57 research outputs found
Mobility management in next generation wireless metropolitan area networks:Master's thesis
No full textThe next generation of wireless access technologies cannot succeed by providing either high data rates or full mobility support. Instead, it will be required to provide both broadband connectivity and support for full mobility. Worldwide Interoperability for Microwave Access (WiMAX) and High Speed Packet Access (HSPA) are two upcoming technologies, which can live up to these high expectations. In this master's thesis, WiMAX and HSPA are reviewed, paying special attention to mobility management issues and support for modern mixed multimedia traffic. In order to observe the real performance of currently available commercial equipment under such traffic conditions, measurement results from a WiMAX testbed are provided. These results show that even with rudimentary fixed WiMAX equipment, the effective capacity of the wireless link is substantially higher than that of the wireless access technologies currently dominating the markets. Wireless access technologies often need assistance from network layer protocols, in order to deliver full mobility support at the system level. In WiMAX, the Mobile Internet Protocol (MIP) is used for network layer mobility management. This master's thesis overviews different MIP variants, including the Mobile Internet Protocol Version 6 (MIPv6), which is reviewed in detail. The handover latencies of the MIPv6 are also studied using a testbed. The measurement results show that in order for the MIPv6 to handle network layer mobility management in a satisfactory manner, all the wireless networks involved in a handover must be carefully configured
Performance of LTE uplink for IoT backhaul
No full textThe number of devices connected to the Internet is growing substantially as a result of increased realization of the Internet of Things (IoT) concept. As cellular networks can already be perceived almost as ubiquitous, they can potentially provide IoT systems access to the Internet regardless of their location. However, increased use of commercial cellular networks to provide connectivity for IoT systems would also change the traffic mix of these networks. It has been measured earlier that a large number of small packets are challenging for different wireless access networks to provide high performance. Currently, small packets are transmitted, for example, with Voice over IP (VoIP) services. Many IoT applications, being based on constrained sensor devices and Machine-to-Machine (M2M) type of communications, can increase the number of small packets significantly. In this paper, we measure the performance of Long Term Evolution (LTE) uplink as a backhaul for IoT networks. We experiment with differently sized packets in order to find optimal packet sizes that can result in maximum utilization of available resources in the LTE air interface. To the best of our knowledge, this is the first paper to thoroughly evaluate LTE uplink performance with different packet sizes based on empirical evidence. The results indicate that with very small packets the throughput performance is less than half from that obtained with large packets. As an application to exploit the achieved results, we propose IoT gateway solutions to perform packet aggregation at mobile edge to maximize resource utilization in the air interface
The proceedings of Testing Solutions for 4G Radio Access Technologies Seminar
No full textEnsuring the quality and correctness of complex system such 3G Long Term Evolution LTE sets major challenges for the effi ciency of the testing activities. Testing is needed to be carried out in multiple phas-es from early phase unit testing towards system and acceptance testing of overall system, each phase typi-cally needing different set of test tools, scripts and environments. As the implementation of a particular unit (e.g., protocol layer) is often also dependent on other units that may not be available during early phase testing, a great amount of environment simulations are also needed to facilitate the testing. In addi-tion, with development of embedded system such LTE base station, the target hardware may not be avail-able in early phase testing, requiring execution of tests in simulated target environment. The seminar focuses on results of the CrossNet project, which is a crosslayer network support function and optimization research and development project for evolving broadband wireless access standards. The goal is to connect the existing physical layer simulation and hardware emulation models to the high layer network emulators and testers. This provides opportunities for network testing equipment development and network protocol crosslayer optimization in practical networks and products
The proceedings of Testing Solutions for 4G Radio Access Technologies Seminar
No full textEnsuring the quality and correctness of complex system such 3G Long Term Evolution LTE sets major challenges for the effi ciency of the testing activities. Testing is needed to be carried out in multiple phas-es from early phase unit testing towards system and acceptance testing of overall system, each phase typi-cally needing different set of test tools, scripts and environments. As the implementation of a particular unit (e.g., protocol layer) is often also dependent on other units that may not be available during early phase testing, a great amount of environment simulations are also needed to facilitate the testing. In addi-tion, with development of embedded system such LTE base station, the target hardware may not be avail-able in early phase testing, requiring execution of tests in simulated target environment. The seminar focuses on results of the CrossNet project, which is a crosslayer network support function and optimization research and development project for evolving broadband wireless access standards. The goal is to connect the existing physical layer simulation and hardware emulation models to the high layer network emulators and testers. This provides opportunities for network testing equipment development and network protocol crosslayer optimization in practical networks and products
IPTV over WiMax with MIPv6 handovers
No full textAs the IPv4 unallocated address pool nears exhaustion, an increasing number of IPv6 deployments is anticipated. In the domain of mobility management research and development, mobile IPv6 has long been favored over mobile IPv4. Nevertheless, although in principle WiMax supports IPv6 in various configurations and requires MIPv6 for network-level mobility management, in practice, vendors are actively deploying these capabilities only in part. This paper provides a thorough review of the role of IPv6 and MIPv6 in WiMax networks, surveying the work in relevant standardization bodies. The second contribution of this paper is a testbed evaluation of IPTV streaming over WiMAX. We employ two WiMax testbeds deployed in Finland and Portugal, interconnected by GEANT and quantify MIPv6 performance in a real-time multimedia streaming scenario over WiMAX. Beyond demonstrating the feasibility of such a deployment, our results indicate that WiMAX can provide a viable option as both access and backhauling technology. (26 refs.
Transport Use Case Trials of 5G-HEART Project
No full text5G-HEART (5G HEalth AquacultuRe and Transport validation trials) project focuses on realising 5G trials and validating 5G Key Performance Indicators (KPIs) on the vital vertical use-cases of healthcare, transport and aquaculture. In the health area, 5G-HEART validates pillcams for automatic detection in screening of colon cancer and vital-sign patches with advanced geo-localization as well as 5G Augmented/Virtual Reality (AR/VR) paramedic services. In the transport area, 5G-HEART validates autonomous/ assisted/ remote driving and vehicle data services. In the aquaculture area, 5G-HEART validates 5G-based fish farm monitoring systems. Among them, transport sector connected with fifth generation (5G) mobile communications systems will drive transformational changes while bringing social, economic and industrial benefits to the economies that take the lead in its adoption. 5G-enabled industry digitisation for automotive and public transport represents 10% and 8% of the overall $1.3T market in 2026, respectively. In this paper, transport use case trials of 5G-HEART project are introduced
Transport Use Case Trials of 5G-HEART Project
No full text5G-HEART (5G HEalth AquacultuRe and Transport validation trials) project focuses on realising 5G trials and validating 5G Key Performance Indicators (KPIs) on the vital vertical use-cases of healthcare, transport and aquaculture. In the health area, 5G-HEART validates pillcams for automatic detection in screening of colon cancer and vital-sign patches with advanced geo-localization as well as 5G Augmented/Virtual Reality (AR/VR) paramedic services. In the transport area, 5G-HEART validates autonomous/ assisted/ remote driving and vehicle data services. In the aquaculture area, 5G-HEART validates 5G-based fish farm monitoring systems. Among them, transport sector connected with fifth generation (5G) mobile communications systems will drive transformational changes while bringing social, economic and industrial benefits to the economies that take the lead in its adoption. 5G-enabled industry digitisation for automotive and public transport represents 10% and 8% of the overall $1.3T market in 2026, respectively. In this paper, transport use case trials of 5G-HEART project are introduced
Mobile WiMAX
No full textOne of the technologies that can lay the foundation for the next generation (fourth generation [4G]) of mobile broadband networks is popularly known as “WiMAX.” WiMAX, Worldwide Interoperability for Micro wave Access, is de-signed to deliver wireless broadband bitrates, with Quality of Service(QoS) guarantees for different traffic classes, robust security, and mo-bility. This article provides an overview of mobile WiMAX, which is based on the wireless local and Metropolitan-Area Network (MAN) standards IEEE 802.16-2004[1] and 802.16e-2005[2]. We introduce WiMAX and focus on its mobile system profile and briefly review the role of the WiMAX Forum. We summarize the critical points of the WiMAX network reference model and present the salient charac-teristics of the PHY and MAC layers as specified in [1] and [2]. Then we address how mobile nodes enter a WiMAX network and explain the fundamentals of mobility support in WiMAX. Finally, we briefly compare WiMAX with High-Speed Packet Access (HSPA), another contender for 4G
Transport Use Case Trials of 5G-HEART Project
No full text5G-HEART (5G HEalth AquacultuRe and Transport validation trials) project focuses on realising 5G trials and validating 5G Key Performance Indicators (KPIs) on the vital vertical use-cases of healthcare, transport and aquaculture. In the health area, 5G-HEART validates pillcams for automatic detection in screening of colon cancer and vital-sign patches with advanced geo-localization as well as 5G Augmented/Virtual Reality (AR/VR) paramedic services. In the transport area, 5G-HEART validates autonomous/ assisted/ remote driving and vehicle data services. In the aquaculture area, 5G-HEART validates 5G-based fish farm monitoring systems. Among them, transport sector connected with fifth generation (5G) mobile communications systems will drive transformational changes while bringing social, economic and industrial benefits to the economies that take the lead in its adoption. 5G-enabled industry digitisation for automotive and public transport represents 10% and 8% of the overall $1.3T market in 2026, respectively. In this paper, transport use case trials of 5G-HEART project are introduced
Mobile WiMAX
No full textOne of the technologies that can lay the foundation for the next generation (fourth generation [4G]) of mobile broadband networks is popularly known as “WiMAX.” WiMAX, Worldwide Interoperability for Micro wave Access, is de-signed to deliver wireless broadband bitrates, with Quality of Service(QoS) guarantees for different traffic classes, robust security, and mo-bility. This article provides an overview of mobile WiMAX, which is based on the wireless local and Metropolitan-Area Network (MAN) standards IEEE 802.16-2004[1] and 802.16e-2005[2]. We introduce WiMAX and focus on its mobile system profile and briefly review the role of the WiMAX Forum. We summarize the critical points of the WiMAX network reference model and present the salient charac-teristics of the PHY and MAC layers as specified in [1] and [2]. Then we address how mobile nodes enter a WiMAX network and explain the fundamentals of mobility support in WiMAX. Finally, we briefly compare WiMAX with High-Speed Packet Access (HSPA), another contender for 4G
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