期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2018
卷号：6
期号：2
页码：1291
DOI：10.15680/IJIRCCE.2017.0602118
出版社：S&S Publications
摘要：In conventional cellular networks, users or devices are not allowed to transfer data directly even if theyare adjacent to each other. All the communication must take place through the BS or base station which acts as anintermediary between devices. This reduces the spectral efficiency and delays the communication. For such scenariosand also in cases where cellular communication fails in emergency or disaster hit times, D2D or Device-to-DeviceCommunication plays a pivotal role. D2D aims to provide spectral efficiency, increased throughput and reduced delayin information transfer. It is a hybrid technology encompassing cellular links and ad hoc links. D2D can either usecellular spectrum (inband or outband) or the unlicensed spectrum for establishing communication. This paper gives anoverall idea about D2D communication, techniques to achieve device to device communication, the issues that arisewhen it is implemented using unlicensed frequencies, benefits of using cellular frequencies for D2D transfer and how itcan be used to enhance the services in Vehicle to Vehicle Communication (V2V) using Internet of Things or IoT.
关键词：Device to Device Communication (D2D); Long Term Evolution; Internet of Things; Vehicle to;vehicle; spectral efficiency; inband; outband
