Journal Articles
Katsigiannis, Chrysostomos-Athanasios; Tsachrelias, Konstantinos; Kokkinos, Vasileios; Gkamas, Apostolos; Bouras, Christos; Pouyioutas, Philippos
Energy Efficiency Optimization in Heterogeneous 5G Networks Using DUDe Journal Article
In: Electronics Journal, Special Issue Feature Papers in Networks: 2025 - 2026, MDPI,, vol. 14, 2025.
Abstract | Links | BibTeX | Tags:
@article{nokey,
title = {Energy Efficiency Optimization in Heterogeneous 5G Networks Using DUDe},
author = {Chrysostomos-Athanasios Katsigiannis and Konstantinos Tsachrelias and Vasileios Kokkinos and Apostolos Gkamas and Christos Bouras and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/electronics-14-04641-with-cover/},
year = {2025},
date = {2025-11-20},
journal = {Electronics Journal, Special Issue Feature Papers in Networks: 2025 - 2026, MDPI,},
volume = {14},
abstract = {To meet the escalating data demands of 5G and beyond networks, densified Heterogeneous Networks (HetNets) provide a promising solution, deploying small base stations for improved spectral and energy efficiency. However, HetNets pose challenges, particularly in user association. This journal introduces the Downlink/Uplink Decoupling (DUDe) approach, which enhances uplink performance in HetNets by allowing different access points for uplink and downlink associations. We assess DUDe’s energy efficiency through extensive simulations across various scenarios, demonstrating substantial energy savings compared to centralized 5G systems. Our findings underscore the importance of energy-efficient design for reducing network operational costs and carbon footprint in 5G networks. In addition to energy efficiency gains, DUDe also offers improved resource allocation and network flexibility, making it a valuable solution for evolving wireless communication ecosystems.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
To meet the escalating data demands of 5G and beyond networks, densified Heterogeneous Networks (HetNets) provide a promising solution, deploying small base stations for improved spectral and energy efficiency. However, HetNets pose challenges, particularly in user association. This journal introduces the Downlink/Uplink Decoupling (DUDe) approach, which enhances uplink performance in HetNets by allowing different access points for uplink and downlink associations. We assess DUDe’s energy efficiency through extensive simulations across various scenarios, demonstrating substantial energy savings compared to centralized 5G systems. Our findings underscore the importance of energy-efficient design for reducing network operational costs and carbon footprint in 5G networks. In addition to energy efficiency gains, DUDe also offers improved resource allocation and network flexibility, making it a valuable solution for evolving wireless communication ecosystems.
Tsachrelias, Konstantinos; Katsigiannis, Chrysostomos-Athanasios; Kokkinos, Vasileios; Gkamas, Apostolos; Bouras, Christos; Pouyioutas, Philippos
Game Theory Algorithms for Resource Allocation in 5G MIMO Journal Article
In: International Journal of Interactive Mobile Technologies, vol. 19, no. 13, 2025.
Abstract | Links | BibTeX | Tags:
@article{nokeyb,
title = {Game Theory Algorithms for Resource Allocation in 5G MIMO},
author = {Konstantinos Tsachrelias and Chrysostomos-Athanasios Katsigiannis and Vasileios Kokkinos and Apostolos Gkamas and Christos Bouras and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/ijem2/},
year = {2025},
date = {2025-07-08},
urldate = {2025-07-08},
journal = {International Journal of Interactive Mobile Technologies},
volume = {19},
number = {13},
abstract = {Efficient resource allocation is essential in 5G MIMO networks due to increasing demands for high-quality communications. This paper compares four game theory algorithms: Stackelberg, Nash Bargaining, Mean Field Game, and Potential Game, evaluating their effectiveness in allocating resources dynamically. A simulation environment is developed to represent realistic user mobility by continuously updating user equipment (UE) positions. Each algorithm is assessed based on UE distribution, fairness, bandwidth consumption, and energy efficiency. The simulation results show clear differences among the algorithms, highlighting specific advantages and limitations that help inform resource allocation strategies in practical 5G network scenarios.},
keywords = {},
pubstate = {published},
tppubtype = {article}
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Efficient resource allocation is essential in 5G MIMO networks due to increasing demands for high-quality communications. This paper compares four game theory algorithms: Stackelberg, Nash Bargaining, Mean Field Game, and Potential Game, evaluating their effectiveness in allocating resources dynamically. A simulation environment is developed to represent realistic user mobility by continuously updating user equipment (UE) positions. Each algorithm is assessed based on UE distribution, fairness, bandwidth consumption, and energy efficiency. The simulation results show clear differences among the algorithms, highlighting specific advantages and limitations that help inform resource allocation strategies in practical 5G network scenarios.
Tsachrelias, Konstantinos; Katsigiannis, Chrysostomos-Athanasios; Kokkinos, Vasileios; Gkamas, Apostolos; Bouras, Christos; Pouyioutas, Philippos
Performance Evaluation of Downlink – Uplink Decoupling in 5G Multiple Input Multiple Output Networks Journal Article
In: International Journal of Interactive Mobile Technologies, vol. 19, no. 19, pp. 87-106, 2025.
Abstract | Links | BibTeX | Tags:
@article{nokeyc,
title = {Performance Evaluation of Downlink – Uplink Decoupling in 5G Multiple Input Multiple Output Networks},
author = {Konstantinos Tsachrelias and Chrysostomos-Athanasios Katsigiannis and Vasileios Kokkinos and Apostolos Gkamas and Christos Bouras and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/ijem1/},
year = {2025},
date = {2025-07-08},
urldate = {2025-07-08},
journal = {International Journal of Interactive Mobile Technologies},
volume = {19},
number = {19},
pages = {87-106},
abstract = {In the landscape of 5G networks, efficient resource allocation stands as a critical factor in meeting the diverse demands of applications and users. This paper delves into optimizing resource allocation within 5G Multiple Input Multiple Output (MIMO) networks by leveraging Downlink/Uplink Decoupling (DUDe) techniques. MIMO technology, enabling the simultaneous transmission of multiple data streams, holds promise for boosting spectral efficiency. However, accommodating the dynamic and diverse user requirements poses a significant challenge in resource allocation. By employing advanced DUDe techniques, this research dynamically allocates resources in 5G MIMO Heterogeneous Networks (HetNets), seeking to enhance throughput, minimize latency, and optimize user satisfaction. The paper includes scenarios involving varying User Equipment (UE) densities and mobility to evaluate system performance under different load conditions. Through simulation-based analysis, this paper highlights the efficacy of the proposed approach in significantly improving network performance, energy efficiency, and resource utilization.},
keywords = {},
pubstate = {published},
tppubtype = {article}
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In the landscape of 5G networks, efficient resource allocation stands as a critical factor in meeting the diverse demands of applications and users. This paper delves into optimizing resource allocation within 5G Multiple Input Multiple Output (MIMO) networks by leveraging Downlink/Uplink Decoupling (DUDe) techniques. MIMO technology, enabling the simultaneous transmission of multiple data streams, holds promise for boosting spectral efficiency. However, accommodating the dynamic and diverse user requirements poses a significant challenge in resource allocation. By employing advanced DUDe techniques, this research dynamically allocates resources in 5G MIMO Heterogeneous Networks (HetNets), seeking to enhance throughput, minimize latency, and optimize user satisfaction. The paper includes scenarios involving varying User Equipment (UE) densities and mobility to evaluate system performance under different load conditions. Through simulation-based analysis, this paper highlights the efficacy of the proposed approach in significantly improving network performance, energy efficiency, and resource utilization.
Katsigiannis, Chrysostomos-Athanasios; Tsachrelias, Konstantinos; Bouras, Christos; Kokkinos, Vasileios; Gkamas, Apostolos; Pouyioutas, Philippos
Simulation Based Energy Efficiency Analysis and Evaluation of DUDe 5G Networks Journal Article
In: International Journal on Advances in Networks and Services (to appear), vol. 17, no. 3&4, 2024.
Abstract | Links | BibTeX | Tags:
@article{nokeyf,
title = {Simulation Based Energy Efficiency Analysis and Evaluation of DUDe 5G Networks},
author = {Chrysostomos-Athanasios Katsigiannis and Konstantinos Tsachrelias and Christos Bouras and Vasileios Kokkinos and Apostolos Gkamas and Philippos Pouyioutas},
url = {https://bouras.upatras.gr/ijoainas2024_bouras/},
year = {2024},
date = {2024-12-01},
urldate = {2024-12-01},
journal = {International Journal on Advances in Networks and Services (to appear)},
volume = {17},
number = {3&4},
abstract = {Meeting the escalating demands for data traffic in fifthgeneration networks and beyond requires efficient solutions like Heterogeneous Networks, which enhance spectral and energy efficiency by eploying small cells close to users. Traditional Downlink and Uplink Coupling often limits uplink efficiency due to power imbalances across base stations. Downlink and Uplink Decoupling addresses this by allowing separate access points for uplink and downlink, optimizing user association and energy use. This research expands upon previous conference work by introducing a new scenario that evaluates Downlink and Uplink Decoupling’s performance at a 25 decibel milliwatts user equipment power setting, along with an additional experiment for 1500 user devices in the 20 and 30 decibel milliwatts scenarios. The
extended analysis offers deeper insights into the energy efficiency and resource allocation of Downlink and Uplink Decoupling under various network conditions, confirming its suitability for scalable,
efficient fifth-generation networks},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Meeting the escalating demands for data traffic in fifthgeneration networks and beyond requires efficient solutions like Heterogeneous Networks, which enhance spectral and energy efficiency by eploying small cells close to users. Traditional Downlink and Uplink Coupling often limits uplink efficiency due to power imbalances across base stations. Downlink and Uplink Decoupling addresses this by allowing separate access points for uplink and downlink, optimizing user association and energy use. This research expands upon previous conference work by introducing a new scenario that evaluates Downlink and Uplink Decoupling’s performance at a 25 decibel milliwatts user equipment power setting, along with an additional experiment for 1500 user devices in the 20 and 30 decibel milliwatts scenarios. The
extended analysis offers deeper insights into the energy efficiency and resource allocation of Downlink and Uplink Decoupling under various network conditions, confirming its suitability for scalable,
efficient fifth-generation networks
extended analysis offers deeper insights into the energy efficiency and resource allocation of Downlink and Uplink Decoupling under various network conditions, confirming its suitability for scalable,
efficient fifth-generation networks
Conferences
Tsachrelias, Konstantinos; Katsigiannis, Chrysostomos-Athanasios; Kokkinos, Vasileios; Gkamas, Apostolos; Bouras, Christos; Pouyioutas, Philippos
Game Theoretic Reinforcement Learning for Mobility - Aware Resource Allocation in 5G MIMO Conference
The 20th International Conference on Broadband and Wireless Computing, Communication and Applications (BWCCA - 2025) , Sharjan, United Arab Emirates, pp. 1-13, 2025.
Abstract | Links | BibTeX | Tags:
@conference{nokeyq,
title = {Game Theoretic Reinforcement Learning for Mobility - Aware Resource Allocation in 5G MIMO},
author = {Konstantinos Tsachrelias and Chrysostomos-Athanasios Katsigiannis and Vasileios Kokkinos and Apostolos Gkamas and Christos Bouras and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/advances-on-broad-band-and-wireless1-computing-communication-and-applications-2/},
year = {2025},
date = {2025-11-12},
urldate = {2025-11-12},
booktitle = {The 20th International Conference on Broadband and Wireless Computing, Communication and Applications (BWCCA - 2025) , Sharjan, United Arab
Emirates, pp. 1-13},
pages = {1 - 13},
abstract = {Next-generation 5G networks with massive Multiple Input Multiple Output (MIMO) must efficiently allocate radio resources to mobile users whose channel conditions change rapidly due to movement. This paper proposes a novel game-theory Reinforcement Learning (RL) framework for mobility-aware resource allocation in 5G MIMO systems. We model the resource allocation problem as a dynamic game between network entities and integrate a predictive deep RL agent that anticipates User Equipment (UE) mobility patterns. By forecasting UE movement, the RL agent proactively assists a game-theory optimization of MIMO resource allocation before channel quality degrades. The combination of game theory with predictive RL enables the network to reach a near-equilibrium resource distribution that is both adaptive and fair, improving convergence stability compared to standalone learning or game approaches. Simulation results in a high-mobility 5G scenario demonstrate that the proposed approach significantly boosts user Quality of Service (QoS) for example, increasing average throughput and reducing latency and handover failures relative to conventional reactive allocation strategies. Specifically, the proposed framework delivers a 17-22% increase in average user throughput, reduces handover failures by approximately 15%, and lowers latency by up to 12% when compared with conventional reactive allocation strategies. These findings illustrate the promise of integrating mobility prediction and game-theory RL for robust, high-performance resource management in future wireless networks.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Next-generation 5G networks with massive Multiple Input Multiple Output (MIMO) must efficiently allocate radio resources to mobile users whose channel conditions change rapidly due to movement. This paper proposes a novel game-theory Reinforcement Learning (RL) framework for mobility-aware resource allocation in 5G MIMO systems. We model the resource allocation problem as a dynamic game between network entities and integrate a predictive deep RL agent that anticipates User Equipment (UE) mobility patterns. By forecasting UE movement, the RL agent proactively assists a game-theory optimization of MIMO resource allocation before channel quality degrades. The combination of game theory with predictive RL enables the network to reach a near-equilibrium resource distribution that is both adaptive and fair, improving convergence stability compared to standalone learning or game approaches. Simulation results in a high-mobility 5G scenario demonstrate that the proposed approach significantly boosts user Quality of Service (QoS) for example, increasing average throughput and reducing latency and handover failures relative to conventional reactive allocation strategies. Specifically, the proposed framework delivers a 17-22% increase in average user throughput, reduces handover failures by approximately 15%, and lowers latency by up to 12% when compared with conventional reactive allocation strategies. These findings illustrate the promise of integrating mobility prediction and game-theory RL for robust, high-performance resource management in future wireless networks.
Tsachrelias, Konstantinos; Katsigiannis, Chrysostomos-Athanasios; Kokkinos, Vasileios; Gkamas, Apostolos; Bouras, Christos; Pouyioutas, Philippos
Robust Protection of 5G MIMO Networks from Jamming Attacks via Adaptive Beamforming Conference
20th International Conference on Future Networks and Communications (FNC 2025), August 4 - 6, 2025, Leuven, Belgium, 2025.
Abstract | Links | BibTeX | Tags:
@conference{nokeyg,
title = {Robust Protection of 5G MIMO Networks from Jamming Attacks via Adaptive Beamforming},
author = {Konstantinos Tsachrelias and Chrysostomos-Athanasios Katsigiannis and Vasileios Kokkinos and Apostolos Gkamas and Christos Bouras and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/fnc2025_bouras-2/},
year = {2025},
date = {2025-08-04},
urldate = {2025-08-04},
booktitle = {20th International Conference on Future Networks and Communications (FNC 2025), August 4 - 6, 2025, Leuven, Belgium},
pages = {65 - 72},
abstract = {Ensuring reliable and secure communication in 5G networks is critical, especially against jamming attacks that can significantly impair network performance. This paper presents a method to enhance the resilience of 5G Multiple Input Multiple Output (MIMO) networks through adaptive beamforming, specifically targeting jamming mitigation. The approach involves dynamically adjusting signal transmission direction to differentiate between legitimate communication and interference. Simulation results demonstrate that adaptive beamforming effectively reduces the impact of jamming, maintaining service quality even under adverse conditions. This method provides a practical and scalable solution for improving the security of 5G networks, addressing a key challenge in wireless communication systems.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Ensuring reliable and secure communication in 5G networks is critical, especially against jamming attacks that can significantly impair network performance. This paper presents a method to enhance the resilience of 5G Multiple Input Multiple Output (MIMO) networks through adaptive beamforming, specifically targeting jamming mitigation. The approach involves dynamically adjusting signal transmission direction to differentiate between legitimate communication and interference. Simulation results demonstrate that adaptive beamforming effectively reduces the impact of jamming, maintaining service quality even under adverse conditions. This method provides a practical and scalable solution for improving the security of 5G networks, addressing a key challenge in wireless communication systems.
Katsigiannis, Chrysostomos-Athanasios; Tsachrelias, Konstantinos; Kokkinos, Vasileios; Gkamas, Apostolos; Bouras, Christos; Pouyioutas, Philippos
Evaluating Security Techniques in 5G MIMO - Based IoT Networks Conference
The 16th International Conference on Ubiquitous Networks (ICUFN2025), Lisbon, Portugal, 2025.
Abstract | Links | BibTeX | Tags:
@conference{nokeyh,
title = {Evaluating Security Techniques in 5G MIMO - Based IoT Networks},
author = {Chrysostomos-Athanasios Katsigiannis and Konstantinos Tsachrelias and Vasileios Kokkinos and Apostolos Gkamas and Christos Bouras and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/icufn-2025b/},
year = {2025},
date = {2025-07-11},
urldate = {2025-07-11},
booktitle = {The 16th International Conference on Ubiquitous Networks (ICUFN2025)},
address = {Lisbon, Portugal},
abstract = {The rapid expansion of Internet of Things (IoT) devices in various sectors, from healthcare to industrial automation, has heightened the need for secure and efficient communication networks. Multiple Input Multiple Output (MIMO) systems, integral to 5G networks, offer high throughput and low latency essential for real-time IoT applications. However, the integration of robust security mechanisms into MIMO systems often leads to increased latency, potentially undermining the performance of timesensitive IoT applications. This paper proposes a framework for enhancing the security of MIMO networks specifically designed for IoT environments while maintaining ultra-low latency. The study explores lightweight encryption techniques, physical layer security methods, and optimized beamforming strategies that collectively safeguard data integrity and confidentiality without compromising network performance. Through theoretical analysis and extensive simulations, this research demonstrates
that it is possible to achieve a secure MIMO-based IoT network that balances both latency and security requirements.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
The rapid expansion of Internet of Things (IoT) devices in various sectors, from healthcare to industrial automation, has heightened the need for secure and efficient communication networks. Multiple Input Multiple Output (MIMO) systems, integral to 5G networks, offer high throughput and low latency essential for real-time IoT applications. However, the integration of robust security mechanisms into MIMO systems often leads to increased latency, potentially undermining the performance of timesensitive IoT applications. This paper proposes a framework for enhancing the security of MIMO networks specifically designed for IoT environments while maintaining ultra-low latency. The study explores lightweight encryption techniques, physical layer security methods, and optimized beamforming strategies that collectively safeguard data integrity and confidentiality without compromising network performance. Through theoretical analysis and extensive simulations, this research demonstrates
that it is possible to achieve a secure MIMO-based IoT network that balances both latency and security requirements.
that it is possible to achieve a secure MIMO-based IoT network that balances both latency and security requirements.
Tsachrelias, Konstantinos; Katsigiannis, Chrysostomos-Athanasios; Kokkinos, Vasileios; Gkamas, Apostolos; Bouras, Christos; Pouyioutas, Philippos
Enhancing Spectral Efficiency in 5G MIMO Networks Through Adaprive Beamforming Techniques Conference
The 7th International Conference on Advaced Communication Technologies and Networking (CommNet’24), Rabat, Morocco, no. 1- 7, 2024.
Abstract | Links | BibTeX | Tags:
@conference{nokeygb,
title = {Enhancing Spectral Efficiency in 5G MIMO Networks Through Adaprive Beamforming Techniques},
author = {Konstantinos Tsachrelias and Chrysostomos-Athanasios Katsigiannis and Vasileios Kokkinos and Apostolos Gkamas and Christos Bouras and Philippos Pouyioutas},
url = {https://bouras.upatras.gr/enhancing_spectral_efficiency_in_5g_mimo_networks_through_adaptive_beamforming_techniques/},
year = {2024},
date = {2024-12-04},
urldate = {2024-12-04},
booktitle = {The 7th International Conference on Advaced Communication Technologies and Networking (CommNet’24), Rabat, Morocco},
number = {1- 7},
abstract = {The evolution of 5G networks is driving advancements in data rates, latency reduction, and connectivity, with adaptive beamforming emerging as a core technology to enhance spectral efficiency. This study demonstrates how integrating beamforming with spatial filtering can effectively optimize signal quality in 5G MIMO networks. Through simulations, we show that our approach achieves significant
improvements in Signal-to-Noise Ratio (SNR) by optimizing beam directions. Specifically, results indicate that optimal beamforming angles can yield SNR values as high as 78 dB, substantially utperforming lower SNRs observed at less favorable angles. These findings underscore the potential of combined beamforming and spatial filtering to enhance communication reliability and network performance,
particularly in high-density settings},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
The evolution of 5G networks is driving advancements in data rates, latency reduction, and connectivity, with adaptive beamforming emerging as a core technology to enhance spectral efficiency. This study demonstrates how integrating beamforming with spatial filtering can effectively optimize signal quality in 5G MIMO networks. Through simulations, we show that our approach achieves significant
improvements in Signal-to-Noise Ratio (SNR) by optimizing beam directions. Specifically, results indicate that optimal beamforming angles can yield SNR values as high as 78 dB, substantially utperforming lower SNRs observed at less favorable angles. These findings underscore the potential of combined beamforming and spatial filtering to enhance communication reliability and network performance,
particularly in high-density settings
improvements in Signal-to-Noise Ratio (SNR) by optimizing beam directions. Specifically, results indicate that optimal beamforming angles can yield SNR values as high as 78 dB, substantially utperforming lower SNRs observed at less favorable angles. These findings underscore the potential of combined beamforming and spatial filtering to enhance communication reliability and network performance,
particularly in high-density settings
Tsachrelias, Konstantinos; Katsigiannis, Chrysostomos-Athanasios; Kokkinos, Vasileios; Gkamas, Apostolos; Bouras, Christos; Pouyioutas, Philippos
Efficient User Equipment Distribution in DUDe 5G Network using Linear Assignment Algorithms Conference
16th Internaional Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT 2024), November 26 – 28, 2024, Grand Canaria Spain, pp. 1-6, 2024.
Abstract | Links | BibTeX | Tags:
@conference{nokeyj,
title = {Efficient User Equipment Distribution in DUDe 5G Network using Linear Assignment Algorithms},
author = {Konstantinos Tsachrelias and Chrysostomos-Athanasios Katsigiannis and Vasileios Kokkinos and Apostolos Gkamas and Christos Bouras and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/icumt-2024/},
year = {2024},
date = {2024-11-26},
urldate = {2024-11-26},
booktitle = {16th Internaional Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT 2024), November 26 – 28, 2024, Grand Canaria Spain, pp. 1-6},
pages = {1 - 6},
abstract = {In the context of 5G networks, efficient resource allocation plays a crucial role in meeting the diverse and demanding requirements of modern applications. This paper presents a novel approach for optimizing User Equipment (UE) distribution in Downlink/Uplink Decoupling (DUDe) 5G networks through the application of Linear Assignment Algorithms (LAAs). The proposed multi-objective framework intelligently allocates UEs to DUDe Base Stations, aiming to maximize network performance, achieve load balancing, enhance Signal-to-Noise Ratio (SNR), and optimize energy efficiency. The findings hold significant implications for network operators, facilitating the advancement of 5G infrastructures to meet the ever-increasing demand for seamless and high-quality connectivity.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
In the context of 5G networks, efficient resource allocation plays a crucial role in meeting the diverse and demanding requirements of modern applications. This paper presents a novel approach for optimizing User Equipment (UE) distribution in Downlink/Uplink Decoupling (DUDe) 5G networks through the application of Linear Assignment Algorithms (LAAs). The proposed multi-objective framework intelligently allocates UEs to DUDe Base Stations, aiming to maximize network performance, achieve load balancing, enhance Signal-to-Noise Ratio (SNR), and optimize energy efficiency. The findings hold significant implications for network operators, facilitating the advancement of 5G infrastructures to meet the ever-increasing demand for seamless and high-quality connectivity.
Katsigiannis, Chrysostomos-Athanasios; Tsachrelias, Konstantinos; Kokkinos, Vasileios; Gkamas, Apostolos; Bouras, Christos; Pouyioutas, Philippos
Enhancing Real – Time IoT Applications: Latency Reduction Techniques in 5G MIMO Networks Conference
The 19th International Conference on Broadband and Wireless Computing, Communication and Applications Communication and Applications (BWCCA 2024), November 13 – 15, 2024, San Benedetto del Tronto, Italy, vol. -, 2024.
Abstract | Links | BibTeX | Tags:
@conference{nokeyi,
title = {Enhancing Real – Time IoT Applications: Latency Reduction Techniques in 5G MIMO Networks},
author = {Chrysostomos-Athanasios Katsigiannis and Konstantinos Tsachrelias and Vasileios Kokkinos and Apostolos Gkamas and Christos Bouras and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/bwcca-2024/},
year = {2024},
date = {2024-11-03},
urldate = {2024-11-03},
booktitle = {The 19th International Conference on Broadband and Wireless Computing, Communication and Applications Communication and Applications (BWCCA 2024), November 13 – 15, 2024, San Benedetto del Tronto, Italy},
volume = {-},
pages = {1 - 6},
abstract = {In the ever-growing field of 5G technology, Massive Multiple Input Multiple Output (MIMO) systems hold the promise of substantial improvements in net-work capacity and efficiency. However, the demand for low latency, imposed by real-time Internet of Things (IoT) applications presents some significant obsta-cles. This study delves into novel approaches to reducing latency within 5G MIMO setups, focusing particularly on the integration of shortened Transmission Time Intervals (TTIs) and preemptive scheduling tactics. Through simulations in-volving a small-scale MIMO configuration servicing multiple IoT devices, this study thoroughly evaluates the effects of these methods on transmission latency. The desired result is to demonstrate that the adoption of reduced TTIs notably mitigates overall latency, thereby augmenting the efficacy of time-sensitive IoT tasks such as industrial automation and healthcare monitoring systems. This re-search not only contributes to the theoretical progression of 5G communications but also furnishes practical insights for network operators and system designers trying to fine-tune 5G networks for evolving IoT environments. The simulation results indicate that the proposed techniques significantly reduce latency by ap-proximately 30% compared to standard configurations, particularly benefiting high-priority IoT applications. These findings highlight the effectiveness of shortened TTIs and preemptive scheduling in enhancing the performance of real-time IoT tasks within 5G MIMO networks.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
In the ever-growing field of 5G technology, Massive Multiple Input Multiple Output (MIMO) systems hold the promise of substantial improvements in net-work capacity and efficiency. However, the demand for low latency, imposed by real-time Internet of Things (IoT) applications presents some significant obsta-cles. This study delves into novel approaches to reducing latency within 5G MIMO setups, focusing particularly on the integration of shortened Transmission Time Intervals (TTIs) and preemptive scheduling tactics. Through simulations in-volving a small-scale MIMO configuration servicing multiple IoT devices, this study thoroughly evaluates the effects of these methods on transmission latency. The desired result is to demonstrate that the adoption of reduced TTIs notably mitigates overall latency, thereby augmenting the efficacy of time-sensitive IoT tasks such as industrial automation and healthcare monitoring systems. This re-search not only contributes to the theoretical progression of 5G communications but also furnishes practical insights for network operators and system designers trying to fine-tune 5G networks for evolving IoT environments. The simulation results indicate that the proposed techniques significantly reduce latency by ap-proximately 30% compared to standard configurations, particularly benefiting high-priority IoT applications. These findings highlight the effectiveness of shortened TTIs and preemptive scheduling in enhancing the performance of real-time IoT tasks within 5G MIMO networks.
Katsigiannis, Chrysostomos-Athanasios; Tsachrelias, Konstantinos; Kokkinos, Vasileios; Bouras, Christos; Gkamas, Apostolos; Pouyioutas, Philippos
Energy Efficiency Analysis of DUDe 5G Networks Conference
The 15th International Conference on Ubiquitous and Future Networks (ICUFN 2024), Jyly 2 – 5, 2024, Budapest, Hungary, 2024.
Abstract | Links | BibTeX | Tags:
@conference{4664,
title = {Energy Efficiency Analysis of DUDe 5G Networks},
author = {Chrysostomos-Athanasios Katsigiannis and Konstantinos Tsachrelias and Vasileios Kokkinos and Christos Bouras and Apostolos Gkamas and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/wp-content/uploads/2024/06/icufn2024_submitted.pdf},
year = {2024},
date = {2024-01-01},
urldate = {2024-01-01},
booktitle = {The 15th International Conference on Ubiquitous and Future Networks (ICUFN 2024), Jyly 2 – 5, 2024, Budapest, Hungary},
abstract = {In this paper we evaluate the energy efficiency of Downlink/Uplink Decoupling (DUDe) systems by considering the energy consumption of each Base Station (BS) and the communication overhead between the BSs and User Equipment (UE). Through extensive simulations, the energy efficiency of DUDe systems is evaluated under various scenarios, such as different UE densities, Base Stations (BSs) configurations, and traffic patterns. The simulation results indicate that the proposed DUDe system can achieve significant energy savings compared to traditional centralized 5G systems. The impact of various parameters on energy efficiency is also analyzed, providing guidelines for designing energy-efficient DUDe systems. The paper emphasizes the significance of energy-efficient design in 5G networks, as it can significantly reduce the operational costs and carbon footprint of the network.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
In this paper we evaluate the energy efficiency of Downlink/Uplink Decoupling (DUDe) systems by considering the energy consumption of each Base Station (BS) and the communication overhead between the BSs and User Equipment (UE). Through extensive simulations, the energy efficiency of DUDe systems is evaluated under various scenarios, such as different UE densities, Base Stations (BSs) configurations, and traffic patterns. The simulation results indicate that the proposed DUDe system can achieve significant energy savings compared to traditional centralized 5G systems. The impact of various parameters on energy efficiency is also analyzed, providing guidelines for designing energy-efficient DUDe systems. The paper emphasizes the significance of energy-efficient design in 5G networks, as it can significantly reduce the operational costs and carbon footprint of the network.
Tsachrelias, Konstantinos; Katsigiannis, Chrysostomos-Athanasios; Kokkinos, Vasileios; Gkamas, Apostolos; Bouras, Christos; Pouyioutas, Philippos
Optimizing Resource Allocation in 5G MIMO Networks Using DUDe Techniques Conference
14th IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing (CNDSP 2024), July 17 – 19, 2024, Rome Italy, 2024.
Abstract | Links | BibTeX | Tags:
@conference{4663b,
title = {Optimizing Resource Allocation in 5G MIMO Networks Using DUDe Techniques},
author = {Konstantinos Tsachrelias and Chrysostomos-Athanasios Katsigiannis and Vasileios Kokkinos and Apostolos Gkamas and Christos Bouras and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/csndsp-2024/},
year = {2024},
date = {2024-01-01},
urldate = {2024-01-01},
booktitle = {14th IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing (CNDSP 2024), July 17 – 19, 2024, Rome Italy},
pages = {454 - 459},
abstract = {In the landscape of 5G networks, efficient resource allocation stands as a critical factor in meeting the diverse demands of applications and users. This paper delves into optimizing resource allocation within 5G Multiple Input Multiple Output (MIMO) networks by leveraging Downlink/Uplink Decoupling (DUDe) techniques. MIMO technology, enabling the simultaneous transmission of multiple data streams, holds promise for boosting spectral efficiency. However, accommodating the dynamic and diverse user requirements poses a significant challenge in resource allocation. By employing advanced DUDe techniques, this research aims to dynamically allocate resources in 5G MIMO networks, seeking to enhance throughput, minimize latency, and optimize user satisfaction. Through simulation-based analysis, this paper highlights the efficacy of the proposed approach in significantly improving network performance and resource utilization.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
In the landscape of 5G networks, efficient resource allocation stands as a critical factor in meeting the diverse demands of applications and users. This paper delves into optimizing resource allocation within 5G Multiple Input Multiple Output (MIMO) networks by leveraging Downlink/Uplink Decoupling (DUDe) techniques. MIMO technology, enabling the simultaneous transmission of multiple data streams, holds promise for boosting spectral efficiency. However, accommodating the dynamic and diverse user requirements poses a significant challenge in resource allocation. By employing advanced DUDe techniques, this research aims to dynamically allocate resources in 5G MIMO networks, seeking to enhance throughput, minimize latency, and optimize user satisfaction. Through simulation-based analysis, this paper highlights the efficacy of the proposed approach in significantly improving network performance and resource utilization.
Katsigiannis, Chrysostomos-Athanasios; Gkamas, Apostolos; Tsachrelias, Konstantinos; Bouras, Christos; Kokkinos, Vasileios; Pouyioutas, Philippos
Simulation Based Energy Efficiency Analysis of DUDe 5G Networks Conference
The Twentieth Advanced International Conference on Telecommunications (AICT 2024), April 14 – 18, 2024, Venice, Italy, 2024.
Abstract | Links | BibTeX | Tags:
@conference{4661,
title = {Simulation Based Energy Efficiency Analysis of DUDe 5G Networks},
author = {Chrysostomos-Athanasios Katsigiannis and Apostolos Gkamas and Konstantinos Tsachrelias and Christos Bouras and Vasileios Kokkinos and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/wp-content/uploads/2024/06/AICT2024_Camera_Ready-00000002.pdf},
year = {2024},
date = {2024-01-01},
urldate = {2024-01-01},
booktitle = {The Twentieth Advanced International Conference on Telecommunications (AICT 2024), April 14 – 18, 2024, Venice, Italy},
pages = {1 - 6},
abstract = {To be able to respond to the explosively increased data traffic demand of 5G and beyond networks (Internet of Things (IoT) , Voice/Video calls, Peer2Peer (P2P) software, etc.), one of the most promising technologies are densified Heterogeneous Networks (HetNets). In HetNets, base stations are brought closer to users with the placement of small base stations, which results in better spectral and energy efficiency for cellular systems. However, the HetNet topology challenges traditional cellular systems. One of the most important challenges is user association. Aiming to avoid the drawback caused by Downlink/Uplink Coupling (DUCo) access in HetNets user association, a Downlink/Uplink Decoupling DUDe Access approach has emerged. By allowing access points in the uplink and downlink association to be different, DUDe greatly improves the uplink performance of HetNets. In this paper, we evaluate energy efficiency and resource allocation of DUDe approach.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
To be able to respond to the explosively increased data traffic demand of 5G and beyond networks (Internet of Things (IoT) , Voice/Video calls, Peer2Peer (P2P) software, etc.), one of the most promising technologies are densified Heterogeneous Networks (HetNets). In HetNets, base stations are brought closer to users with the placement of small base stations, which results in better spectral and energy efficiency for cellular systems. However, the HetNet topology challenges traditional cellular systems. One of the most important challenges is user association. Aiming to avoid the drawback caused by Downlink/Uplink Coupling (DUCo) access in HetNets user association, a Downlink/Uplink Decoupling DUDe Access approach has emerged. By allowing access points in the uplink and downlink association to be different, DUDe greatly improves the uplink performance of HetNets. In this paper, we evaluate energy efficiency and resource allocation of DUDe approach.
Katsigiannis, Chrysostomos-Athanasios; Gkamas, Apostolos; Tsachrelias, Konstantinos; Bouras, Christos; Kokkinos, Vasileios; Pouyioutas, Philippos
Power Consumption Analysis in DUDe 5G MIMO Networks Conference
15th International Conference on Network of the Future (NoF 2024), October 2 – 4, 2024, Barcelona, Spain, 2024.
Abstract | Links | BibTeX | Tags:
@conference{4674,
title = {Power Consumption Analysis in DUDe 5G MIMO Networks},
author = {Chrysostomos-Athanasios Katsigiannis and Apostolos Gkamas and Konstantinos Tsachrelias and Christos Bouras and Vasileios Kokkinos and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/1571017724nof2024-2/},
year = {2024},
date = {2024-01-01},
urldate = {2024-01-01},
booktitle = {15th International Conference on Network of the Future (NoF 2024), October 2 – 4, 2024, Barcelona, Spain},
abstract = {The advent of 5G technology has brought unprecedented advancements in wireless communication, promising higher data rates and improved user experiences. However, the implementation of Multiple-Input Multiple- Output (MIMO) techniques in 5G networks has significantly increased power consumption, posing a challenge to sustainability and operational costs. This study conducts a comparative analysis of energy efficiency in 5G MIMO networks, specifically between Downlink Uplink Coupling (DUCo) and Downlink Uplink Decoupling (DUDe) techniques. By examining the remaining power in the Base Stations (BSs) of the implemented Heterogeneous Network (HetNet), this analysis evaluates the potential of DUDe over DUCo in managing power consumption. The findings of this study aim to assist network operators, researchers, and policymakers in developing greener and more sustainable 5G infrastructures for a cleaner, energyefficient future.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
The advent of 5G technology has brought unprecedented advancements in wireless communication, promising higher data rates and improved user experiences. However, the implementation of Multiple-Input Multiple- Output (MIMO) techniques in 5G networks has significantly increased power consumption, posing a challenge to sustainability and operational costs. This study conducts a comparative analysis of energy efficiency in 5G MIMO networks, specifically between Downlink Uplink Coupling (DUCo) and Downlink Uplink Decoupling (DUDe) techniques. By examining the remaining power in the Base Stations (BSs) of the implemented Heterogeneous Network (HetNet), this analysis evaluates the potential of DUDe over DUCo in managing power consumption. The findings of this study aim to assist network operators, researchers, and policymakers in developing greener and more sustainable 5G infrastructures for a cleaner, energyefficient future.
Tsachrelias, Konstantinos; Katsigiannis, Chrysostomos; Kokkinos, Vasileios; Gkamas, Apostolos; Bouras, Christos; Pouyioutas, Philippos
Bandwidth Optimization Techniques in Heterogeneous 5G Networks Using DUDe Conference
The 6th International Conference on Advanced Communication Technologies and Networking (CommNet 2023), December 11 – 13, 2023, Rabat, Morocco, pp. 1-6, 2023.
Abstract | Links | BibTeX | Tags:
@conference{4659,
title = {Bandwidth Optimization Techniques in Heterogeneous 5G Networks Using DUDe},
author = {Konstantinos Tsachrelias and Chrysostomos Katsigiannis and Vasileios Kokkinos and Apostolos Gkamas and Christos Bouras and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/wp-content/uploads/2024/06/CommNet23_1.pdf},
year = {2023},
date = {2023-01-01},
urldate = {2023-01-01},
booktitle = {The 6th International Conference on Advanced Communication Technologies and Networking (CommNet 2023), December 11 – 13, 2023, Rabat, Morocco, pp. 1-6},
pages = {1 - 6},
abstract = {The deployment of 5G networks has led to a significant increase in demand for high-speed data rates and improved overall network performance. HetNets are a promising solution for providing coverage and capacity
enhancements for 5G networks. However, one of the key challenges in HetNets is the optimization of bandwidth allocation. Traditional resource allocation techniques are limited in their ability to provide efficient and effective solutions for 5G networks. To address this challenge, a novel technology called DUDe (Downlink/Uplink Decoupling) has been proposed. DUDe optimizes bandwidth allocation in HetNets by dynamically adjusting the allocation of network resources to user demand and network conditions. The motivation of this paper is to highlight the importance of DUDe technology in macro cell offloading in 5G HetNets. The paper evaluates the
performance of DUDe in comparison to traditional resource allocation techniques and provides insights into the key factors that influence its effectiveness. Moreover, this paper presents a detailed analysis of simulations results and provides recommendations for future research. The findings of this study will be useful for network operators and researchers in developing more efficient and effective resource allocation strategies for 5G networks.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
The deployment of 5G networks has led to a significant increase in demand for high-speed data rates and improved overall network performance. HetNets are a promising solution for providing coverage and capacity
enhancements for 5G networks. However, one of the key challenges in HetNets is the optimization of bandwidth allocation. Traditional resource allocation techniques are limited in their ability to provide efficient and effective solutions for 5G networks. To address this challenge, a novel technology called DUDe (Downlink/Uplink Decoupling) has been proposed. DUDe optimizes bandwidth allocation in HetNets by dynamically adjusting the allocation of network resources to user demand and network conditions. The motivation of this paper is to highlight the importance of DUDe technology in macro cell offloading in 5G HetNets. The paper evaluates the
performance of DUDe in comparison to traditional resource allocation techniques and provides insights into the key factors that influence its effectiveness. Moreover, this paper presents a detailed analysis of simulations results and provides recommendations for future research. The findings of this study will be useful for network operators and researchers in developing more efficient and effective resource allocation strategies for 5G networks.
enhancements for 5G networks. However, one of the key challenges in HetNets is the optimization of bandwidth allocation. Traditional resource allocation techniques are limited in their ability to provide efficient and effective solutions for 5G networks. To address this challenge, a novel technology called DUDe (Downlink/Uplink Decoupling) has been proposed. DUDe optimizes bandwidth allocation in HetNets by dynamically adjusting the allocation of network resources to user demand and network conditions. The motivation of this paper is to highlight the importance of DUDe technology in macro cell offloading in 5G HetNets. The paper evaluates the
performance of DUDe in comparison to traditional resource allocation techniques and provides insights into the key factors that influence its effectiveness. Moreover, this paper presents a detailed analysis of simulations results and provides recommendations for future research. The findings of this study will be useful for network operators and researchers in developing more efficient and effective resource allocation strategies for 5G networks.
Tsachrelias, Konstantinos; Gkamas, Apostolos; Katsigiannis, Chrysostomos-Athanasios; Bouras, Christos; Kokkinos, Vasileios; Pouyioutas, Philippos
On the Optimization of User Allocation in Heterogeneous 5G Networks Using DUDe Techniques Conference
The 14th International Conference on Ubiquitous and Future Networks (ICUFN 2023), July 4 – 7, 2023, Paris France, pp. 521-526, 2023.
Abstract | Links | BibTeX | Tags:
@conference{4652,
title = {On the Optimization of User Allocation in Heterogeneous 5G Networks Using DUDe Techniques},
author = {Konstantinos Tsachrelias and Apostolos Gkamas and Chrysostomos-Athanasios Katsigiannis and Christos Bouras and Vasileios Kokkinos and Philippos Pouyioutas},
url = {https://telematics.upatras.gr/wp-content/uploads/2024/06/ICUFN2023_Bouras.pdf},
year = {2023},
date = {2023-01-01},
urldate = {2023-01-01},
booktitle = {The 14th International Conference on Ubiquitous and Future Networks (ICUFN 2023), July 4 – 7, 2023, Paris France, pp. 521-526},
pages = {521 – 526},
abstract = {In previous years, 3G and 4G cellular homogeneous networks configured with macro Base Stations (BSs) relied only on the downlink signal, even though transmission power and interference levels differ significantly between uplink and downlink. In 5G Heterogeneous Networks (HetNet), a new generation which have multiple BSs of different types such as Femto BS and Macro BS, there is the possibility of choosing to receive the data from one BS and transmit them to a different BS, and therefore decoupling the uplink and downlink. Especially, the increasing demand for faster, more reliable, and efficient connectivity has made the optimization of User Equipment (UE) allocation in 5G networks a crucial task. To tackle the challenges posed by heterogeneous 5G networks, this study compares and evaluates the performance of Downlink/Uplink Decoupling (DUDe) and traditional Downlink/Uplink Coupled (DUCo) user allocation approaches. Simulation results show that DUDe UE allocation outperforms DUCo by providing improved network performance and more efficient utilization of network resources in diverse network conditions. These findings have important implications for the design and optimization of 5G networks and provide valuable insights for researchers and practitioners in the field.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
In previous years, 3G and 4G cellular homogeneous networks configured with macro Base Stations (BSs) relied only on the downlink signal, even though transmission power and interference levels differ significantly between uplink and downlink. In 5G Heterogeneous Networks (HetNet), a new generation which have multiple BSs of different types such as Femto BS and Macro BS, there is the possibility of choosing to receive the data from one BS and transmit them to a different BS, and therefore decoupling the uplink and downlink. Especially, the increasing demand for faster, more reliable, and efficient connectivity has made the optimization of User Equipment (UE) allocation in 5G networks a crucial task. To tackle the challenges posed by heterogeneous 5G networks, this study compares and evaluates the performance of Downlink/Uplink Decoupling (DUDe) and traditional Downlink/Uplink Coupled (DUCo) user allocation approaches. Simulation results show that DUDe UE allocation outperforms DUCo by providing improved network performance and more efficient utilization of network resources in diverse network conditions. These findings have important implications for the design and optimization of 5G networks and provide valuable insights for researchers and practitioners in the field.