Abstract
5G networks must provide a highly resilient, secure, and privacy-protected platform to support the emergence of new business and technologies expected from the so-called vertical-industry paradigm. However, as the definition and implementation of 5G networks are in progress, many security challenges arise. Thus, special emphasis will be given in the coming years to provide security and privacy for 5G and beyond networks. In this regard, physical layer security has been recognized as a potential solution to safeguard the confidentiality and privacy of communications in such stringent scenarios. In light of this, herein we provide an overview on some promising physical-layer techniques, focusing on the requirements and design challenges for machine-type communication scenarios. Key issues are discussed along with potential solutions.
Highlights
The design of practical wiretap codes that achieve the secrecy capacity limit at the finite blocklength regime, and satisfy the constrains of MTC scenarios and heterogeneous environments (including highly dynamic or poor scattering environments where a strong correlation between legitimate and wiretap channels can occur [8]) remains a challenging task
5G and beyond networks are envisioned to support a wide range of use cases for a myriad of industry sectors
The International Telecommunication Union (ITU) has classified 5G network services into three categories: enhanced Mobile Broadband, Ultra-Reliable and Low-Latency Communication (URLLC), and massive Machine-Type Communication. These services are suppose to coexist in the same network architecture by allocating network resources in such a way that the isolation among different inner logical networks is ensured through network slicing [1]
Summary
The design of practical wiretap codes that achieve the secrecy capacity limit at the finite blocklength regime, and satisfy the constrains of MTC scenarios and heterogeneous environments (including highly dynamic or poor scattering environments where a strong correlation between legitimate and wiretap channels can occur [8]) remains a challenging task. Pursuing novel, robust and low-complex solutions for secret group-key generation schemes from physical layer characteristics is an appealing research area for providing security in MTC networks.
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