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Sufficient Rate Constraints for QoS Flows in Ad-Hoc Networks

by Rajarshi Gupta, John Musacchio, Jean Walrand
"... The capacity of an arbitrary ad-hoc network is difficult to estimate due to interference between the links. We use a conflict graph that models this interference relationship to determine if a set of flow rates can be accommodated. Using the cliques (complete subgraphs) of the conflict graph, we der ..."
Abstract - Cited by 32 (4 self) - Add to MetaCart
The capacity of an arbitrary ad-hoc network is difficult to estimate due to interference between the links. We use a conflict graph that models this interference relationship to determine if a set of flow rates can be accommodated. Using the cliques (complete subgraphs) of the conflict graph, we

Sufficient Conditions for Flow Admission Control in Wireless Ad-hoc Networks ∗

by Bechir Hamdaoui, Parameswaran Ramanathan
"... Wireless nodes within the same vicinity contend with each other for accessing the shared wireless medium. The contention constraints for sharing the medium depend on the medium access control (MAC) protocol that administers the accessibility of the network. In a previous work, we derived a set of su ..."
Abstract - Cited by 5 (1 self) - Add to MetaCart
and admission control for QoS routing. We also evaluate, compare and discuss the performance of the derived sufficient conditions through simulation studies. I.

Routing and Broadcasting in Ad-Hoc Networks

by Der Philosophisch-naturwissenschaftlichen Fakultät, Der Universität Bern, Marc Heissenbüttel, Prof Dr, T. Braun, Der Philosophisch-naturwissenschaftlichen Fakultät, Der Universität Bern, Marc Heissenbüttel, Von Frutigen, Prof Dr, T. Braun
"... I would like to thank Prof. Dr. Torsten Braun, head of the Computer Network and Distributed Systems group (RVS), for supervising this work and for his insightful advises. Prof. Dr. Torsten Braun encouraged and motivated me to publish my research results and he provided me the opportunity to present ..."
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I would like to thank Prof. Dr. Torsten Braun, head of the Computer Network and Distributed Systems group (RVS), for supervising this work and for his insightful advises. Prof. Dr. Torsten Braun encouraged and motivated me to publish my research results and he provided me the opportunity to present

1A Reservation Scheme Satisfying Bandwidth QoS Constraints for Multirate Ad-hoc Networks

by Michael Voorhaen, Chris Blondia
"... Ad-hoc NETworks (MANET) has been a research topic in the last years. In this paper we describe a QoS reserva-tion mechanism for Multirate Ad-hoc Networks. By mul-tirate we refer to those networks where the mobile nodes can dynamically switch between several link rates. This al-lows the mobile nodes ..."
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Ad-hoc NETworks (MANET) has been a research topic in the last years. In this paper we describe a QoS reserva-tion mechanism for Multirate Ad-hoc Networks. By mul-tirate we refer to those networks where the mobile nodes can dynamically switch between several link rates. This al-lows the mobile nodes

On supporting reliable QoS in multi-hop multi-rate mobile ad hoc networks

by Ming Li, Æ B. Prabhakaran
"... Abstract Due to complicated situations such as node/link interference and traffic load, quality of service support in multi-hop multi-rate ad hoc networks remains a challeng-ing issue. Furthermore, when mobility is present, because of frequent route change, it is even more difficult to maintain high ..."
Abstract - Cited by 3 (3 self) - Add to MetaCart
high level performance for existing real-time flows that may not tolerate serious performance degrada-tion. In this paper, we focus on the issue of providing sufficient QoS in networks with moderate to high node mobility. We first introduce route available bandwidth (RAB), a major index for prediction

QoS control for sensor networks

by Ranjit Iyer, Leonard Kleinrock , 2003
"... Sensor Networks are distributed networks made up of small sensing devices equipped with processors, memory, and short-range wireless communication. They differ from conventional computer networks in that they have severe energy constraints, redundant low-rate data, and a plethora of information flo ..."
Abstract - Cited by 54 (0 self) - Add to MetaCart
flows. Many aspects of sensor networks such as routing, preservation of battery power, adaptive self-configuration, etc., have already been studied in previous papers [e.g., 1, 2, 3]. However, to the best knowledge of the authors, the area of sensor network Quality of Service (QoS) remains largely open

QoS constrained, Cooperative and Opportunistic Transmission for Rate Adaptive Ad Hoc Networks

by Qing Chen, Qian Zhang, Zhisheng Niu
"... Abstract — The recent researches in wireless networks prompt the opportunistic transmission that exploiting channel fluctua-tions to improve the overall system performance. In wireless ad hoc networks, nodes may have packets destined to multiple neighboring nodes. We consider an opportunistic schedu ..."
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as an optimization problem which maximizes the overall network performance while sat-isfying QoS constraints of individual flows. We also proposed COS, a distributed Cooperative and Opportunistic Scheduling algorithm, which modifies IEEE 802.11 protocol to implement the optimal scheduling policy by introducing

Resource Allocation for QoS Provisioning in Wireless Ad Hoc Networks

by Mung Chiang, Daniel ONeill, David Julian, Stephen Boyd - Proc. IEEE Globecom , 2001
"... For wireless ad hoc networks with multihop transmissions and Rayleigh fading, this paper maximizes the overall system throughput subject to QoS constraints on power, probability of outage, and data rates. Formulations are also given which minimize delay and optimize network resources in a wireless a ..."
Abstract - Cited by 6 (1 self) - Add to MetaCart
For wireless ad hoc networks with multihop transmissions and Rayleigh fading, this paper maximizes the overall system throughput subject to QoS constraints on power, probability of outage, and data rates. Formulations are also given which minimize delay and optimize network resources in a wireless

Design of an efficient QoS architecture (DEQA) for mobile ad hoc networks

by R. Mynuddin Sulthani, D. Sreenivasa Rao , 2009
"... With the increasing widespread use of wireless technologies, Quality of service (QoS) provisioning in ad hoc networks remains a challenging task. Good scalability of the QoS architecture is necessary, as the size of the ad hoc networks is huge. In this paper we propose a design of an efficient QoS a ..."
Abstract - Cited by 6 (0 self) - Add to MetaCart
network size and mobility. By simulation results, it has been shown that, this architecture allows us to provide reliable QoS in ad-hoc networks increases the available bandwidth, performs load balancing in the network and increases lifetime.

Adaptive QoS Routing by Cross-Layer Cooperation in Ad Hoc Networks

by C H. Sun, H. D. Hughes, Hongxia Sun, Herman D. Hughes , 2005
"... QoS provisioning is a complex and challenging issue in mobile ad hoc networks, especially when there are multiple QoS con-straints. In this paper, we propose an adaptive QoS routing scheme supported by cross-layer cooperation in ad hoc networks. The cross-layer mechanism provides up-to-date local Qo ..."
Abstract - Cited by 2 (0 self) - Add to MetaCart
QoS provisioning is a complex and challenging issue in mobile ad hoc networks, especially when there are multiple QoS con-straints. In this paper, we propose an adaptive QoS routing scheme supported by cross-layer cooperation in ad hoc networks. The cross-layer mechanism provides up-to-date local
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