Proximity based applications are becoming fast growing markets suggesting that Device-to-Device (D2D) communications is going to be an essential part of future mobile data networks. Thus studying the scalability of D2D communications is of paramount importance to accommodate future traffic demands. D2D communications has been proposed to improve the performance of mobile data networks by allowing devices to communicate directly without relaying traffic to the BS. This technique has the means of increasing spectrum and energy efficiency, reducing delay, improving coverage and supporting new proximity based applications. In this presentation we will introduce cutting-edge research in D2D communications. We will discuss key design aspects of D2D discovery to enable proximity-based communications. Then we will introduce the fundamental performance limits for D2D communications, which serve as the performance bench mark for practical D2D designs. In addition we will present several practical resource management and power control schemes and show that D2D has a huge potential in improving both network spectrum and energy efficiency, thus effectively expand the spectrum and energy capacity region for wireless networks. Finally scalable D2D communications with the lowest complexity possible will be introduced. We will show that while different levels of CSIs can be utilized to improve network performance, it's possible to achieve rather good performance without any CSI, thus enabling high-performance proximity applications without incurring any additional implementation cost in the air interface.

 

讲演者简介