A Review on Ultra Reliable and Low Latency Communications (PHY and MAC Layer Perspectives)

Abstract

Fifth Generation (5G) wireless network plays major attention in the communication scenario due to the advanced features in data transmission. 5G is designed to overcome the issues, such as data rate, reliability, throughput, latency and capacity in the wireless network domains. The 5G wireless services aim to increase the data rate through massive communication services. In this survey, well known research papers based on low latency communication at the Physical layer (PHY) and Medium Access Control layer (MAC) are reviewed based on the Ultra-Reliable Low Latency Communication (URLLC) perspective. Here, the communication techniques are categorized as, structure-based model, resource reuse-based techniques, radio resource management techniques, scheduling based approach, diversity-based techniques and network slicing model based on the purpose of data communication. The issues and challenges faced by the existing research works are reviewed and discussed in the research gaps and issues section. Moreover, the analysis carried out in this survey is based on the evaluation parameters, network layer, network parameters, system, purpose and simulation toolsets. The future work of the URLLC research is based on the issues collected from the recent research papers reviewed in this study.

Survey on 5G Second Phase RAN Architectures and Functional splits

“…Trade-off between bandwidth and RRU complexity for different splits [88] FPGA Optimization of processing & bandwidth resource usage, minimizing the overall energy consumption compared to i) cell-centric, ii) distributed and iii) centralized Cloud-RAN approaches [109] Open Air Interface (OIA) Examine Ethernet as FH work in C-RAN, with focusing on the MAC and PHY split [110] Open Air Interface Theoretical & mathematical concepts [80], [111], [112], [113], [114], [115], [116], [104], [117], [118], [119], [120]…”