The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2019
Filed:
May. 12, 2014
Nokia Technologies Oy, Espoo, FI;
Dajiang Zhang, Beijing, CN;
Nokia Technologies Oy, Espoo, FI;
Abstract
Method, network element, user equipment (UE) and system are disclosed for securing device-to-device (D2D) communication in a wireless network. The wireless network has a first UE in an idle mode, a second UE in a connected mode, and a network element. The method comprises: encrypting the second UE's identification (ID) by using a first key which is known to the network element and the first UE and which is unknown to the second UE; sending the encrypted second UE's ID from the network element to the first UE via the second UE; and verifying the second UE's ID by using the encrypted second UE's ID. According to some embodiments, the method further comprises: deriving a D2D key for D2D communication between the first and second UEs, based on a random number and a second key which is known to the network element and the first UE; encrypting the D2D key based at least in part on a third key which is shared between the network element and the second UE and which is unknown to any other UE in the wireless network; and sending the encrypted D2D key from the network element to the second UE.