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EDF consensus on CAN bus access for dynamic real-time applications
[chapter]
1998
Lecture Notes in Computer Science
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The paper introduces a mechanism to implement distributed scheduling for CAN-bus resource in order to meet the requirements of a dynamic distributed real-time system. ...
Our motivation is to schedule soft real-time communication optimally with EDF approach, and to guarantee deadlines of hard real-time communication by calendar-based resource reservation. ...
Introduction A real-time communication system (RTCS) constitutes the backbone for distributed control applications. ...
doi:10.1007/3-540-64359-1_774
fatcat:b3e6acl3pvhplgkqjsitqzqshu
Distributed Computer-Controlled Systems: The Dear-COTS Approach 1
2000
IFAC Proceedings Volumes
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This paper proposes a new architecture targeting real-time and reliable Distributed Computer-Controlled Systems (DCCS). ...
However, the use of COTS components and the integration, in the same environment, of hard real-time and soft or non real-time applications introduces new problems. ...
system, without interfering with the guarantees provided to hard real-time applications. ...
doi:10.1016/s1474-6670(17)36739-3
fatcat:nms7nvzga5g3nfp7liq3nknvui
Scheduling hard and soft real-time communication in a controller area network
1999
Control Engineering Practice
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Assuming the existence of hard real-time, soft real-time and non-real-time-distributed activities in a complex distributed real-time system, communication activities can also be considered to have hard ...
While the timeliness of hard real-time communication must be guaranteed, the delivery delay of a soft real-time message may exceed the desired bound in overload situations. ...
Group communication protocol In order to support real-time object groups with consistent information, the group communication protocol must deliver real-time messages to all members of a group in a timely ...
doi:10.1016/s0967-0661(99)00128-8
fatcat:vtgwvtdk7jhpfhhjns24wu37na
Optimal TDMA time slot and cycle length allocation for hard real-time systems
2006
Proceedings of the 2006 conference on Asia South Pacific design automation - ASP-DAC '06
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We present an analytic method to determine the provably smallest possible slot length that must be allocated in a TDMA resource, to serve an event-triggered hard real-time load with arbitrary deterministic ...
We demonstrate the applicability and computational efficiency of the presented methods in a case study of a large distributed embedded system with a TDMA bus, where we will find the optimal parameter set ...
for modular system level performance analysis of hard real-time systems. ...
doi:10.1145/1118299.1118417
fatcat:pge3pjfdojfqbbsgpmbsa7oi6a
Towards Real-Time Middleware for Applications of Vehicular Ad Hoc Networks
[chapter]
2005
Lecture Notes in Computer Science
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This Space-Elastic Model of real-time communication is the first to directly address adaptation in the space domain to guarantee realtime constraints. ...
To guarantee real-time communication, we exploit proximity-based event propagation to guarantee real-time constraints within the defined proximities only. ...
We have currently developed a simulation of TBMAC, a distributed clock synchronisation protocol and a real-time driver for wireless communication using 802.11b. ...
doi:10.1007/11498094_1
fatcat:yrqzgjzypbhodghx5odzyzhhtm
Centralized vs distributed communication scheme on Switched Ethernet for embedded military applications
2009
2009 IEEE International Symposium on Industrial Embedded Systems
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Our objective is to assess and compare the real time guarantees that each proposal can offer. ...
Therefore, a new interconnection system is needed to overcome these limitations. Two new communication networks based upon Full Duplex Switched Ethernet are presented herein in this aim. ...
Real-time traffic is not smoothed and is sent as soon as it arrives. This approach provides statistical guarantees which is not sufficient for hard real-time systems like the military applications. ...
doi:10.1109/sies.2009.5196216
dblp:conf/sies/MifdaouiFF09
fatcat:23uhbezlfnaknakbvvylxzg7we
Guaranteeing synchronous message deadlines with the timed token medium access control protocol
1994
IEEE transactions on computers
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Index Terms-Hard real-time, distributed system, FDDI, timed token medium access control protocol, synchronous messages, performance evaluation and analysis, synchronous bandwidth, worst case achievable ...
We study the problem of guaranteeing synchronous message deadlines in token ring networks where the timed token medium access control protocol is employed. ...
Distributed realtime systems may be categorized as soft real-time systems or hard real-time systems. ...
doi:10.1109/12.272433
fatcat:32auoj5iz5fy3lhrxu3kilxl5i
Providing Hard Real-Time Guarantees in Context-Aware Applications: Challenges and Requirements
2005
Fourth IEEE International Symposium on Network Computing and Applications
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(ii) Eventbased real-time middleware supports communication between sentient objects and provides hard real-time guarantees within adaptable geographic spaces. ...
(iii) A real-time routing and resource reservation protocol attempts to discover and maintain real-time constrained routes within these proximities in a multi-hop ad hoc network. ...
The authors are grateful to Science Foundation Ireland for their support of the work described in this paper under Investigator award 02/IN1/I250 between 2003 and 2007. ...
doi:10.1109/nca.2005.42
dblp:conf/nca/BoulkenafedHMBC05
fatcat:zeimgnoqenfjbi66szl4hg4gaq
A Survey on Real-Time Communications in Wireless Sensor Networks
2017
Wireless Communications and Mobile Computing
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As for grouping, we categorize the approaches into hard, soft, and firm real-time model. ...
Based on this deficiency, in this paper, we present the up-to-date research approaches and discuss the important features related to real-time communications in wireless sensor networks. ...
In this model, as for platform through integrated project, REWIN [28] , real-time guarantees in wireless sensor networks, was launched to offer hard real-time guarantees to individual real-time flows ...
doi:10.1155/2017/1864847
fatcat:jdgzbjz3dbblfgs3adfmaosxju
Middleware for real-time distributed simulations
2004
Concurrency and Computation
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We discuss design alternatives for realizing such middleware for hard real-time (HRT) distributed simulations such as hardware-in-theloop applications. ...
Related work is presented in Section 2. Section 3 illustrates common models for real-time execution of distributed simulations. ...
Hard Real-Time Federation Execution Hard real-time execution implies that meeting a deadline is an absolute requirement for correctness in the simulation system. ...
doi:10.1002/cpe.874
fatcat:uwyaayg2jzgqjg22f63paam4mm
qPALS: Quality-Aware Synchrony Protocol for Distributed Real-Time Systems
2014
KSII Transactions on Internet and Information Systems
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Synchronous computing models provided by real-time synchrony protocols, such as TTA [1] and PALS [2] , greatly simplify the design, implementation, and verification of real-time distributed systems. ...
In particular, most previous real-time synchrony protocols hypothesize the existence of underlying fault tolerant real-time networks. ...
In particular, we are interested in guaranteeing the communication bound in non-fault tolerant and non-real-time networks. ...
doi:10.3837/tiis.2014.10.004
fatcat:jun3gbqihffxfoe6mfnpq6ia34
Statistical real-time channels on multiaccess bus networks
1997
IEEE Transactions on Parallel and Distributed Systems
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In this paper, we present a scheme which can provide real-time communication services with both absolute and statistical performance guarantees on multiaccess bus networks for given input traffic characteristics ...
Real-time communication with performance guarantees is expected to become an important and necessary feature of future computer networks. ...
ACKNOWLEDGMENTS The work reported in this paper was supported in part by the U.S. National Science Foundation under Grant MIP-9203895 and by the U.S. ...
doi:10.1109/71.605764
fatcat:pvnwseuptfduzge4fff3mb67ju
Towards real-time middleware for vehicular ad hoc networks
2004
Proceedings of the first ACM workshop on Vehicular ad hoc networks - VANET '04
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THE SPACE-ELASTIC MODEL Hard real-time event communication in a highly dynamic VANET is challenging. ...
This Space-Elastic Model of real-time communication is the first to directly address adaptation in the space domain to guarantee real-time constraints. ...
Real-time Communication Architecture To achieve real-time guarantees, the communication architecture used by RT-STEAM combines a proactive, mobility-aware routing and resource reservation protocol (PMRR ...
doi:10.1145/1023875.1023894
dblp:conf/mobicom/HughesMCC04
fatcat:sygf5ulfyjed7b3j43vkre2sfa
Integrated development of distributed real-time applications with asynchronous communication
2007
Proceedings of the 5th international workshop on Java technologies for real-time and embedded systems - JTRES '07
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The framework builds on top of real-time Java with an asynchronous communication model for broadcast networks and eldbusses. ...
This paper illustrates added values of an integrated development methodology for distributed real-time applications. ...
for adequate real-time, bandwidth and capacity guarantees. ...
doi:10.1145/1288940.1288959
dblp:conf/jtres/Schanne07
fatcat:4w2eracxtjeddffyehgrcgc5ay
Real-time communication in WIA-PA industrial wireless networks
2010
2010 3rd International Conference on Computer Science and Information Technology
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WIA-PA is the new Chinese industrial wireless communication standard for process automation. Its protocol is introduced and the real-time problems are analyzed. ...
To provide required real-time communication services in WIA-PA, resource reservation, priority-based CSMA/CA and queuing mechanisms are put forward for predefined periodic and non-periodic automatic tasks ...
In this paper, we will research the hard real-time mechanisms in WIA-PA protocol and networks and make WIA-PA a wireless control network for process industry. II. ...
doi:10.1109/iccsit.2010.5563532
fatcat:4c4jbrghf5hhxk5tp46ldewyzm
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