Patent ID: 11902787
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method performed by a second terminal performing vehicle-to-everything (V2X) communication with a first terminal in a wireless communication system, the method comprising:
receiving, from the first terminal, a direct communication request message for initiating the V2X communication, wherein the first terminal is associated with at least one first security policy corresponding to at least one PC5 unicast link and the second terminal is associated with at least one second security policy, wherein the at least one first security policy is provided to the second terminal by the first terminal, and wherein the at least one PC5 unicast link is associated with at least one V2X service;
determining whether the direct communication request message is acceptable, based on the at least one first security policy and the at least one second security policy, wherein the at least one first security policy includes a first user plane integrity protection or a first user plane confidentiality protection, and wherein the at least one second security policy includes a second user plane integrity protection or a second user plane confidentiality protection; and
activating a security of the at least one PC5 unicast link based on the at least one first security policy,
wherein the received direct communication request message is rejected in case that the first user plane integrity protection is set to not needed and the second user plane integrity protection is set to required.