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Alisa Devlic
  • Sweden
Abstract—This paper presents a P2PSIP notification architec-ture, where a traditional SIP notification server is replaced by a P2P overlay network for enhanced scalability, redundancy, as well as failure and recovery features. At the same... more
Abstract—This paper presents a P2PSIP notification architec-ture, where a traditional SIP notification server is replaced by a P2P overlay network for enhanced scalability, redundancy, as well as failure and recovery features. At the same time non-overlay SIP user agents continue to transparently access the overlay as they would in a centralized SIP notification architecture. The proposed mechanism is implemented with a structured P2P overlay network, an application level multicast protocol, and an accompanying modified SIP stack that allows the invocation of the P2P functionality. Not all the overlay peers need to have a SIP stack; only the ones acting as gateways to out of overlay SIP requests. Internally the application level multicast protocol distributes and decentralizes the entire notification process in terms of publications, subscriptions, and notifications. Finally, our proof of concept implementation is presented. I.
communication dispatch KTH In fo rmat ion and Communica t ion Techno logy Context-addressed communication dispatch
Abstract: This article presents semantic matchmaking of advanced personalized mobile services using intelligent middle agents in an electronic market (e-market). The traditional telecommunication services are implemented as Web services... more
Abstract: This article presents semantic matchmaking of advanced personalized mobile services using intelligent middle agents in an electronic market (e-market). The traditional telecommunication services are implemented as Web services using emerging Parlay X Web Service framework and semantically described with DARPA Agent Markup Language for Services (DAML-S) ontology. This enables us to compose advanced personalized mobile services, such as traffic management Web service, that exploit benefits of both Internet information services and traditional telecom services. Moreover, using DAML-S for semantic description of information and telecom Web services opens up exciting opportunities in the automation of matchmaking process in the e-market. We have adopted a component-based approach in building our intelligent agents responsible for semantic matchmaking of personalized mobile services. A scenario with personalized mobile Web service for traffic management in the target location sh...
Communication has always been an essential part of peo-ple's everyday life. Nowadays most of people would liketo be reachable on multiple devices at anytime, anyplace. As a consequence, there has b ...
The concept of software-defined networking (SDN)recently gained huge momentum in the industry, driven mainlyby IT companies interested in datacenter applications. In thispaper, however, we consider SDN applied in the carrier domain,which... more
The concept of software-defined networking (SDN)recently gained huge momentum in the industry, driven mainlyby IT companies interested in datacenter applications. In thispaper, however, we consider SDN applied in the carrier domain,which poses additional requirements on the network architecture,including network management functions. We derive concreterequirements for the use-case of a virtualized multi-provideraccess/aggregation network based on carrier-grade SDN. Wethen provide initial architectural considerations for integrationof network management extensions to the SDN framework asdefined by the Open Networking Foundation (ONF). Architec-tural considerations include definition of the required entities andtheir interactions. Finally, we apply the proposed architecture onthe access/aggregation network use-case, outlining procedures ofhow the network management extensions can enable networkwide and node specific management & configuration
Context-aware services are gaining momentum in mobile computing. To enable rapid development of context-aware services,context information has to be retrieved from the environment, modeled,processe ...
The master thesis investigates the issues of service provisioning in mobile network. Service provisioning is dened as the setting in place and conguri
This research concerns exploiting knowledge of the user's environment (i.e., context information) to enrich a user's communication making it more personal, by ensuring that the user receives only r ...
This article presents semantic matchmaking of advanced personalized mobile services using intelligent middle agents in an electronic market (e-market). The traditional telecommunication services are implemented as Web services using... more
This article presents semantic matchmaking of advanced personalized mobile services using intelligent middle agents in an electronic market (e-market). The traditional telecommunication services are implemented as Web services using emerging Parlay X Web Service framework and semantically described with DARPA Agent Markup Language for Services (DAML-S) ontology. This enables us to compose advanced personalized mobile services, such as traffic management Web service, that exploit benefits of both Internet information services and traditional telecom services. Moreover, using DAML-S for semantic description of information and telecom Web services opens up exciting opportunities in the automation of matchmaking process in the e-market. We have adopted a component-based approach in building our intelligent agents responsible for semantic matchmaking of personalized mobile services. A scenario with personalized mobile Web service for traffic management in the target location shows that p...
This report defines a carrier-grade split architecture based on requirements identified during the SPARC project. It presents the SplitArchitecture proposal, the SPARC concept for Software Defined Networking (SDN) introduced for... more
This report defines a carrier-grade split architecture based on requirements identified during the SPARC project. It presents the SplitArchitecture proposal, the SPARC concept for Software Defined Networking (SDN) introduced for large-scale wide area networks such as access/aggregation networks, and evaluates technical issues against architectural trade-offs. First we present the control and management architecture of the proposed SplitArchitecture. Here, we discuss a recursive control architecture consisting of hierarchically stacked control planes and provide initial considerations regarding network management integration to SDN in general and SplitArchitecture in particular. Next, OpenFlow extensions to support the carrier-grade SplitArchitecture are discussed. These are: a) Openness & Extensibility; b) Virtualization; c) OAM; d) Resiliency approaches; e) Bootstrapping and topology discovery; f) Service creation; g) Energy-efficient networking; h) QoS aspects; and i) Multilayer a...
In a traditional context-aware system, most context information is local to a device. However, we may need access to context information from outside the device. Increasingly mobile electronic devices are equipped with Bluetooth and/or... more
In a traditional context-aware system, most context information is local to a device. However, we may need access to context information from outside the device. Increasingly mobile electronic devices are equipped with Bluetooth and/or WLAN network interfaces. Both of these technologies enable ad hoc discovery & networking. In this paper we evaluate the use of these technologies for context distribution within a local area (i.e., limited to a single hop). Using Bluetooth, we begin by discovering devices using Bluetooth's discovery protocol, collect their context information, create an XML file containing this information, and distribute this file to all discovered devices, such that every device now has the same context information. Next we perform the same discovery, collect, and distribute functions, but using WLAN. In each case we have performed the cycle of operations starting with a fully charged battery and continuing until the device was not able to utilize the selected ...
Research Interests:
In a traditional context-aware system, most context information is local to a device. However, we may need access to context information from outside the device. Increasingly mobile electronic devices are equipped with Bluetooth and/or... more
In a traditional context-aware system, most context information is local to a device. However, we may need access to context information from outside the device. Increasingly mobile electronic devices are equipped with Bluetooth and/or WLAN network interfaces. Both of these technologies enable ad hoc discovery & networking. In this paper we evaluate the use of these technologies for context distribution within a local area (i.e., limited to a single hop). Using Bluetooth, we begin by discovering devices using Bluetooth's discovery protocol, collect their context information, create an XML file containing this information, and distribute this file to all discovered devices, such that every device now has the same context information. Next we perform the same discovery, collect, and distribute functions, but using WLAN. In each case we have performed the cycle of operations starting with a fully charged battery and continuing until the device was not able to utilize the selected ...
Research Interests:
This article presents semantic matchmaking of advanced personalized mobile services using intelligent middle agents in an electronic market (e-market). The traditional telecommunication services are implemented as Web services using... more
This article presents semantic matchmaking of advanced personalized mobile services using intelligent middle agents in an electronic market (e-market). The traditional telecommunication services are implemented as Web services using emerging Parlay X Web Service framework and semantically described with DARPA Agent Markup Language for Services (DAML-S) ontology. This enables us to compose advanced personalized mobile services, such as traffic management Web service, that exploit benefits of both Internet information services and traditional telecom services. Moreover, using DAML-S for semantic description of information and telecom Web services opens up exciting opportunities in the automation of matchmaking process in the e-market. We have adopted a component-based approach in building our intelligent agents responsible for semantic matchmaking of personalized mobile services. A scenario with personalized mobile Web service for traffic management in the target location shows that p...
Research Interests:
... in the user's current context (eg the user might set preferences regarding receiving e-mail, SMS, facsimile, voicemail, voice ... Most existing systems apply physical context information, especially location: the Active... more
... in the user's current context (eg the user might set preferences regarding receiving e-mail, SMS, facsimile, voicemail, voice ... Most existing systems apply physical context information, especially location: the Active Badge System [26], the Cricket Location System [27], the ...
ABSTRACT

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