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Avoiding timing channels in fixed-priority schedulers
2008
Proceedings of the 2008 ACM symposium on Information, computer and communications security - ASIACCS '08
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A practically feasible modification to fixed-priority schedulers allows to avoid timing channels despite threads having access to precise clocks. ...
While providing similar isolation guarantees, our approach outperforms timepartitioning schedulers in terms of achieved real-time guarantees. ...
This work is in part funded by the European Commission through PASR grant 004700. ...
doi:10.1145/1368310.1368320
dblp:conf/ccs/VolpHH08
fatcat:kfamp6pdmjcxxdfl26ccoln5ba
End-to-End Delay Analysis for Fixed Priority Scheduling in WirelessHART Networks
2011
2011 17th IEEE Real-Time and Embedded Technology and Applications Symposium
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We, then, exploit the response time analysis for multiprocessor scheduling and propose a novel method for the end-to-end delay analysis of the real-time flows that are scheduled using a fixed priority ...
priority scheduling policies. ...
Fixed priority scheduling is a widely adopted real-time scheduling policy in practice for both real-time CPU scheduling and wired real-time networks such as CANs. ...
doi:10.1109/rtas.2011.10
dblp:conf/rtas/SaifullahXLC11
fatcat:jfld734msvcdfeu6fyq7cyuc5e
QoS Support for Cross-Layer Scheduling Algorithm in Wireless Networks
2016
International Journal of Science and Research (IJSR)
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Each connection is assigned with a priority, which is updated dynamically based upon its channel and service status; the connection with highest priority is scheduled every time. ...
Scheduling plays an crucial role in providing quality of service (QoS) support to multimedia communications in different kinds of wireless networks, including wireless sensor networks, cellular networks ...
priority is scheduled first each time. ...
doi:10.21275/v5i4.nov163043
fatcat:f6hrh5vrafathht3qm7qthbjqi
Schedulability Analysis under Graph Routing in WirelessHART Networks
2015
2015 IEEE Real-Time Systems Symposium
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While these mechanisms are critical for reliable communication, they introduce substantial challenges in analyzing the schedulability of real-time flows. ...
Industrial applications demand a high degree of reliability and real-time guarantees in communication. ...
In a fixed priority scheduling policy, each flow has a fixed priority, and its transmissions are scheduled based on this priority. ...
doi:10.1109/rtss.2015.23
dblp:conf/rtss/SaifullahGTSLLW15
fatcat:aqfq2zprtbdptcbrmrulji3y4a
Providing deterministic delay guarantees in ATM networks
1998
IEEE/ACM Transactions on Networking
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The end-to-end delay is bounded by the scheduler which employs a nonpreemptive rate-monotonic priority scheduling policy at each switch on the path. ...
In particular, per-packet (per-cell) delay guarantees are an important QoS requirement for real-time applications. ...
Rate-Monotonic Priority Scheduler In the rate-monotonic priority scheduler, a channel's priority is fixed according to its throughput requirement and, thus, it can be implemented with a fixed priority ...
doi:10.1109/90.748093
fatcat:c7gfg6nahncbfcuwq65wcaelja
End-to-End Communication Delay Analysis in Industrial Wireless Networks
2015
IEEE transactions on computers
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In this paper, we consider a network model based on WirelessHART, and map the scheduling of real-time periodic data flows in the network to real-time multiprocessor scheduling. ...
real-time flow in the network. ...
Fixed priority scheduling is a common class of real-time scheduling policies in practice. ...
doi:10.1109/tc.2014.2322609
fatcat:oalb4qk2wngznjofkfvni3n5vu
Real-Time Wireless Sensor-Actuator Networks for Industrial Cyber-Physical Systems
2016
Proceedings of the IEEE
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This article reviews a series of recent advances in real-time WSANs for industrial control systems: 1) real-time scheduling algorithms and analyses for WSANs; 2) implementation and experimentation of industrial ...
This paper surveys recent advances in real-time WSANs for industrial control systems. ...
In a fixed priority scheduling policy, each data flow has a fixed priority, and every transmission has the priority of its flow. ...
doi:10.1109/jproc.2015.2497161
fatcat:y5ostudalncbpooy5vkqzylpfa
A QoS Control Scheme for Voice and Data Services in cdma2000 System
[chapter]
2003
Lecture Notes in Computer Science
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The proposed scheme consists of resolving contention between admitted services, scheduling the service packets and efficiently multiplexing data blocks on physical channels according to their QoS requirements ...
It is compared with the performance of existing cdma2000 scheme in both indoor and outdoor environments. ...
In fact, a form of priority scheduling is mentioned in the RLP standard [1] . ...
doi:10.1007/978-3-540-39867-7_48
fatcat:o3e7lowc4nhmdnewjaflpkykjq
Scheduling algorithms for multiple channel wireless local area networks
2002
Computer Communications
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This paper describes algorithms for scheduling traffic in wireless data networks with multiple channels per cell. ...
The algorithms are studied for wireless networks with single priority traffic and multiple-priority traffic. ...
The frame is divided into multiple phases as shown in With multiple channels available per cell, the frame synchronization, reservation, and schedule messages are sent over a fixed channel, referred to ...
doi:10.1016/s0140-3664(02)00034-8
fatcat:d4cdn3rtv5cq3ktxyiwkkxdmve
Study on Improving the Network Life Time Maximazation for Wireless Sensor Network using Cross Layer Approach
2016
International Journal of Electrical and Computer Engineering (IJECE)
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<p>In recent the espousal of Wireless Sensor Networks has been broadly augmented in numerous divisions. ...
This paper represents analytical study for Energy efficiency by modifying Scheduling algorithm, by modifying traditional AODV routing algorithm for efficient packet transmission and by effectively using ...
Frame Scheduling in PCF Mode of 802.11 MAC
Figure 2 .Figure 3 . 23 Figure 2. Mobile Stations Allotted Time Slots for Accessing Channel During Sleep Scheduling
Figure 4 . 4 Figure 4. ...
doi:10.11591/ijece.v6i6.11208
fatcat:7nwg6uivivfqjgzwz5bqyn2cka
A separate design principle for priority-aware packet collection in industrial cyber-physical systems
2016
EURASIP Journal on Wireless Communications and Networking
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As a result, each time slot on each channel is repeatedly scheduled to sensors of different priorities by different superframes. ...
In SDP, the transmission of each priority class of sensors is separately scheduled by a multichannel superframe which fully uses the available channels. ...
Acknowledgements This work was supported in part by NSF ...
doi:10.1186/s13638-016-0572-x
fatcat:xunx4apnezedha4f3iclcnjd34
An Exact Schedulability Test for Non-Preemptive Self-Suspending Real-Time Tasks
2019
2019 Design, Automation & Test in Europe Conference & Exhibition (DATE)
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exact schedulability test for the special case of global non-preemptive fixed-priority scheduling (for either periodic or sporadic tasks). ...
By mapping the schedulability problem to the reachability problem in timed automata (TA), this paper provides the first exact schedulability test for this challenging model. ...
a global fixed-priority scheduling policy). ...
doi:10.23919/date.2019.8715111
dblp:conf/date/YalcinkayaNB19
fatcat:lvv5drr4svbwpon7w5przr3ity
Comparative Study on Priority Based QOS Aware Mac Protocols for WSN
2014
International Journal of Wireless & Mobile Networks
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The study mainly focuses on some priority based QoS protocols used in WSN and a comparison among them. ...
The study reveals that among the five mentioned protocols; QMAC, PRIMA, DB-MAC, RAP, GTS; PRIMA shows the best performance in the category of Packet Prioritization, Scheduling Scheme, Queue Type, Energy ...
Access to the channel that is maintained by the protocols is based on a schedule. Channel access is fixed to one sensor node at a time. ...
doi:10.5121/ijwmn.2014.6515
fatcat:4ufb4zaarvavdbblfoxv5ur5ha
A Cross-Layer Scheduling Algorithm With QoS Support in Wireless Networks
2006
IEEE Transactions on Vehicular Technology
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Each connection is assigned a priority, which is updated dynamically based on its channel and service status; the connection with the highest priority is scheduled each time. ...
Scheduling plays an important role in providing quality of service (QoS) support to multimedia communications in various kinds of wireless networks, including cellular networks, mobile ad hoc networks, ...
priority is scheduled first each time. ...
doi:10.1109/tvt.2006.873832
fatcat:kzgyfomjefaevpaceszjas47c4
On flow reservation and admission control for distributed scheduling strategies in IEEE802.11 wireless LAN
2003
Proceedings of the 6th international workshop on Modeling analysis and simulation of wireless and mobile systems - MSWIM '03
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However, those strategies do not support flow reservation and thus cannot guarantee QoS requirements of high priority real-time flows under overloading network traffics. ...
In this paper, we present a MAC layer flow reservation and admission control scheme for distributed scheduling strategies in the aim of achieving QoS guarantee in IEEE802.11 wireless LANs. ...
For priority-based schedulers, priorities are involved in computing backoff intervals such that flows of higher service classes have more chances to access channel than flows of lower service classes. ...
doi:10.1145/940991.941010
dblp:conf/mswim/LiPS03
fatcat:i7oap2w3nrfyfe2echt43ytpg4
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