12 research outputs found
Proposal of a clean slate network architecture for ubiquitous services provisioning
The Pervasive Computing field is almost always addressed from application, middleware, sensing or Human Computer Interaction perspective. Thus, solutions are usually designed at application level or involve developing new hardware.
Although current layered network architectures (mainly TCP/IP stack) have enabled internetworking of lots of different devices and services, they are neither well-suited nor optimized for pervasive computing applications. Hence, we firmly believe that we should have an underlying network architecture providing the
flexible, context-aware and adaptable communication infrastructure required to ease the development of ubiquitous
services and applications. Herein, we propose a clean slate network architecture to deploy ubiquitous services in a Pervasive and Ubiquitous Computing environment. The architecture is designed to avoid hierarchical layering, so we propose a serviceoriented approach for a flow-oriented context-aware network architecture where communications are composed on the fly (using reusable components) according to the needs and requirements of the consumed service.Postprint (published version
Implementation of context-aware network architecture for smart objects based on functional composition
Lack of flexibility of current Internet architecture led researchers to
come up with new paradigms for a novel Internet architecture, which would be
able to reduce complexity and increase flexibility compared to current Internet
architecture. Functional co
mposition is a promising approach to flexible and
evolvable architecture design. The idea is composing complex protocol suites
by dynamically bind
and arrange different functions to obtain certain behavior.
Herein, we present the implementation of a contex
t
-
aware network architecture
based on functional composition for smart objects.
A sub
-
set of those basic
functional blocks
has been implemented and validated on
an
experimental
testbed using different network topologies
.Peer ReviewedPostprint (author’s final draft
Design of a UMTS/GPRS Assisted Mesh Network (UAMN)
Wireless Mesh or multi-hop networks (WMNs) are well known thanks to its simplicity on deployment and the lack of infrastructure. These two advantages come with some drawbacks. WMNs have limitations with the support of Quality of Service (QoS), they do not assure coverage or even connectivity, and security, management and monitoring are not considered key requirements. In order to benefit of mesh networks and use them as an operator graded network, it is necessary to either improve mesh networks to fulfill all these requirements or use an alternative network that offers full availability, connectivity and security to assist the mesh network. Considering the two options, the second is the one selected making use of GPRS/UMTS as an assistant network.
The document describes a set of requirements and the design of the functionalities needed to build an operator graded network using the cellular GPRS/UMTS. The aspects covered in the design are: security, quality of service, mobility, self configuration and optimization. The last point, optimization, is not directly involved with mesh networking, but it is an improvement easy to achieve when using a gateway node to access the Internet through a GPRS/UMTS connection. The design of the solution not only considers functionality, but also feasibility employing of the shelve elements. The mesh nodes and gateways are built on top of Linux operating system with the aim to reuse previous results and open source software. The final objective of the project is to build a usable system to be used as a proof of concept.Peer Reviewe
The analysis of the stability of embankments by the method of slices
Incl. computer programs in back pocketAvailable from British Library Document Supply Centre- DSC:D75457/87 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo
Rate adaptation in 3GPP video streaming using track switching over a multihop WLAN
In nowadays communication technologies, one of the main challenges to overcome is how to translate theoretical algorithms, designed protocols, existing hardware products from different manufacturers and
the already knowhow into innovative applications that can produce a benefit for the user and for the commercializing firm. Following this topic, the present paper introduces an application that combines different emerging technologies: wireless mesh networks, multihop routing and adaptation of streaming delivery with the objective to create a tool for effective marketing campaign
Optimizing the delivery chain in heterogenous networks
Herein, we will focus on proposing a service taxonomy and
classification for RBA/SOA architectures aiming to model a common
framework for the description and composition of possible Atomic Ser-
vices or networking functions valid for architectures coping with het-
erogenous environments. The final objective is fine-tuning the delivery
chain to optimize application and delivery performance and behaviour in
heterogenous networks. Although our work takes the TARIFA architec-
ture as the basis model for our contribution, we think it can be helpful
for other architectures dealing with protocol modularization and service
compositionPeer ReviewedPostprint (published version
Rate adaptation in 3GPP video streaming using track switching over a multihop WLAN
In nowadays communication technologies, one of the main challenges to overcome is how to translate theoretical algorithms, designed protocols, existing hardware products from different manufacturers and
the already knowhow into innovative applications that can produce a benefit for the user and for the commercializing firm. Following this topic, the present paper introduces an application that combines different emerging technologies: wireless mesh networks, multihop routing and adaptation of streaming delivery with the objective to create a tool for effective marketing campaign
Optimizing the delivery chain in heterogenous networks
Herein, we will focus on proposing a service taxonomy and
classification for RBA/SOA architectures aiming to model a common
framework for the description and composition of possible Atomic Ser-
vices or networking functions valid for architectures coping with het-
erogenous environments. The final objective is fine-tuning the delivery
chain to optimize application and delivery performance and behaviour in
heterogenous networks. Although our work takes the TARIFA architec-
ture as the basis model for our contribution, we think it can be helpful
for other architectures dealing with protocol modularization and service
compositionPeer Reviewe
Implementation of context-aware network architecture for smart objects based on functional composition
Lack of flexibility of current Internet architecture led researchers to
come up with new paradigms for a novel Internet architecture, which would be
able to reduce complexity and increase flexibility compared to current Internet
architecture. Functional co
mposition is a promising approach to flexible and
evolvable architecture design. The idea is composing complex protocol suites
by dynamically bind
and arrange different functions to obtain certain behavior.
Herein, we present the implementation of a contex
t
-
aware network architecture
based on functional composition for smart objects.
A sub
-
set of those basic
functional blocks
has been implemented and validated on
an
experimental
testbed using different network topologies
.Peer Reviewe
Proposal of a clean slate network architecture for ubiquitous services provisioning
The Pervasive Computing field is almost always addressed from application, middleware, sensing or Human Computer Interaction perspective. Thus, solutions are usually designed at application level or involve developing new hardware.
Although current layered network architectures (mainly TCP/IP stack) have enabled internetworking of lots of different devices and services, they are neither well-suited nor optimized for pervasive computing applications. Hence, we firmly believe that we should have an underlying network architecture providing the
flexible, context-aware and adaptable communication infrastructure required to ease the development of ubiquitous
services and applications. Herein, we propose a clean slate network architecture to deploy ubiquitous services in a Pervasive and Ubiquitous Computing environment. The architecture is designed to avoid hierarchical layering, so we propose a serviceoriented approach for a flow-oriented context-aware network architecture where communications are composed on the fly (using reusable components) according to the needs and requirements of the consumed service