Optimal links selection procedure in buffer‐aided relaying for point‐to‐multipoints communications. Issue 2 (1st January 2020)

• Record Type: Journal Article
• Authors: Chiti, Francesco; Fantacci, Romano; Pierucci, Laura
• Is Part Of: IET communications. Volume 14:Issue 2(2020)
• Page Start: 349
• Page End: 356
• Publication Date: 2020-01-01
• Subjects: protocols -- optimisation -- multicast communication -- Markov processes -- relay networks (telecommunication); dynamic quorum links selection -- buffer‐aided relaying -- multicast communications -- multicast throughput -- relay buffer occupancy -- multicast group -- point‐to‐multipoints communications -- smart devices -- Internet of Things -- communications patterns -- autonomous mode -- cell size reduction -- next‐generation IoT -- relay nodes -- point‐to‐multipoint services -- optimal links selection -- relaying communications -- Markov chain framework -- channel state estimation protocol -- DQm procedure; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2018.5689
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : The increasing diffusion of smart devices has triggered new Internet of Things (IoT) applications, where communications patterns are often in an autonomous mode. Key enabling technologies, such as relaying communications, cell size reduction and multicast communications have been identified to bring the next‐generation IoT to a complete fruition. In particular, the use of relay nodes is expected to be useful for coverage and capacity improvements, as well as to support point‐to‐multipoint services for data disseminating to subscribers communities. To this end, this study proposes a dynamic quorum links selection (DQ m ) procedure to optimise the throughput for the case of buffer‐aided relaying multicast communications. A theoretical analysis based on the Markov chain framework is provided and validated through simulation results in terms of multicast throughput and relay buffer occupancy for different sizes of the multicast group. The advantages of the proposed DQ m procedure have been highlighted by comparing the achieved performance with respect to classical conventional relay scheme. Finally, a protocol for channel state estimation is presented and the impact of the requested overhead on the performance of DQ m procedure is shown.