[Paper Review] Survey on Terahertz Nanocommunication and Networking: A Top-Down Perspective

Filip Lemić, Sergi Abadal+6 more|arXiv (Cornell University)|Sep 12, 2019

Molecular Communication and Nanonetworks17 citations

TL;DR

This survey provides a comprehensive top-down analysis of terahertz (THz) nanocommunication and nanonetworking, focusing on electromagnetic communication using graphene-based nanodevices. It reviews applications, protocol stack layers, channel models, experimentation tools, and identifies key challenges and future research directions for enabling scalable, energy-efficient THz nanonetworks.

ABSTRACT

Recent developments in nanotechnology herald nanometer-sized devices expected to bring light to a number of groundbreaking applications. Communication with and among nanodevices will be needed for unlocking the full potential of such applications. As the traditional communication approaches cannot be directly applied in nanocommunication, several alternative paradigms have emerged. Among them, electromagnetic nanocommunication in the terahertz (THz) frequency band is particularly promising, mainly due to the breakthrough of novel materials such as graphene. For this reason, numerous research efforts are nowadays targeting THz band nanocommunication and consequently nanonetworking. As it is expected that these trends will continue in the future, we see it beneficial to summarize the current status in these research domains. In this survey, we therefore aim to provide an overview of the current THz nanocommunication and nanonetworking research. Specifically, we discuss the applications envisioned to be supported by nanonetworks operating in the THz band, together with the requirements such applications pose on the underlying nanonetworks. Subsequently, we provide an overview of the current contributions on the different layers of the protocol stack, as well as the available channel models and experimentation tools. As the final contribution, we identify a number of open research challenges and outline several potential future research directions.

Motivation & Objective

• To provide a systematic overview of current research in terahertz (THz) nanocommunication and nanonetworking for nanoscale devices.
• To identify application-driven requirements that shape the design of THz nanonetwork protocols and architectures.
• To analyze the state-of-the-art in protocol stack design, channel modeling, and experimentation tools for THz nanonetworks.
• To highlight open challenges and propose future research directions, particularly in energy efficiency, localization, mobility, and standardization.
• To advocate for the development of THz nanonetwork prototypes and interoperable protocols to enable real-world deployment.

Proposed method

• Conduct a top-down survey of THz nanocommunication and nanonetworking research, covering applications, protocol stack layers, and system components.
• Analyze electromagnetic communication using graphene-based surface plasmon polaritons (SPPs) in the THz band as a key enabling technology.
• Review existing channel models for THz nanocommunication, including path loss, shadowing, and multipath effects in various propagation environments.
• Survey available experimentation tools such as simulation frameworks, testbeds, and hardware prototypes for THz nanonetworks.
• Evaluate existing localization algorithms based on time-of-flight and backscattered signals, focusing on energy efficiency and accuracy trade-offs.
• Assess the IEEE P1906.1 standard for nanoscale communication and identify its limitations in power modeling, SNR, MAC/Network layer design, and integration with macro-networks.

Experimental results

Research questions

• RQ1 What are the key application domains enabled by THz nanonetworks, and what performance requirements do they impose on the underlying communication infrastructure?
• RQ2 How do graphene-based THz nanocommunication systems overcome the limitations of traditional metallic antennas in nanoscale devices?
• RQ3 What are the current state-of-the-art protocols and channel models for THz nanonetworking, and what are their strengths and weaknesses?
• RQ4 What are the major open challenges in THz nanonetworking, particularly regarding energy efficiency, localization, mobility, and security?
• RQ5 To what extent does the IEEE P1906.1 standard support the development of interoperable and scalable THz nanonetworks?

Key findings

• THz nanonetworks enabled by graphene-based electromagnetic communication offer a viable solution for nanoscale communication due to miniaturization, low power operation, and tunability via bias voltage.
• Graphene supports surface plasmon polaritons (SPPs) in the THz band, enabling sub-wavelength waveguiding and efficient nanoscale transmission with reduced propagation loss.
• Existing localization algorithms based on time-of-flight (ToF) and backscattered signals show promise for low-energy operation, but accuracy degrades with hop count and is sensitive to hardware imperfections.
• The IEEE P1906.1 standard lacks critical specifications for power modeling, SNR, MAC/network layer protocols, and interconnection with macro-networks, limiting its practical utility.
• Current experimentation tools and simulation frameworks are limited in scalability and realism, especially for in-body and complex propagation environments.
• Future research must prioritize prototyping, higher-layer protocol development, mobility management, and enhanced security and localization mechanisms to enable real-world deployment.