Dynamic Path Reconfiguration Among Hybrid FSO/RF Nodes

Gurumani, S.; Moradi, Hassan; Refai, Hazem H.; LoPresti, Peter G.; Atiquzzaman, Mohammed

doi:10.1109/glocom.2008.ecp.537

Cited by 16 publications

(10 citation statements)

References 7 publications

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“…In [6], authors propose a hybrid network prototype using free space optical link for data transmission only, and RF link primarily for control signals as well as serving as a backup for data transmission whenever FSO link is unavailable. This scheme of dynamic path reconfiguration is shown to have high performance in terms of reconfiguration time and end-to-end delay.…”

Section: Related Workmentioning

confidence: 99%

Algebraic connectivity of degree constrained spanning trees for FSO networks

Zhou

Babaei

Mao

et al. 2013

2013 IEEE International Conference on Communications (ICC)

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Free space optical (FSO) networking is an attractive technology with applications ranging from high capacity military communications to "Last-mile" broadband access solutions. Topology control is an important problem in FSO networks. The problem of building a spanning tree when number of transceivers on each base station is limited, in FSO networks, is NP-hard. What makes the problem even more challenging is to maximize the algebraic connectivity of the spanning tree. In this paper, we develop an initially configuring, or bootstrapping, algorithm which produces a degree constrained spanning tree with high algebraic connectivity and also high average edge weight, where the edge weight in the graph represents the FSO link reliability. We also develop a fast reconfiguration algorithm when one or more links fail in the FSO network. Our algorithms outperform alternative schemes in improving both algebraic connectivity and average edge weight. The robustness of the resulting topology of FSO networks is significantly improved.

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Section: Related Workmentioning

confidence: 99%

Algebraic connectivity of degree constrained spanning trees for FSO networks

Zhou

Babaei

Mao

et al. 2013

2013 IEEE International Conference on Communications (ICC)

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“…Path reconfiguration to improve network availability in fading environments is discussed in [5] for different assumptions on how much channel state information is available. They showed that the reconfiguration probability is not necessarily increased [6]. Lifetime studies of RF nodes when a supporting FSO network is added were presented in [7].…”

Section: Introductionmentioning

confidence: 98%

Fair resource allocation for hybrid FSO/RF network

Tang

Brandt-Pearce

2010

2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers

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Various wireless networks have emerged to meet the growing demand for broadband wireless services. However, wireless services are fundamentally limited in bandwidth because of the scarcity of RF spectral resources. One alternative resource is the optical spectrum that can provide Gbps connectivity for little cost and no interference. This paper addresses the design of joint free space optical (FSO) system and RF system in hybrid FSO/RF networks. In such networks, existing resources of the RF network can be reallocated due to the added resources available from the FSO network. We formulate and solve this resource allocation problem subject to fairness constraints. The results show that adding optical transceivers to nodes in RF mesh networks can significantly enhance the total network capacity.

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“…The integration of wireless and wired networks has been studied and is still being studied in the community for specific networks. The solutions proposed are mainly network specific adaptations and do not embrace the mutual integration of generic networks [3], [10]- [12]. For instance, Wireless LAN (WLAN) and cellular network integration studies concentrate on the extension of cellular network coverage through WLAN access points [13]- [15], and other work on throughput capacity assumes that base stations are connected by a high-bandwidth wired network and act as relays for ad-hoc wireless nodes [16], [17].…”

Section: Introductionmentioning

confidence: 99%

Exploring the Benefits of Symbiotic Routing

Karaoglu

Demirkol

Heinzelman

2011

2011 Proceedings of 20th International Conference on Computer Communications and Networks (ICCCN)

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It is increasingly common to see multiple wireless networks existing in the same environment, being accessed by devices of the individual networks as well as by "hybrid" devices capable of communicating on multiple networks. Typically these networks do not cooperate or share resources, resulting in suboptimal network performances. The efficiency of such networks can be increased by exploiting hybrid nodes to enable network interactions that allow cross-network performance optimizations and cross-network information and service sharing. Such mutually beneficial interactions of the networks is referred to as symbiotic networking. In this paper, we investigate the potential performance gains of such interactions for the routing protocols and the effect of the network parameters on these potential gains. We use both simulation and mathematical frameworks that model the routing performances of both symbiotic and independent networking to quantify the routing benefits of symbiotic networking. Our results show that symbiotic networking can provide vital support to co-located networks, which is especially important in resource-constrained networks such as wireless sensor networks or mobile ad hoc networks.

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Dynamic Path Reconfiguration Among Hybrid FSO/RF Nodes

Cited by 16 publications

References 7 publications

Algebraic connectivity of degree constrained spanning trees for FSO networks

Algebraic connectivity of degree constrained spanning trees for FSO networks

Fair resource allocation for hybrid FSO/RF network

Exploring the Benefits of Symbiotic Routing

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