Impact of Device-to-Device Communications on Cellular Communications in a Multi-Cell Scenario

• Autor(a) principal: Batista, Rodrigo Lopes
• Data de Publicação: 2013
• Outros Autores: Silva, Carlos Filipe Moreira e, Silva Júnior, José Mairton Barros da, Maciel, Tarcísio Ferreira, Cavalcanti, Francisco Rodrigo Porto
• Tipo de documento: Artigo de conferência
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
• Texto Completo: http://www.repositorio.ufc.br/handle/riufc/60240
• topic: Multi-cell scenario; Device-to-device communication; D2D; Network-assisted; Performance asses

Device-to-Device (D2D) communication, while being network-assisted, is seen as promising technology for the next generation of wireless systems as a mean to improve the utiliza tion of cellular spectrum and to reduce the energy consumption of User Equipments (UEs). However, D2D communications can generate significant interference to the cellular network when the same Physical Resource Blocks (PRBs) are shared by both systems. The design of an efficient D2D network underlaying the cellular network with minimal impact on cellular commu nications is the key problem. In this paper, we provide an impact assessment of D2D communications on the performance of cellular communications in a Long Term Evolution (LTE)-like multi-cell scenario through system-level simulations. Simulation results show that the overall system capacity is always improved when D2D communications are enabled. However, the performance loss of cellular communications in Downlink (DL) is highly significant. For Uplink (UL), the impact on cellular performance is less noticed, being almost negligible for the urban-macrocell environment and acceptable for the spatial multiplexing-based multi-antenna configuration scheme.