الفهرس 
Only 14 pages are availabe for public view
Abstract
Device-to-Device (D2D) communication refers to a radio technology that
enables devices to communicate directly with each other, that is without routing the
data paths through a network infrastructure. D2D communication implies new
challenges for devices design, interference management, security, mobility
management and other aspects. In addition, the success of this technology largely
depends on the scenarios in which users in the proximity of each other communicate
and the applications that will be developed in the coming years. However, typical
D2D communication in 5G network which is typical telecommunication network has
various security challenges including impersonation, eavesdropping, privacy sniffing,
free-riding attack, etc. Secure D2D communication data is essential for fighting
malicious attacks. However, secure D2D communications among mobile devices have
not been well solved. Toward these problems, security enhancement for D2D
communication is proposed in this thesis. For achieving this enhancement in security
for D2D communication two stages of security are implemented. First stage is
authentication protocol and second stage is radio link encryption.