Mikko Majanen

Mikko Majanen
VTT Technical Research Centre of Finland Ltd

Senior Scientist

About

38
Publications
4,448
Reads
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255
Citations
Citations since 2017
8 Research Items
129 Citations
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20172018201920202021202220230510152025

Publications

Publications (38)
Article
Full-text available
This paper describes a licensed shared access (LSA) testbed and field trials using a live network. The testbed includes real 4G base stations and up-to 1000 virtual base stations, in the spectrum sharing scenario between satellite and cellular systems. The trials focus on 5G pioneer bands 3.4-3.8 GHz and 24.25-27.5 GHz where a satellite system is o...
Article
Full-text available
5G mobile network technology together with edge computing will create new opportunities for developing novel road safety services in order to better support connected and automated driving in challenging situations. This paper studies the feasibility and benefits of localized mobile network edge applications for supporting vehicles in diverse condi...
Conference Paper
Full-text available
Autonomous and remotely controlled ships operating in the Arctic area will need the connectivity that cannot be provided with the current systems. This study concentrates on investigating what kind of satellite communication system is needed for reliable operations in the defined area when the main application is a drone-assisted situational awaren...
Conference Paper
Full-text available
Development of a testbed for spectrum sharing is a multi-step process requiring systems engineering understanding. The ASCENT project is building a testbed to study licensed spectrum sharing between satellite systems and between satellite and terrestrial systems. The work has been carried out as part of the European Space Agency's (ESA) Advanced Re...
Article
Full-text available
Fifth generation (5G) technologies will boost the capacity and ease the management of mobile networks. Emerging virtualization and softwarization technologies enable more flexible customization of network services and facilitate cooperation between different actors. However, solutions are needed to enable users, operators, and service providers to...
Conference Paper
This paper presents a test case for coupling two physical aspects of an LED, optical and thermal, using specific simulation models coupled through an open source platform for distributed multi-physics modelling. The glue code for coupling is written with Python programming language including routines to interface specific simulation models. This ap...
Article
Full-text available
Due to the extensive growth of Internet of Things (IoT), the number of wireless devices connected to the Internet is forecasted to grow to 26 billion units installed in 2020. This will challenge both the energy efficiency of wireless battery powered devices and the bandwidth of wireless networks. One solution for both challenges could be to utilize...
Conference Paper
This article presents an overview of a secure multicast framework as well as a secure multicast system demonstrator used for end-to-end performance assessment of secure multicast service delivery over satellite. The security framework relies on IP security with multicast extensions and Group Domain of Interpretation (GDOI) multicast key management....
Article
The future Internet will be highly heterogeneous in supporting a multitude of access technologies and networks with overlapping coverages. Optimization of network operations like management of resources, mobility or Quality of Service in order to ensure smooth network operation and high user satisfaction will be very challenging in the future netwo...
Article
The paper explores delay-based congestion and flow control and the offloading of real-time traffic from wireless local area networks (WLANs) to mobile cellular networks (MCNs) in multihomed devices. The control system developed is based on an embedded hierarchical expert system. It adjusts transceivers’ traffic flow(s) for prevailing network condit...
Conference Paper
In this paper we explore delay based congestion and flow control and off-loading of real-time traffic from Wireless Local Area Networks (WLANs) to cellular networks in multi-homed devices. The developed controller is based on an embedded fuzzy expert system. It adjusts transceivers' traffic flow(s) for prevailing network conditions to achieve maxim...
Article
This chapter introduces an embedded expert system for flow control of delay sensitive real-time traffic in Wireless Local Area Networks (WLANs). The expert system is based on the fuzzy set theory. It adjusts tranceivers' traffic flow(s) for prevailing network conditions to achieve maximum throughput in required application dependent delay limits. I...
Article
Full-text available
In recent years energy-aware computing has become a major topic, not only in wireless and mobile devices but also in devices using wired technology. The ICT industry is consuming an increasing amount of energy and a large part of the consumption is generated by large-scale data centers. In High-Performance Computing (HPC) data centers, higher perfo...
Conference Paper
The modern mobile embedded devices support complex distributed applications via heterogeneous multi-core platforms. For the successful deployment of these applications, the scalability and performance analysis must be performed at all the layers of OSI model. This helps to identify the potential bottlenecks at different layers to perform the necess...
Article
This paper introduces an embedded control system for cognitive flow management of delay sensitive real-time traffic to improve quality of service (QoS) in Wireless Local Area Networks (WLANs). The management system is based on the fuzzy set theory. It adjusts transceivers' traffic flow(s) for prevailing network conditions to achieve application dep...
Conference Paper
Full-text available
This paper introduces control systems, which regulate tranceivers' packet sizes for prevailing network conditions to achieve maximum throughput and minimum delay for real-time traffic in Wireless Local Area Networks (WLANs). Delay and throughput are very much dependent on the packet size and the connection density. Therefore, the selected input par...
Article
1st International Conference on Energy-Efficient Computing and Networking, e-energy 2010, Passau, 13 - 15 Apr. 2010
Article
Full-text available
Eds. Pierson, JM.; Hlavacs, H. Proceedings of the COST Action IC804 on Energy Efficiency in Large Scale Distributed Systems, 1st Year, 88 - 92 Protecting the environment by saving energy and thus reducing carbon dioxide emissions is one of today’s hottest and most challenging topics and is of a rapidly growing importance in the computing domain. Th...
Conference Paper
We present a novel WiMAX simulation model called WISMU developed for the ns-2 network simulator. We shortly introduce its features and then study the performance of different kind of handover technologies in terms of throughput and network re-entry time. Our results show that by using association and HO optimizations via BS-to-BS signaling the netw...
Article
Many anticipate a future wireless world filled by a multitude of user devices and wireless technologies. Effective management of this kind of heterogeneous, mobile, and rapidly changing ad hoc networks will be a challenging task. We present and evaluate the Ambient Networks Gateway Selection Architecture (GSA), which provides support for gateway di...
Conference Paper
We study the performance of the gateway selection architecture (GSA), developed within the framework of the EU ambient networks integrated project, which provides support for gateway discovery, management, and selection for mobile nodes within dynamic routing groups. A routing group (RG) is a cluster of nodes in physical proximity, aware of the gro...
Chapter
This chapter addresses one of the challenges in cooperative networking, namely, mobility support in a heterogeneous ambient network environment. We motivate the need for efficient mechanisms for handling the large amount of network and channel state information required in assisting fast handovers and network and service adaptation strategies. Mana...
Conference Paper
Full-text available
The proliferation of the increasing number of devices and technologies has brought about the extension of the concept of roaming users to roaming networks. This has inspired many researchers to investigate optimal mechanisms to enable communications for such roaming networks. Within the European 6th Framework Ambient Networks Project, we identify s...
Article
At an early stage of information and communications technology and high-performance computing, performance and reliability were two important factors in research and development. It was highly essential that the hardware was able to function adequately, performing strategic operations. Energy consumption was not considered as a serious topic, since...

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