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The Internet access paradigm is changing and a wide range of overlapping radio access technologies, such as WiMAX, Wi-Fi, 3GPP UMTS/LTE and DVB-H, will soon be available to most users and their multi-access devices. Therefore, novel mechanisms and protocols are needed to provide seamless mobility between different wireless access technologies. This paper(More)
A new era in telecommunications is emerging. Virtualised networking functions and resources will offer network operators a way to shift the balance of expenditure from capital to operational, opening up networks to new and innovative services. This paper introduces the concept of Edge-as-a-Service (EaaS), a means of harnessing the flexibility of virtualised(More)
Wireless Metropolitan Area Networks based on IEEE 802.16 standards are in the deployment phase in many countries. In fact, this technology can deliver high data rate while covering long distances, being a suitable candidate to solve the problem of digital divide and thus being able to provide connectivity in isolated and impervious areas. This paper(More)
Video is a major challenge for the future mobile Internet as it is foreseen to account for close to 64% percent of consumer mobile traffic by 2013. However, the current Internet, and in particular the mobile Internet, was not designed with video requirements in mind and, as a consequence, its architecture is very inefficient when handling this type of(More)
Next generation networks will include a diversity of wireless technologies for the network access. In the DAIDALOS project, an architecture that provides seamless QoS support, mobility, security and multicast, among other features, is being designed for such a heterogeneous wireless environment. This paper focuses on the wireless QoS part of this(More)
Wireless Metropolitan Area Networks based on IEEE 802.16d/e standards are soon to be deployed in several countries. However, there is lack of published literature with results from actual testbeds. This paper introduces the work done in the EU Sixth Framework Programme Project WEIRD to design and set up WiMAX testbeds in four EU countries. We describe the(More)
The fast growing of mobile Internet users with the ability of using a wide diversity of access technologies such as Wi-Fi, WiMAX and UMTS/LTE, and the increasing proliferation of mobile devices with heterogeneous network interfaces, require versatile mobility mechanisms providing seamless roaming across those access technologies. Mobility agents such as(More)
The advent of Cloud Computing opened new opportunities in several areas, namely in the application development processes. As consequence, nowadays, PaaS (Platform-as-a-Service) service model allows simpler and flexible deployment strategies of applications, avoiding the need for dedicated networks, servers, storage, and other services. Within this context,(More)