A survey on device-to-device (D2D) communication

摘要: The number of devices is expected to radically increase in near future, with an estimate above 50 billion connected by 2020. subscribers demand improved data rates, reduced latency and increased system capacity. To endure the rising demands, cellular networks need undergo suitable changes. For fulfillment needs users efficient utilization available scarce resources, device-to-device (D2D) communication being looked upon as important emerging technology for present future networks. It allows peer-to-peer between users, spectral efficiency, energy efficiency throughput. In this paper, a detailed survey on communications has been offered, along challenges which exist D2D (like resource allocation, security, interference management etc.) become successful paradigm wireless order fulfill subscriber needs, architecture proposed assures overcoming various implementation communication. paper largely focuses security possible attacks direct links are susceptible to. ensuring secure communication, solution proposed, based Internet Protocol Security (IP Sec). aims at providing optimal amount resources all system, be it user or user, adaptive manner. Such allocation avoids wastage improves throughput thereby enhancing overall network performance.Display Omitted Fundamentals (Fundamental architecture, Classification basis spectrum accessed degree involvement base station , channel models).Proposed time slot (cellular well users).Security communication: attacks, literature securing using IP Sec.