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A cross-layer approach for designing directional routing protocol in MANETs

A cross-layer approach for designing directional routing pro...

引用

2005 IEEE Wireless Communications and Networking Conference, WCNC 2005: Broadband Wirelss for the Masses - Ready for Take-off

作者： Gossain, Hrishikesh Joshi, Tarun Cordeiro, Carlos Agrawal, Dharma P. OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH 45221-0030 United States Philips Research Wireless Communications and Networking Department Briarcliff Manor NY 10510 United States

ISBN: (纸本)0780389662

In this paper we propose a Directional Routing Protocol (DRP) for MANETs. DRP is an on-demand directional routing protocol which assumes a cross layer interaction between routing and MAC layer. The main features of DRP include an efficient route discovery mechanism, establishment and maintenance of directional routing and directional neighbor tables (DRT and DNT respectively), and novel directional route recovery mechanisms. We have implemented DRP on top of an existing MAC protocol for directional antennas and have compared its performance with the popular dynamic source routing (DSR) protocol over both omni-directional and directional antenna models. Preliminary simulation results are found to be very promising. © 2005 IEEE.

关键词： Network protocols

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MDA: an efficient directional MAC scheme for wireless ad hoc networks

MDA: an efficient directional MAC scheme for wireless ad hoc...

引用

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005.

作者： H. Gossain C. Cordeiro D.P. Agrawal OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH USA

This paper addresses the issue of deafness and hidden terminal problem in a mobile ad hoc networks (MANETs) using directional antennas. To minimize these effects, we propose a MAC protocol for directional Antennas (MDA) which employs an enhanced directional network allocation vector (NAV) scheme and, a novel technique of diametrically opposite directions (DOD) transmission of RTS and CTS. We compare MDA with IEEE 802.11 and two recently proposed directional MAC protocols and results show that MDA outperforms these protocols in the majority of scenarios investigated. We also point out that the performance does depend on the network topology and the traffic pattern

关键词： Ad hoc networks Directional antennas Media Access Protocol Deafness US Department of Defense mobile ad hoc networks Signal to noise ratio Directive antennas Transmitters mobile computing

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Challenges in utilizing aggregate logical sensor units for wireless sensory information networks

Challenges in utilizing aggregate logical sensor units for w...

引用

2005 IEEE 16th International Symposium on Personal, Indoor and mobile Radio Communications, PIMRC 2005

作者： Kumar, Anup Dhekne, P.S. Agrawal, Dharma P. Lab. CECS University of Louisville Louisville KY 40292 Computer Division Mod Lab. BARC Mumbai India OBR Research Center for Distributed and Mobile Computing ECECS University of Cincinnati Cincinnati OH 45221-0030

ISBN: (纸本)3800729091

Historically, a large number of small and cheaper sensors are deployed to form a sensor network. This paper provides rationale behind using an Aggregate Logical Sensor Unit (ALSU) as a building block in a Wireless Sensory Information network (WSIN). In this architecture, a single ALSU is composed of many off-the-shelf sensor nodes in the manner similar to the Beowulf cluster concept. The highly capable, cost effective and flexible ALSUs built in this manner from several smaller physical sensor nodes, would enable high computation power and built-in reliability for sensor applications. The objective of this paper is to provide an alternative where energy and computation is not a limiting factor in order to achieve the operational objectives of WSIN applications. This paper highlights critical issues that need to be addressed in developing a framework where each ALSU could have the capability to perform required operations as dictated by an underlying application. © 2005 IEEE.

关键词： Wireless sensor networks

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A new routing mechanism for integrating cellular networks, WLAN hot spots and MANETS

A new routing mechanism for integrating cellular networks, W...

引用

2005 IEEE 16th International Symposium on Personal, Indoor and mobile Radio Communications, PIMRC 2005

作者： Cavalcanti, Dave Cordeiro, Carlos Kumar, Anup Agrawal, Dharma OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH Philips Research USA Wireless Communications and Networking Department Briarcliff Manor NY 10510 Department of Computer Engineering and Computer Science University of Louisville Louisville KY

ISBN: (纸本)3800729091

A growing need for ubiquitous connectivity has motivated the integration of various wireless technologies such as cellular systems, WLANs and MANETs. In this paper we introduce the Integrated Routing Protocol (IRP) that exploits topology information obtained by cellular Base Stations and WLAN Access Points in the route discovery and maintenance in a heterogeneous wireless access network. IRP also provides connectivity to the cellular network and/or WLAN hotspots through the multi-hop routing by allowing out of coverage users to maintain routes to Gateway Nodes (GN). We provide a simulation study of IRP with two different link quality metrics, number of hops and a new integrated metric based on the Expected Transmission Time (ETT). Our results show that IRP improves the network coverage and capacity and allows connectivity alternatives that are not supported by other integrated solutions. © 2005 IEEE.

关键词： Routing protocols

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A cross layer MAC with explicit synchronization through intelligent feedback for multiple beam antennas

A cross layer MAC with explicit synchronization through inte...

引用

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005.

作者： V. Jain A. Gupta D. Lal D.P. Agrawal OBR Center for Distributed and Mobile Computing University of Cincinnati USA Research and Technology Center Robert Bosch Corporation USA

This paper introduces a novel cross layer medium access control protocol for multiple beam antennas to fully utilize their multiple-beam-forming capability. Our protocol, explicit synchronization via intelligent feedback (ESIF), uses feedback from neighboring nodes to synchronize data communication at multiple beams. ESIF exploits routing information to guarantee long-term fairness and minimize the energy and latency overheads. Unlike previous works on directional antennas that discuss range extension, we focus on optimal spatial reuse. Simulation results demonstrate that ESIF outperforms other on-demand access schemes based on IEEE 802.11 DCF for multiple beam antennas

关键词： Cross layer design Feedback Directional antennas Peer to peer computing Media Access Protocol Antenna arrays Access protocols Data communication Adaptive arrays Routing

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Mobility and routing management for heterogeneous multi-hop wireless networks

Mobility and routing management for heterogeneous multi-hop ...

引用

2nd IEEE International Conference on mobile Ad-hoc and Sensor Systems, MASS 2005

作者： Xie, Bin Kumar, Anup Cavalcanti, Dave Agrawal, Dharma P. Srinivasan, S. Computer Engineering and Computer Science Dept. University of Louisville Louisville KY 40292 United States Computer Information Systems University of Louisville Louisville KY 40292 United States OBR Center for Distributed Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH 45221-0030 United States

ISBN: (纸本)0780394666

This paper proposes a new Heterogeneous Multi-hop Cellular IP (MCIP) network that integrates multi-hop communication with Cellular IP. MCIP increases the coverage of the wireless network and improves the network robustness against adverse propagation phenomena by supporting communication in dead zones and areas with poor radio coverage. MCIP includes three components: location management, connection management and route reconfiguration. Location management is responsible for maintaining the location information for mobile Stations (MSs) in a local domain. Connection management establishes an initial path for data transmission and a route reconfiguration mechanism is proposed to take advantage of various multi-hop connection alternatives available based on terminal interfaces, network accessibility and topology. Our simulation results show that MCIP performs well in networks of various sizes. © 2005 IEEE.

关键词： Wireless telecommunication systems

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A credit-payment scheme for packet forwarding fairness in mobile ad hoc networks

A credit-payment scheme for packet forwarding fairness in mo...

引用

IEEE International Conference on Communications (ICC)

作者： Younghwan Yoo Sanghyun Ahn D.P. Agrawal OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH USA School of Computer Science University of Seoul Seoul South Korea

Routing protocols for mobile ad hoc networks (MANETs) have assumed that all nodes voluntarily participate in forwarding others' packets. This was a reasonable assumption because all nodes in previous MANETs belonged to a single authority. In the near future, however, a MANET may consist of nodes that belong to multiple organizations since various civilian applications are expected to appear. In this situation, mobile nodes may deliberately avoid packet forwarding to save their own energy, resulting in network partition. To make nodes volunteer in packet forwarding we suggest a payment scheme called protocol-independent fairness algorithm (PIFA). In this type of schemes, nodes need credits to transmit their own packets, and this credit can be earned by forwarding others' packets. PIFA can be utilized irrespective of the type of basic routing protocols, while previous methods are compatible only with source routing like DSR. Simulation results show that PIFA can prevent network partition and network performance degradation due to selfish nodes by inducing them to participate in forwarding packets.

关键词： Intelligent networks mobile ad hoc networks Routing protocols Sprites (computer) Carbon capture and storage mobile computing Computer networks distributed computing Computer science Partitioning algorithms

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Connectivity in multi-radio, multi-channel heterogeneous ad hoc networks

Connectivity in multi-radio, multi-channel heterogeneous ad ...

引用

IEEE International Symposium on Personal, Indoor and mobile Radio Communications (PIMRC)

作者： D. Cavalcanti H. Gossain D. Agrawal OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH USA Mesh Research and Development Group Motorola Inc. Maitland FL USA

Future wireless networks are expected to integrate heterogeneous devices equipped with multiple radios and different characteristics. Therefore, it is important to understand how these heterogeneous radios can affect connectivity and overall multi-hop network performance. In this paper, we study the connectivity of a heterogeneous ad hoc network. We consider two types of nodes: nodes equipped with a single communication interface with communication range r, and dual-mode (DM) nodes, equipped with two communication interfaces with two different communication ranges r and r f , respectively, where r f >r. We assume the radios in the DM nodes operate in two different channels. We provide a theoretical analysis of connectivity in a linear network and we present simulation results for the two-dimensional case that show the impact of DM nodes on connectivity, broadcast latency and robustness in static scenarios

关键词： Intelligent networks Ad hoc networks Delta modulation Analytical models Spread spectrum communication Robustness distributed computing Broadcasting Energy consumption Frequency

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Route recovery mechanisms for ad hoc networks equipped with switched single beam antennas

Route recovery mechanisms for ad hoc networks equipped with ...

引用

Annual Symposium on Simulation

作者： T. Joshi H. Gossain C. Cordeiro D.P. Agrawal OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH USA Wireless Communications Department Philips Research USA Briarcliff Manor NY USA

In this paper we propose a novel three phase route recovery mechanism for routing over switched single beam directional antennas. We enhance the popular dynamic source routing (DSR) protocol to the underlying directional layer and include an improved broadcast mechanism to facilitate an efficient route discovery. In the event of a link failure, our optimized directional routing protocol (DRP) proceeds in three phases to recover the route to the destination: (i) antenna beam handoff (ii) local route recovery and (iii) zonal route recovery. We have compared the performance of DRP with the DSR protocol over both omnidirectional and directional antenna models in conditions of varying network mobility. Our results clearly indicate that DRP is robust to link failures even in highly mobile scenarios.

关键词： Ad hoc networks Directional antennas Routing protocols Deafness Communication switching Media Access Protocol Signal to noise ratio Network topology mobile computing distributed computing

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A cross-layer approach for designing directional routing protocol in MANETs

A cross-layer approach for designing directional routing pro...

引用

IEEE Conference on Wireless Communications and Networking

作者： H. Gossain T. Joshi C. Cordeiro D.P. Agrawal OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH USA Wireless Communications and Networking Department Philips Research Briarcliff Manor NY USA

In this paper, we propose a directional routing protocol (DRP) for MANETs. DRP is an on-demand directional routing protocol which assumes a cross layer interaction between routing and MAC layer. The main features of DRP include an efficient route discovery mechanism, establishment and maintenance of directional routing and directional neighbor tables (DRT and DNT, respectively), and novel directional route recovery mechanisms. We have implemented DRP on top of an existing MAC protocol for directional antennas and have compared its performance with the popular dynamic source routing (DSR) protocol over both omni-directional and directional antenna models. Preliminary, simulation results are found to be very promising.

关键词： Routing protocols mobile ad hoc networks Media Access Protocol Directional antennas Intelligent networks Cross layer design Access protocols Network topology mobile computing Computer networks

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