Integrated Network Control Architecture for Terrestrial and Non-Terrestrial Network Convergence In Beyond 5G Systems

Kafle, Ved P.; Sekiguchi, Mariko; Asaeda, Hitoshi; Harai, Hiroaki

doi:10.23919/ituk56368.2022.10003041

Cited by 8 publications

(2 citation statements)

References 5 publications

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“…In [8], Zhu et al presented a comprehensive survey of various integrated satellite-terrestrial network architectures at multiple layers, ranging from the physical layer to the application layer. In [9], Kafle et al presented scenarios and architectures for integrated and individual network control systems that can accommodate various control functions for the design and orchestration of end-to-end network services, performance monitoring, and resource control of both TNs and NTNs. In addition, TN and NTN integrated network control architectures have recently been discussed in the ITU-T [10].…”

Section: Tn and Ntn Convergencementioning

confidence: 99%

Energy-Efficient Power Management for O-RAN Base Stations Utilizing Pedestrian Flow Analytics and Non-Terrestrial Networks

Miyazawa,

Ishizu,

Asaeda

et al. 2024

IEICE Trans. Commun.

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Recently, the open radio access network (O-RAN) architecture has been expected to enhance both the openness of network components and the intelligence of control functions as a promising RAN architecture for Beyond 5G (B5G)/6G networks. Meanwhile, the power consumption of base stations (BSs) in RAN is a serious problem that needs to be addressed owing to the recent increase in service types such as 4G-LTE, 5G, and local 5G, and it will be more remarkable in the future B5G era. However, a conventional RAN experiences energy wastage because it turns on the power of all BSs at all times, even in coverage areas that accommodate a small number of mobile terminals and low traffic. The O-RAN Alliance discusses the energy savings of BSs, but its standard specification lacks sufficient discussions on concrete models and protocols to realize highly energy-efficient power-on/off management of BSs. On the other hand, terrestrial network (TN) and non-terrestrial network (NTN) convergence has recently been considered in both academic research and standardization as an emerging technology for B5G networks. However, utilizing NTN capacities for BS power-on/off control of TN in the standard O-RAN architecture remains uninvestigated, although it has the potential to achieve higher energy efficiency. This study proposes a novel energyefficient power management architecture for O-RAN BSs. The proposed power management architecture extends the traditional standard O-RAN architecture such that the pedestrian flow analytics results and NTN capacities can be effectively utilized to obtain a higher energy-saving effect for O-RAN BSs. Consequently, the proposed power-on/off control reduces the power consumption of O-RAN BSs while maintaining the continuity of communications, bitrate, and other metrics. We performed numerical calculations using real datasets of pedestrian flows in regional mesh areas. As a result, we proved that the proposed architecture reduces power consumption by up to 40% when the NTN can accommodate UEs' traffic of approximately 400 Mbps. In addition, we implemented pedestrian flow analytics and power control functions in the controllers. We verified the feasibility of the functions by demonstrating the power-on/-off of an O-RAN BS using a mobile network testbed.

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Section: Tn and Ntn Convergencementioning

confidence: 99%

Energy-Efficient Power Management for O-RAN Base Stations Utilizing Pedestrian Flow Analytics and Non-Terrestrial Networks

Miyazawa,

Ishizu,

Asaeda

et al. 2024

IEICE Trans. Commun.

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“…Beyond 5G and 6G, next-generation wireless network technologies have attracted attention. Beyond 5G and 6G include the requirement of extending the communication area to the sea, sky, and space, which is different from a terrestrial network [2][3][4][5][6][7][8][9][10][11]. Communication networks that satisfy these requirements are called non-terrestrial networks (NTN) [12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Study on Drone Handover Methods Suitable for Multipath Interference Due to Obstacles

Hirata,

Hiraguri,

Kimura

et al. 2024

Drones

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Networks constructed in the sky are known as non-terrestrial networks (NTNs). As an example of an NTN, relay transmission using drones as radio stations enables flexible network construction in the air by performing handovers with ground stations. However, the presence of structures or obstacles in the flight path causes multipath interference; consequently, the propagation environment fluctuates significantly based on the flight. In such a communication environment, it is difficult for a drone to select an optimal ground station for a handover. Moreover, unlike a terrestrial network, the propagation environment of a flying drone is affected by structures and other factors that cause multipaths based on the flight speed and altitude, making the conditions of the propagation environment even more complex. To solve these problems, we propose handover schemes between drones and the ground that consider the multipath interference caused by obstacles. The proposed methods are used to perform handovers based on an optimal threshold of received power considering interference and avoid unnecessary handovers based on the moving speed, which makes the handover seamless. Finally, we develop a simulator that evaluates the cross layer from propagation to upper network protocols in a virtual space, including buildings, evaluate the communication quality of a drone flying in a three-dimensional space, and confirm the effectiveness of the proposed methods as well as the evaluation of the real environment.

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Orchestration and Control of Non-terrestrial Networks Employing Free Space Optics

Settembre,

Matera,

Sambo

et al. 2024

2024 Italian Conference on Optics and Photonics (ICOP)

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Integrated Network Control Architecture for Terrestrial and Non-Terrestrial Network Convergence In Beyond 5G Systems

Cited by 8 publications

References 5 publications

Energy-Efficient Power Management for O-RAN Base Stations Utilizing Pedestrian Flow Analytics and Non-Terrestrial Networks

Energy-Efficient Power Management for O-RAN Base Stations Utilizing Pedestrian Flow Analytics and Non-Terrestrial Networks

Study on Drone Handover Methods Suitable for Multipath Interference Due to Obstacles

Orchestration and Control of Non-terrestrial Networks Employing Free Space Optics

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