CTMap: LLM-Enabled Connectivity-Aware Path Planning in Millimeter-Wave Digital Twin Networks

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Hauptverfasser: Parwez, Md Salik, Srivillibhutturu, Sai Teja, Kopparthi, Sai Venkat Reddy, Misba, Asfiya, Roy, Debashri, Olufowobi, Habeeb, Kim, Charles
Format: Preprint
Veröffentlicht: 2025
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author Parwez, Md Salik
Srivillibhutturu, Sai Teja
Kopparthi, Sai Venkat Reddy
Misba, Asfiya
Roy, Debashri
Olufowobi, Habeeb
Kim, Charles
author_facet Parwez, Md Salik
Srivillibhutturu, Sai Teja
Kopparthi, Sai Venkat Reddy
Misba, Asfiya
Roy, Debashri
Olufowobi, Habeeb
Kim, Charles
contents In this paper, we present \textit{CTMAP}, a large language model (LLM) empowered digital twin framework for connectivity-aware route navigation in millimeter-wave (mmWave) wireless networks. Conventional navigation tools optimize only distance, time, or cost, overlooking network connectivity degradation caused by signal blockage in dense urban environments. The proposed framework constructs a digital twin of the physical mmWave network using OpenStreetMap, Blender, and NVIDIA Sionna's ray-tracing engine to simulate realistic received signal strength (RSS) maps. A modified Dijkstra algorithm then generates optimal routes that maximize cumulative RSS, forming the training data for instruction-tuned GPT-4-based reasoning. This integration enables semantic route queries such as ``find the strongest-signal path'' and returns connectivity-optimized paths that are interpretable by users and adaptable to real-time environmental updates. Experimental results demonstrate that CTMAP achieves up to a tenfold improvement in cumulative signal strength compared to shortest-distance baselines, while maintaining high path validity. The synergy of digital twin simulation and LLM reasoning establishes a scalable foundation for intelligent, interpretable, and connectivity-driven navigation, advancing the design of AI-empowered 6G mobility systems.
format Preprint
id arxiv_https___arxiv_org_abs_2601_00110
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle CTMap: LLM-Enabled Connectivity-Aware Path Planning in Millimeter-Wave Digital Twin Networks
Parwez, Md Salik
Srivillibhutturu, Sai Teja
Kopparthi, Sai Venkat Reddy
Misba, Asfiya
Roy, Debashri
Olufowobi, Habeeb
Kim, Charles
Networking and Internet Architecture
In this paper, we present \textit{CTMAP}, a large language model (LLM) empowered digital twin framework for connectivity-aware route navigation in millimeter-wave (mmWave) wireless networks. Conventional navigation tools optimize only distance, time, or cost, overlooking network connectivity degradation caused by signal blockage in dense urban environments. The proposed framework constructs a digital twin of the physical mmWave network using OpenStreetMap, Blender, and NVIDIA Sionna's ray-tracing engine to simulate realistic received signal strength (RSS) maps. A modified Dijkstra algorithm then generates optimal routes that maximize cumulative RSS, forming the training data for instruction-tuned GPT-4-based reasoning. This integration enables semantic route queries such as ``find the strongest-signal path'' and returns connectivity-optimized paths that are interpretable by users and adaptable to real-time environmental updates. Experimental results demonstrate that CTMAP achieves up to a tenfold improvement in cumulative signal strength compared to shortest-distance baselines, while maintaining high path validity. The synergy of digital twin simulation and LLM reasoning establishes a scalable foundation for intelligent, interpretable, and connectivity-driven navigation, advancing the design of AI-empowered 6G mobility systems.
title CTMap: LLM-Enabled Connectivity-Aware Path Planning in Millimeter-Wave Digital Twin Networks
topic Networking and Internet Architecture
url https://arxiv.org/abs/2601.00110