Stefano Salsano
University of Rome Tor Vergata, Ingegneria Elettronica, Faculty Member
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ABSTRACT — In this paper we describe “MEMs”
— To date, mobile services have failed to match the explosive growth of the Web. This, we argue, is because current mobile services are difficult to find, to use, to trust, to design and deploy. The IST SMS (Simple Mobile Services)... more
— To date, mobile services have failed to match the explosive growth of the Web. This, we argue, is because current mobile services are difficult to find, to use, to trust, to design and deploy. The IST SMS (Simple Mobile Services) project takes up the challenge of creating innovative tools addressing the specific needs of mobile users and making it easier for individuals and small businesses to become providers of Simple Mobile Services. We hope that, thanks to SMS, a large base of people can create Simple Mobile Services, like it happened for the Web, where creating a web page is within the reach of non-expert users. In this paper, we first focus on one of the facets of SMS: service authoring tools. We highlight the importance of powerful authoring tools, to speed up and reduce the cost of service development. Then we focus on the location based services that are an important component of SMS. Index Terms — simple mobile services, service creation, location based services
The actual standards for service authoring, composition and development are not easy to port and to apply for next generation mobile applications. This paper describes some tools that we’re developing in the context of the IST-Simple... more
The actual standards for service authoring, composition and development are not easy to port and to apply for next generation mobile applications. This paper describes some tools that we’re developing in the context of the IST-Simple Mobile Service project, whose aim is to ease the authoring and the use of services for mobile devices. We propose a service composition approach using an UML profile very close to the actual standards for Web Services definition and authoring, like WSDL and BPEL. We take a glance at SMILE, the run-time support we provide for service execution. Finally we hint at an efficient serialization mechanism based on JSON, a human readable data exchange format less verbose and, in our opinion, more suitable for mobile terminals than XML. 1.
The introduction of SDN in large-scale IP provider networks is still an open issue and different solutions have been suggested so far. In this paper we propose a hybrid approach allowing the coexistence of traditional IP routing with SDN... more
The introduction of SDN in large-scale IP provider networks is still an open issue and different solutions have been suggested so far. In this paper we propose a hybrid approach allowing the coexistence of traditional IP routing with SDN based forwarding within the same provider domain. The solution is called OSHI - Open Source Hybrid IP/SDN networking as we have fully implemented it combining and extending Open Source software. We discuss the OSHI system architecture and the design and implementation of advanced services like Pseudo Wires and Virtual Switches. Moreover we designed and implemented a set of Open Source management tools for the emulation of the proposed solution over the Mininet emulator and over distributed testbeds. We refer to this suite of tools as Mantoo (Management tools). Mantoo includes an extensible webbased graphical topology designer providing different layered network "views" (e.g. from physical links to service relationships among nodes). The fr...
Traffic Engineering (TE) in IP carrier networks is one of the functions that can benefit from the Software Defined Networking paradigm. By logically centralizing the control of the network, it is possible to "program" per-flow... more
Traffic Engineering (TE) in IP carrier networks is one of the functions that can benefit from the Software Defined Networking paradigm. By logically centralizing the control of the network, it is possible to "program" per-flow routing based on TE goals. Traditional per-flow routing requires a direct interaction between the SDN controller and each node that is involved in the traffic paths. Depending on the granularity and on the temporal properties of the flows, this can lead to scalability issues for the amount of routing state that needs to be maintained in core network nodes and for the required configuration traffic. On the other hand, Segment Routing (SR) is an emerging approach to routing that may simplify the route enforcement delegating all the configuration and per-flow state at the border of the network. In this work we propose an architecture that integrates the SDN paradigm with SR-based TE, for which we have provided an open source reference implementation. We...
Information-centric networking (ICN) is a novel networking paradigm which is attracting increasing attention by both academic and industrial researchers. In fact, it promises to provide technological solutions that best fit with the way... more
Information-centric networking (ICN) is a novel networking paradigm which is attracting increasing attention by both academic and industrial researchers. In fact, it promises to provide technological solutions that best fit with the way in which Internet is actually utilized. Assessment of proposed solutions require appropriate experimental testbeds. In this context OpenFlow, which has been developed to enable the deployment of novel networking solutions in the actual network infrastructure, represents a valuable tool. Accordingly, we are currently implementing an ICN solution - called CONET - for OpenFlow networks. The solution will be deployed in two testbeds, part of larger experimental OpenFlow facility distributed across Europe realized by the EU funded OFELIA project. In particular one testbed will be based on the Open vSwitch platform while the other will be deployed on NetFPGA platforms. Our implementation has been designed to easily support other ICN solutions with simple m...
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(MBMS) has been included in the 3GGP architecture to provide broadcast/multicast services. In the 3GPP Long Term Evolution, the evolved MBMS (e-MBMS) architecture is currently being standardized. This position paper discusses the security... more
(MBMS) has been included in the 3GGP architecture to provide broadcast/multicast services. In the 3GPP Long Term Evolution, the evolved MBMS (e-MBMS) architecture is currently being standardized. This position paper discusses the security issues currently being considered for the e-MBMS IP multicast user plane. Currently proposed security architectures "limit " themselves to include Group Security Associations (GSA). In this paper we raise the position that GSA might not be a sufficiently secure solution in the long run. In sight of this, we propose to adopt a secure multicast overlay approach as a possible short-term solution, thanks to its straightforward deployment. To prove this latter point we overview how to set-up a proof-of-concept implementation over public domain linux routers. We functionally compare GSA with the proposed secure multicast overlay approach, showing that the overlay approach provides not only the same level of security, but also a reduced risk of ...
Mobile data service use remains low compared with existing services such as text messaging and voice calls. We believe a key limiting factor is the effort demanded of the user to discover and parameterise services with information... more
Mobile data service use remains low compared with existing services such as text messaging and voice calls. We believe a key limiting factor is the effort demanded of the user to discover and parameterise services with information relating to their current activity against more pressing situational demands. Limited input and output facilities on mobile devices typically make service interactions inherently cumbersome. We describe an approach for using activity and context to streamline the discovery and use of mobile services. Specifically, we outline how to carry, re-use and share information across contexts comprising an activity to reduce the need for data entry and interactions when using mobile services while mobile. We involve the user in offsetting these interactions to the desktop, a more natural context for activity preparation. The number of interactions can be further minimised using generated information snippets and user mediated filtering of relevant services to certai...
The integration of the intelligent network and B-ISDN offers a cost effective and flexible way to provide advanced services in public ATM networks in the near/medium term perspective. New modelling concepts in the IN architecture must be... more
The integration of the intelligent network and B-ISDN offers a cost effective and flexible way to provide advanced services in public ATM networks in the near/medium term perspective. New modelling concepts in the IN architecture must be defined to support this integration. The main enhancements with respect to traditional IN has been the introduction of the session model within the
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ABSTRACT In this paper we propose to integrate Software Defined Networking (SDN) principles in Wireless Mesh Networks (WMN) formed by OpenFlow switches. The use of a centralized network controller and the ability to setup arbitrary paths... more
ABSTRACT In this paper we propose to integrate Software Defined Networking (SDN) principles in Wireless Mesh Networks (WMN) formed by OpenFlow switches. The use of a centralized network controller and the ability to setup arbitrary paths for data flows make SDN a handy tool to deploy fine-grained traffic engineering algorithms in WMNs. However, centralized control may be harmful in multi-hop radio networks formed by commodity devices (e.g. Wireless Community Networks), in which node isolation and network fragmentation are not rare events. To exploit the pros and mitigate the cons, our framework uses the traditional OpenFlow centralized controller to engineer the routing of data traffic, while it uses a distributed controller based on OLSR to route: i) OpenFlow control traffic, ii) data traffic, in case of central controller failure. We implemented and tested our Wireless Mesh Software Defined Network (wmSDN) showing its applicability to a traffic engineering use-case, in which the controller logic balances outgoing traffic among the Internet gateways of the mesh. Albeit simple, this use case allows showing a possible usage of SDN that improves user performance with respect to the case of a traditional mesh with IP forwarding and OLSR routing. The wmSDN software toolkit is formed by Open vSwitch, POX controller, OLSR daemon and our own Bash and Python scripts. The tests have been carried out in an emulation environment based on Linux Containers, NS3 and CORE tools.
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ABSTRACT
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... Giuseppe Bianchi DIE Universit`a di Roma-Tor Vergata, Italy giuseppe.bianchi@uniroma2.it ... Production Planning and Supply-Chain Manage-ment Multi-Agent Solution, in EXP in search of innovation-Special Issue on JADE TILAB Journal,... more
... Giuseppe Bianchi DIE Universit`a di Roma-Tor Vergata, Italy giuseppe.bianchi@uniroma2.it ... Production Planning and Supply-Chain Manage-ment Multi-Agent Solution, in EXP in search of innovation-Special Issue on JADE TILAB Journal, 2003 [18] A.Garro, L.Palopoli ...