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Group communication based on standard interfaces

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Dynamic group communication

André Schiper

Group communication is the basic infrastructure for implementing fault-tolerant replicated servers. While group communication is well understood in the context of static groups (in which the membership does not change), current specifications of dynamic ...

Springer Verlag2006

Architectural Issues of JMS Compliant Group Communication

Nils Richard Ekwall, Arnas Kupsys

Group communication provides one-to-many communication primitives that simplify the development of highly available services. Despite advances in research and numerous prototypes, group communication stays confined to small niches. To facilitate the accept ...

2005

Efficient Distributed Multiresolution Processing for Data Gathering in Sensor Networks

Razvan Cristescu, Jugoslava Acimovic

We consider large sensor networks where the cost of collecting data from the network nodes to the data gathering sink is critical.~We propose several algorithms that use limited local communication and distributed signal processing to make communication mo ...

2005

Adaptive Distributed Algorithms for Power-Efficient Data Gathering in Sensor Networks

Razvan Cristescu, Jugoslava Acimovic

In this work, we consider the problem of designing adaptive distributed processing algorithms in large sensor networks that are efficient in terms of minimizing the total power spent for gathering the spatially correlated data from the sensor nodes to a si ...

2005

A new look at atomic broadcast in the asynchronous crash-recovery model

André Schiper, Sergio Mena

Atomic broadcast in particular, and group communication in general, have mainly been specified and implemented in a system model where processes do not recover after a crash. The model is called crash-stop. The drawback of this model is its inability to ex ...

2005

JMSGroups

Arnas Kupsys

Nowadays, computers are the indispensable part of our life. They evolve rapidly and are more and more versatile. Computer networks made the remote corners of the world just a click away. But unavoidably, any software and hardware component is subject to fa ...

EPFL2005

An invariant matrix structure in multiantenna communications

Ali H. Sayed

This letter shows that the matrix structure with 2/spl times/2 Alamouti sub-blocks remains invariant under several nontrivial matrix operations, including matrix inversion, Schur complementation, Riccati recursion, triangular factorization, and QR factoriz ...

IEEE2005

Towards JMS Compliant Group Communication - a Semantic Mapping

André Schiper, Matthias Wiesmann, Stefan Pleisch, Arnas Kupsys

Group communication provides communication primitives with various semantics and their use greatly simplifies the development of highly available services. However, despite tremendous advances in research and numerous prototypes, group communication stays ...

2004

Towards Flexible Finite-State Machine Based Protocol Composition

André Schiper, Sergio Mena, Nils Richard Ekwall, Stefan Pleisch

Group communication provides primitives that ensure reliable and ordered delivery of messages to a group of destinations. It is an important building block for replicated fault-tolerant applications such as replicated databases. In the past, most group com ...

2004

Beyond 1-Safety and 2-Safety for replicated databases: Group-Safety

André Schiper, Matthias Wiesmann

In this paper, we study the safety guarantees of group communication-based database replication techniques. We show that there is a model mismatch between group communication and database, and because of this, classical group communication systems cannot b ...

2004