Patent ID: 9660804
Date: 2017-05-23
CPC Classifications: H04L,H04W

Claim:
1. An apparatus comprising: at least one computer processor; and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following: send a request message to a core network apparatus, indicating a capability of device-to-device communication of a first user equipment; receive a first security parameters from the core network apparatus; derive at the first user equipment, a first key based on the first security parameters and a key shared between the core network apparatus and the first user equipment; send a notification of device-to-device services to a second user equipment; receive a second security parameter from the second user equipment, wherein the second security parameter is a parameter for generating a second key based on the first key by an access network apparatus to which the first user equipment is registered; derive at the first user equipment, the second key based on the second security parameter and the first key, for protecting a device-to-device communication between the first user equipment and the second user equipment.