Device-to-Device (D2D) communication is an advanced technology that offers various advantages for the LTE advanced network such us wireless peer-to-peer services and higher spectral efficiency. It is used in so many different fields such as network traffic offloading, public safety, social services and applications such as gaming and military applications. However, mobile users in today's cellular networks use high data rate services (e.g., video sharing, gaming, proximity-aware social networking) in which they could potentially be in range for direct communications (i.e., D2D). The objective of this paper is to present advances on the current 3GPP LTE-advanced system related to Device-to-Device (D2D). In this paper, we provide an overview of the D2D types based on the communication spectrum of D2D transmission, namely Inband D2D communication and Outband D2D communication. Then we present the proposed work for D2D communication. Hence, D2D communications in such scenarios can greatly increase the spectral efficiency of the network. The advantages of D2D communications go beyond spectral efficiency; they can potentially improve throughput, energy efficiency, delay, and fairness.