Optimal Operating Condition for Co-located Device-to-Device Paris

ABSTRACT

In device-to-device (D2D) communication, users in close proximity to each other can communicate directly without going through a base station; such direct communication can improve spectral efficiency. However, D2D links may generate high interference to cellular user equipment (UE) located in their communication areas if they use the same channel with the UE for data transmission. D2D communication could also generate interference for each D2D pair when the common wireless medium in a co-located limited area is accessed. Although, to solve this problem, research on reducing or avoiding interference between D2D and cellular UE in network supporting D2D communication was conducted, the interference managements are still not fully studied for between D2D pairs. In this paper, we investigate the problem of D2D pair coexistence in which interference is considered between D2D pairs. By analytically deriving an operating condition for D2D pairs deployed within the same region, we provide a lower bound on the throughput of D2D pair networks and the optimal number of D2D pairs that can coexist.

Keywords:

• Co-located
• Device-to-device communication
• Interference
• Operating condition

ACKNOWLEDGEMENTS

This work was supported by BK21 plus.

Additional information

Notes on contributors

Seung-Yeon Kim

Seung-Yeon Kim received the Ph.D. degree in electronics and information engineering in 2012 from Korea University, Korea. He is currently a professor in the Department of Computer and Information Science. He has participated in various research projects involving an IMT-advanced system, cognitive radio, and interference management. His research interests include performance evaluation of communication networks.

Email: [email protected]

Choong-Ho Cho

Choong-Ho Cho received B.S. and M.S. degrees in industrial engineering from Korea University in 1981 and 1983, respectively. He received M.S. and Ph.D. degrees in computer science from the Institute National des Sciences Appliques, Lyon, France, in 1986 and 1989, respectively. He is currently a professor at Korea University. His research interests include ubiquitous home networks, mobile/wireless networks, network traffic analysis, portable Internet, and wireless mesh networks.

Email: [email protected]