represented by Formula I, wherein R is alkoxy, alkylamino or a substituted anilino group represented by Formula III.

Abstract: The present disclosure provides a preparation method for m-diamide compounds. The method includes the following steps: 2-fluoro-3-nitrobenzoyl chloride and 4-(perfluoropropane-2-yl)-2-(trifluoromethyl)aniline are subjected to a condensation reaction, followed by a reduction reaction and an alkylation reaction to give 2-fluoro-3-(alkylamino)-N-(4-(perfluoropropane-2-yl)-2-(trifluoromethyl)phenyl)benzamide, which reacts with an acyl chloride compound to give 2-fluoro-3-(alkylbenzamido)-N-(4-(perfluoropropane-2-yl)-2-(trifluoromethyl)phenyl)benzamide, which is finally brominated to obtain the m-diamide compound. The reactions are almost quantitative with few by-products. Cryogenic and high-temperature reactions are not used. The introduction of bromine atoms at specific sites can be achieved in the final step. The preparation method has high yield and is more suitable for industrial production.

Abstract: A vehicle-to-everything (V2X) abnormal behavior detection method applied to a vehicle communications system that includes a V2X sending terminal, a V2X receiving terminal, and a V2X server. The method includes that the V2X receiving terminal receives a V2X message from the V2X sending terminal. The V2X receiving terminal determines, according to an abnormal behavior detection policy, that the V2X message is an abnormal message. The V2X receiving terminal sends a report message including the V2X message to the V2X server.

Abstract: A vehicle-to-everything terminal provides a vehicle-to-everything server with a security credential that can prove an identity of the vehicle-to-everything terminal, and requests the vehicle-to-everything server to apply for a certificate for the vehicle-to-everything terminal. The security credential may be a token preconfigured in the vehicle-to-everything terminal, or may be a digital signature of the vehicle. The vehicle-to-everything server performs identity verification on the vehicle-to-everything terminal based on the security credential. After the verification succeeds, the vehicle-to-everything server selects a proper certificate server to apply for a certificate for the vehicle-to-everything terminal.

Abstract: In a method for enabling a message receive end to quickly confirm a certificate status, a defined field of a certificate includes classification information of the certificate, and a defined field of a certificate revocation list includes classification information of a revoked certificate, so that the receive end can quickly narrow a searching or matching range in massive records of the certificate revocation list based on the classification information carried in the certificate of a transmit end.

Abstract: The present disclosure provides a preparation method for m-diamide compounds. The method includes the following steps: 2-fluoro-3-nitrobenzoyl chloride and 4-(perfluoropropane-2-yl)-2-(trifluoromethyl)aniline are subjected to a condensation reaction, followed by a reduction reaction and an alkylation reaction to give 2-fluoro-3-(alkylamino)-N-(4-(perfluoropropane-2-yl)-2-(trifluoromethyl)phenyl)benzamide, which reacts with an acyl chloride compound to give 2-fluoro-3-(alkylbenzamido)-N-(4-(perfluoropropane-2-yl)-2-(trifluoromethyl)phenyl)benzamide, which is finally brominated to obtain the m-diamide compound. The reactions are almost quantitative with few by-products. Cryogenic and high-temperature reactions are not used. The introduction of bromine atoms at specific sites can be achieved in the final step. The preparation method has high yield and is more suitable for industrial production.

Abstract: The present disclosure provides a bromination method for m-diamide compounds comprising reacting a compound represented by formula I with a brominating reagent in the presence of an oxidant to obtain a brominated product represented by formula II. The method adopts a special design of brominating reagents and reaction conditions to introduce a bromine atom at a specific site of the m-diamide compound, with 87.9 to 99.5% yield of a brominated product obtained by the reaction and higher than 91.8% purity. Therefore, the bromination method has a simple route, mild reaction conditions, high efficiency, and does not require complicated and cumbersome post-treatment processes; furthermore, raw materials used for the bromination reaction are readily available, costs of the brominating reagent are low, and the brominated product finally obtained has high yield and high purity, thus the method is a novel one with a broad application prospect.

Abstract: The present disclosure provides a bromination method for m-diamide compounds comprising reacting a compound represented by formula I with a brominating reagent in the presence of an oxidant to obtain a brominated product represented by formula II. The method adopts a special design of brominating reagents and reaction conditions to introduce a bromine atom at a specific site of the m-diamide compound, with 87.9 to 99.5% yield of a brominated product obtained by the reaction and higher than 91.8% purity. Therefore, the bromination method has a simple route, mild reaction conditions, high efficiency, and does not require complicated and cumbersome post-treatment processes; furthermore, raw materials used for the bromination reaction are readily available, costs of the brominating reagent are low, and the brominated product finally obtained has high yield and high purity, thus the method is a novel one with a broad application prospect.