CPC Class H04W

A method of reducing a power consumption of a wireless device according to one embodiment includes performing, by the wireless device, a calibration of wireless communication circuitry of the wireless device in response to establishing a wireless communication connection with a wireless access point, determining, by the wireless device, a number of disconnections between the wireless device and the wireless access point over a predefined period of time, and increasing, by the wireless device, a sleep interval of the wireless communication circuitry of the wireless device in response to determining the number of disconnections between the wireless device and the wireless access point over the predefined period of time is less than a threshold number of disconnections.

An apparatus for a vehicle-to-everything (V2X) service establishes a secure session with a V2X server by using a transport layer security (TLS) handshake on the basis of an X.509 certificate of the V2X server. The apparatus generates a signed V2X message having a digital signature generated on the basis of a pseudonym certificate. The apparatus encodes the signed V2X message on the basis of the X.509 certificate.