59 research outputs found
Local Coordination for Interpersonal Communication Systems
The decomposition of complex applications into modular units is anacknowledged design principle for creating robust systems and forenabling the flexible re-use of modules in new applicationcontexts. Typically, component frameworks provide mechanisms and rulesfor developing software modules in the scope of a certain programmingparadigm or programming language and a certain computing platform. Forexample, the JavaBeans framework is a component framework for thedevelopment of component-based systems -- in the Java environment.In this thesis, we present a light-weight, platform-independentapproach that views a component-based application as a set of ratherloosely coupled parallel processes that can be distributed on multiplehosts and are coordinated through a protocol. The core of ourframework is the Message Bus (Mbus): an asynchronous, message-orientedcoordination protocol that is based on Internet technologies andprovides group communication between application components.Based on this framework, we have developed a local coordinationarchitecture for decomposed multimedia conferencing applications thatis designed for endpoint and gateway applications. One element of thisarchitecture is an Mbus-based protocol for the coordination of callcontrol components in conferencing applications
Statement: The Metaverse as an Information-Centric Network
This paper discusses challenges and opportunities of considering the
Metaverse as an Information-Centric Network (ICN). The Web today essentially
represents a data-centric application layer: data named by URLs is manipulated
with REST primitives. However, the semantic gap with the underlying
host-oriented transport is significant, typically leading to complexity,
centralization, and brittleness. Popular interest in "the Metaverse" suggests
that the end-user experience of the Web will evolve towards always-on eXtended
Reality (XR). With the benefit of a historical perspective, computing advances,
and decades of experience with a global network, there is an opportunity to
holistically consider the Metaverse not as an application of the current
network, but an evolution of the network itself, reducing rather than widening
the gap between network architecture and application semantics. An ICN
architecture offers the possibility to achieve this with less overhead, low
latency, better security, and more disruption tolerance suitable to diverse
uses cases, even those facing intermittent connectivity.Comment: The final version of this paper has been accepted for publication in
the proceedings of ACM ICN-2023. Please cite the published version
(https://doi.org/10.1145/3623565.3623761
Service Location and Multiparty Peering for Mobile Ad-hoc Communication
Abstract. Flexible personal communications may require dynamically discovering, using, and combining a number of services to support the activities of a mobile user. However, many service discovery and service control protocol frameworks are not designed with requirements for ad-hoc and group communication in a changing environment in mind. In this paper, we motivate the case for personalized group communications based upon a (static) office application scenario featuring simple remote device control and then enhance the scope towards service location and dynamic establishment of group communications for mobile users: ad-hoc multiparty peering. We particularly explore the issues relating to group communication setup and robustness in the presence of changing connectivity and present a framework for mobile multiparty ad-hoc cooperation
10492 Abstracts Collection -- Information-Centric Networking
From December 5th to 8th 2010, the Dagstuhl Seminar 10492 on "Information-Centric Networking" was held in Schloss Dagstuhl -- Leibniz Center for Informatics. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put
together in this paper. The first section describes the seminar topics and
goals in general. Links to extended abstracts or full papers are provided,
if available
Delay-Tolerant ICN and Its Application to LoRa
Connecting long-range wireless networks to the Internet imposes challenges
due to vastly longer round-trip-times (RTTs). In this paper, we present an ICN
protocol framework that enables robust and efficient delay-tolerant
communication to edge networks. Our approach provides ICN-idiomatic
communication between networks with vastly different RTTs. We applied this
framework to LoRa, enabling end-to-end consumer-to-LoRa-producer interaction
over an ICN-Internet and asynchronous data production in the LoRa edge. Instead
of using LoRaWAN, we implemented an IEEE 802.15.4e DSME MAC layer on top of the
LoRa PHY and ICN protocol mechanisms in RIOT OS. Executed on off-the-shelf IoT
hardware, we provide a comparative evaluation for basic NDN-style ICN [60],
RICE [31]-like pulling, and reflexive forwarding [46]. This is the first
practical evaluation of ICN over LoRa using a reliable MAC. Our results show
that periodic polling in NDN works inefficiently when facing long and differing
RTTs. RICE reduces polling overhead and exploits gateway knowledge, without
violating ICN principles. Reflexive forwarding reflects sporadic data
generation naturally. Combined with a local data push, it operates efficiently
and enables lifetimes of >1 year for battery powered LoRa-ICN nodes.Comment: 12 pages, 7 figures, 2 table
SoK: Distributed Computing in ICN
Information-Centric Networking (ICN), with its data-oriented operation and
generally more powerful forwarding layer, provides an attractive platform for
distributed computing. This paper provides a systematic overview and
categorization of different distributed computing approaches in ICN
encompassing fundamental design principles, frameworks and orchestration,
protocols, enablers, and applications. We discuss current pain points in legacy
distributed computing, attractive ICN features, and how different systems use
them. This paper also provides a discussion of potential future work for
distributed computing in ICN.Comment: 10 pages, 3 figures, 1 table. Accepted by ACM ICN 202
Empowering Cyber-Physical Systems with FADEX.
The proliferation of smart devices in close proximity to end users has massively increased availability of data about our surroundings and hence stimulated a plethora of new services. However, it has also increased the chances of leaking sensitive and private information about end users (e.g., geolocation data, biometric signatures). Loss of trust towards a Cloud provider can lead to a user boycott and requests for deletion of the their remotely stored personal information. While many Cloud services can handle this relatively easily, it is far more cumbersome for many smart services. In fact, the current market of smart services is composed of black-box systems dependent on tight coupling between deployed hardware and the Cloud hosted software stack leaving virtually no freedom to change service provider without considerable redeployment costs
A Survey on Content Retrieval on the Decentralised Web
The control, governance, and management of the web have become increasingly centralised, resulting in security, privacy, and censorship concerns. Decentralised initiatives have emerged to address these issues, beginning with decentralised file systems. These systems have gained popularity, with major platforms serving millions of content requests daily. Complementing the file systems are decentralised search engines and name registry infrastructures, together forming the basis of a decentralised web . This survey paper analyses research trends and emerging technologies for content retrieval on the decentralised web, encompassing both academic literature and industrial projects. Several challenges hinder the realisation of a fully decentralised web. Achieving comparable performance to centralised systems without compromising decentralisation is a key challenge. Hybrid infrastructures, blending centralised components with verifiability mechanisms, show promise to improve decentralised initiatives. While decentralised file systems have seen more mature deployments, they still face challenges such as usability, performance, privacy, and content moderation. Integrating these systems with decentralised name-registries offers a potential for improved usability with human-readable and persistent names for content. Further research is needed to address security concerns in decentralised name-registries and enhance governance and crypto-economic incentive mechanisms
Lokale Koordination für interpersonelle Kommunikationssysteme
The decomposition of complex applications into modular units is anacknowledged design principle for creating robust systems and forenabling the flexible re-use of modules in new applicationcontexts. Typically, component frameworks provide mechanisms and rulesfor developing software modules in the scope of a certain programmingparadigm or programming language and a certain computing platform. Forexample, the JavaBeans framework is a component framework for thedevelopment of component-based systems -- in the Java environment.In this thesis, we present a light-weight, platform-independentapproach that views a component-based application as a set of ratherloosely coupled parallel processes that can be distributed on multiplehosts and are coordinated through a protocol. The core of ourframework is the Message Bus (Mbus): an asynchronous, message-orientedcoordination protocol that is based on Internet technologies andprovides group communication between application components.Based on this framework, we have developed a local coordinationarchitecture for decomposed multimedia conferencing applications thatis designed for endpoint and gateway applications. One element of thisarchitecture is an Mbus-based protocol for the coordination of callcontrol components in conferencing applications
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