Multihop Cellular Networks: Potential Gains, Research Challenges, and a Resource Allocation Framework

Le, Long Bao; Hossain, Ekram

doi:10.1109/mcom.2007.4342859

Cited by 225 publications

(90 citation statements)

References 12 publications

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“…However, their primary accent is on seamless connectivity in environments where heterogeneous wireless technologies are integrated. For instance, [8] aims at extending cellular networks via relay stations to increase coverage; [9,10], instead, specifically address client mobility management in heterogeneous multi-hop networks.…”

Section: Experimental Validation and Performance Resultsmentioning

confidence: 99%

Internet Connectivity Sharing in Multi-path Spontaneous Networks: Comparing and Integrating Network- and Application-Layer Approaches

Bellavista

Giannelli

2010

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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Abstract. Spontaneous networking, where wireless mobile nodes opportunistically exploit multi-hop ad-hoc paths toward peers to share content and available resources in an impromptu way, has recently received growing interest from both industry and academia. In this paper, we specifically focus on the notable case of sharing connectivity to the traditional Internet, with the general goal of an overall better exploitation of connectivity resources, often underutilized as the population of wireless devices grows, as well as their local computing/memory/bandwidth resources. In particular, here we show how our novel middleware, called RAMP, can exploit both networkand application-layer solutions to dynamically manage mission-oriented paths toward peers offering Internet connectivity. Thanks to our middleware-level cross-layer approach, RAMP can dynamically select and combine different solutions for multi-hop multi-path ad-hoc path formation and can take proper management decisions based on run-time context. The reported results demonstrate the suitability of dynamically integrating network-and application-layer approaches to achieve the best overhead/performance tradeoff depending on specific application requirements.

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Section: Experimental Validation and Performance Resultsmentioning

confidence: 99%

Internet Connectivity Sharing in Multi-path Spontaneous Networks: Comparing and Integrating Network- and Application-Layer Approaches

Bellavista

Giannelli

2010

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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“…릴레이 시스템은 광대역 이동 셀룰러 망의 커버 리지를 확장하고 수율을 증대시킬 수 있는 요소 기 술로서 많은 주목을 받아 왔으며 [1,2] , 이러한 릴레이 시스템의 효용성을 분석하기 위해 많은 연구가 진 행되어 왔다 [3][4][5][6] . 에 영향을 받는 환경 [3,4] , 라이시안 페이딩(Rician fading)과 AWGN에 영향을 받는 환경 [5] , 그리고 Nakagami-m페이딩과 AWGN에 영향을 받는 환경 [6] 에 은 평균 수율의 합 관점에서 이득을 얻을 수 있음 을 보였다 [7] .…”

Section: ⅰ 서 론unclassified

Performance Bounds of an Amplify-and-Forward Relay System with Multiple Rayleigh-faded Co-channel Interferers

Ryu¹,

Kang²

2012

The Journal of Korea Information and Communications Society

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Key Words : Interference-limited system, amplify-and-forward relaying, outage probability, average bit error rate ABSTRACTIn this paper, we consider a 2-hop relay system where both the relay and destination nodes suffer from the arbitrary number of co-channel interferers. More specifically, assuming that the relay and access channels as well as interference channels are all subject to Rayleigh fading, we derive an exact closed-form expression for outage probability of the amplify-and-forward (AF) relay system, and furthermore compute its upper and lower bounds.Based on these bounds, we derive the upper and lower bounds on the average bit error rate (BER) of the AF relay system. We also confirm the accuracy of our derivation by investigating the performance gap between the performance bounds under consideration and simulation results.

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“…Another interesting characteristic of WMNs is the fact that the network coverage increases with the number of gateways and users [2]. These features are driving the evolving of conventional cellular networks into Multihop Cellular Networks aiming at the enhancement of coverage, data rates, QoS performance in terms of call blocking probability, bit error rate, as well as QoS fairness for different users [3].…”

Section: Introductionmentioning

confidence: 99%

Overlay Cognitive Radio in Wireless Mesh Networks

Pereira¹,

Souza²,

Pellenz³

2009

Wireless Pers Commun

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In this paper we apply the concept of overlay cognitive radio to the communication between nodes in a wireless mesh network. Based on the overlay cognitive radio model, it is possible to have two concurrent transmissions in a given interference region, where usually only one communication takes place at a given time. We analyze the cases of wireless mesh networks with regular and random topologies. Numerical results show that considerable network capacity gains can be achieved.

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Multihop Cellular Networks: Potential Gains, Research Challenges, and a Resource Allocation Framework

Cited by 225 publications

References 12 publications

Internet Connectivity Sharing in Multi-path Spontaneous Networks: Comparing and Integrating Network- and Application-Layer Approaches

Internet Connectivity Sharing in Multi-path Spontaneous Networks: Comparing and Integrating Network- and Application-Layer Approaches

Performance Bounds of an Amplify-and-Forward Relay System with Multiple Rayleigh-faded Co-channel Interferers

Overlay Cognitive Radio in Wireless Mesh Networks

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