Causal delivery of messages with real-time data in unreliable networks

Baldoni, Roberto; Mostéfaoui, Achour; Raynal, Michel

doi:10.1007/bf00383387

Cited by 37 publications

(20 citation statements)

References 16 publications

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“…For human participants their behavior depends entirely on them. A whiteboard is a persistent object that provides two public methods: writing and reading, 3 and the contents of the board represent its state. Thus, the value returned by the read operation is determined by the preceding sequence of write operations.…”

Section: Lifetime Of Objectsmentioning

confidence: 99%

“…A message may be delivered to a destination after all its causal predecessor messages meant for that destination have either been delivered or their deadlines have expired. This is the basic idea of the ¡-causal ordering protocol proposed by Baldoni, Mostefaoui and Raynal [3].…”

Section: Preserving Causal Relationship Between Eventsmentioning

confidence: 99%

“…However, [3] and all general purpose causal ordering algorithms prior to that, including [1,5,14,16], require each message to carry an Ò ¢ Ò matrix that contains information about all causal predecessors of the message.…”

Section: Preserving Causal Relationship Between Eventsmentioning

confidence: 99%

“…A combination of ¡-causal ordering concept of [3] and the direct causal predecessor concept of [13] is described in [4].…”

Section: Preserving Causal Relationship Between Eventsmentioning

confidence: 99%

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Issues in message passing for a tele-immersive experience

Prakash

Proceedings Sixth International Workshop on Object-Oriented Real-Time Dependable Systems

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Section: Lifetime Of Objectsmentioning

confidence: 99%

Section: Preserving Causal Relationship Between Eventsmentioning

confidence: 99%

Section: Preserving Causal Relationship Between Eventsmentioning

confidence: 99%

“…A combination of ¡-causal ordering concept of [3] and the direct causal predecessor concept of [13] is described in [4].…”

Section: Preserving Causal Relationship Between Eventsmentioning

confidence: 99%

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Issues in message passing for a tele-immersive experience

Prakash

Proceedings Sixth International Workshop on Object-Oriented Real-Time Dependable Systems

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“…However, in a distributed multimedia system where messages have limited validity time after which the messages become useless and are allowed to be discarded; and messages that arrive at its destination within its validity time must be delivered within the expiration of its validity time and in its causal order. This motivates the following definition of -causal order, introduced in [20] and formalized in [2]. Note that in the following discussion, we assume that all the message delays are included in the term.…”

Section: System Model and Assumptionsmentioning

confidence: 99%

A new look at multimedia synchronization in distributed environments

Yang

Sun²,

Sattar³

et al.

Proceedings Fourth International Symposium on Parallel Architectures, Algorithms, and Networks (I-Span'99)

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A multimedia system requires to handle automatically and uniformly the generation, manipulation, presentation, storage, and communication of independent discrete and continuous media data. The synchronization between various kinds of media data is a key issue in an integrated multimedia system, and has drawn a considerable attention. In this paper, we investigate the synchronization problem in distributed multimedia environments and propose a new approach. Based on a globally synchronized clock, we present an isochronous clock-driven protocol for multimedia synchronization in a distributed environment. We show that the isochronous approach is simple, easy to understand, and more importantly, can guarantee the temporal ordering (including causal order and -causal order). We believe that with the new developments in the improved NTP over Internet and very high accuracy of synchronized clocks over ATM and LANs, the clock-based distributed synchronization would provide a promising, yet simple and intuitive, alternative to the existing approaches.

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Scalable Virtual Environments

Dabbous¹,

Turletti²

2007

Multimedia Multicast on the Internet

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Virtual environments are multi-user network applications in which the users (or participants) can move in a virtual world, communicate with other participants and interact with their environment. We call them large scale virtual environments when the number of participants is very large (dozens, maybe hundreds of thousands). Network games are an example of such applications.While moving inside the virtual world, the participants meet and can communicate with each other by sharing various types of data flows such as their characteristics (coordinates, capability), text messages and audio or video data flows. If the network supports a multipoint transmission service, the application can benefit from it to increase the efficiency of the communication module. By means of the native multipoint, data sending to several participants can be carried out in a transparent fashion for the participant, with only one sending operation, provided the communications do not require reliable transmissions.The multipoint extensions of the IP protocol defined by Steve Deering in the RFC 1112 standard make it possible to provide a multipoint transmission service in connectionless mode towards a "group" of participants.Chapter written by Walid DABBOUS and Thierry TURLETTI.

show abstract

Causal delivery of messages with real-time data in unreliable networks

Cited by 37 publications

References 16 publications

Issues in message passing for a tele-immersive experience

Issues in message passing for a tele-immersive experience

A new look at multimedia synchronization in distributed environments

Scalable Virtual Environments

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