The Study of D2d Communications in 5g Networks

The high transmission rate of 5G cellular networks can strongly promote the realization of Internet of Things (IoTs) and smart cities. However, the big data resulting from IoTs and smart cities may overload the 5G cellular networks because of the limited spectrum resources. To tackle this problem, device-to-device (D2D) communications have been proposed recently. D2D communications allow devices to communicate directly without using base stations for relaying. Thus, D2D communications can yield several merits such as increasing the spectral efficiency and system capacity, reducing network latency and power consumption of UEs, offloading the 5G cellular networks, and extending the network coverage. The possible use cases include machine-to-machine (M2M), vehicle-to-vehicle (V2V), smart grid, smart home/office automation, location-aware services in smart cities, social networking, proximity online gaming, e-health caring, and public safety services. However, to realize D2D communications, several challenging issues such as the device discovery, spectrum resource allocation, interference management, power control, and communication security, have to be solved. Therefore, this proposal will be conducted in two years. In the first year, we intend to design D2D device discovery mechanisms for various types of applications, including point-to-point and multicast group communications. In the second year, we aims to develop spectrum allocation and power control mechanisms over wireless cellular networks supporting D2D communications for avoiding interference.

Project ID:PB10701-1156
External Project ID:MOST106-2221-E182-012-MY2