2018/04/13 by Petar Popovski, Kasper Fløe Trillingsgaard, Popovski, Petar +5 · 4 citations
Computer Science · Engineering · #FOS: Computer and information sciences #Information Theory (cs.IT) #IoT Networks and Protocols #IoT and Edge/Fog Computing #Networking and Internet Architecture (cs.NI) #Software-Defined Networks and 5G
paper · pdf · doi:10.48550/arxiv.1804.05057
openalex publication_date 2018/04/13 · openalex created_date 2022/10/03 · openalex updated_date 2026/07/28
The grand objective of 5G wireless technology is to support three generic\nservices with vastly heterogeneous requirements: enhanced mobile broadband\n(eMBB), massive machine-type communications (mMTC), and ultra-reliable\nlow-latency communications (URLLC). Service heterogeneity can be accommodated\nby network slicing, through which each service is allocated resources to\nprovide performance guarantees and isolation from the other services. Slicing\nof the Radio Access Network (RAN) is typically done by means of orthogonal\nresource allocation among the services. This work studies the potential\nadvantages of allowing for non-orthogonal sharing of RAN resources in uplink\ncommunications from a set of eMBB, mMTC and URLLC devices to a common base\nstation. The approach is referred to as Heterogeneous Non-Orthogonal Multiple\nAccess (H-NOMA), in contrast to the conventional NOMA techniques that involve\nusers with homogeneous requirements and hence can be investigated through a\nstandard multiple access channel. The study devises a communication-theoretic\nmodel that accounts for the heterogeneous requirements and characteristics of\nthe three services. The concept of reliability diversity is introduced as a\ndesign principle that leverages the different reliability requirements across\nthe services in order to ensure performance guarantees with non-orthogonal RAN\nslicing. This study reveals that H-NOMA can lead, in some regimes, to\nsignificant gains in terms of performance trade-offs among the three generic\nservices as compared to orthogonal slicing.\n