Academic literature on the topic 'Connectivity-aware'

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Journal articles on the topic "Connectivity-aware"

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Duari, Swagata, and Vasudha Bhatnagar. "sCAKE: Semantic Connectivity Aware Keyword Extraction." Information Sciences 477 (March 2019): 100–117. http://dx.doi.org/10.1016/j.ins.2018.10.034.

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Ghafoor, Huma, Insoo Koo, and Nasir-ud-Din Gohar. "Neighboring and Connectivity-Aware Routing in VANETs." Scientific World Journal 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/789247.

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A novel position-based routing protocol anchor-based connectivity-aware routing (ACAR) for vehicular ad hoc networks (VANETs) is proposed in this paper to ensure connectivity of routes with more successfully delivered packets. Both buses and cars are considered as vehicular nodes running in both clockwise and anticlockwise directions in a city scenario. Both directions are taken into account for faster communication. ACAR is a hybrid protocol, using both the greedy forwarding approach and the store-carry-and-forward approach to minimize the packet drop rate on the basis of certain assumptions. Our solution to situations that occur when the network is sparse and when any (source or intermediate) node has left its initial position makes this protocol different from those existing in the literature. We consider only vehicle-to-vehicle (V2V) communication in which both the source and destination nodes are moving vehicles. Also, no road-side units are considered. Finally, we compare our protocol with A-STAR (a plausible connectivity-aware routing protocol for city environments), and simulation results in NS-2 show improvement in the number of packets delivered to the destination using fewer hops. Also, we show that ACAR has more successfully-delivered long-distance packets with reasonable packet delay than A-STAR.
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Jeong, Rae-Jin, and Kang-Whan Lee. "Context-aware Connectivity Analysis in Delay Tolerant Networks." Procedia Computer Science 63 (2015): 177–82. http://dx.doi.org/10.1016/j.procs.2015.08.330.

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Tamboli, Neelofer, and Mohamed Younis. "Coverage-aware connectivity restoration in mobile sensor networks." Journal of Network and Computer Applications 33, no. 4 (July 2010): 363–74. http://dx.doi.org/10.1016/j.jnca.2010.03.008.

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ZHANG, Li-Feng, Bei-Hong JIN, and Wei ZHUO. "On Connectivity-Aware and Reliable Data Dissemination in VANETs." Chinese Journal of Computers 36, no. 4 (March 13, 2014): 701–15. http://dx.doi.org/10.3724/sp.j.1016.2013.00701.

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Haider, Ammar, Iqbal Gondal, and Joarder Kamruzzaman. "Social-connectivity-aware vertical handover for heterogeneous wireless networks." Journal of Network and Computer Applications 36, no. 4 (July 2013): 1131–39. http://dx.doi.org/10.1016/j.jnca.2013.01.010.

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Liu, Xuxun. "Survivability-Aware Connectivity Restoration for Partitioned Wireless Sensor Networks." IEEE Communications Letters 21, no. 11 (November 2017): 2444–47. http://dx.doi.org/10.1109/lcomm.2017.2699174.

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Ibrahim, Ahmed S., Karim G. Seddik, and K. J. Ray Liu. "Connectivity-aware network maintenance and repair via relays deployment." IEEE Transactions on Wireless Communications 8, no. 1 (January 2009): 356–66. http://dx.doi.org/10.1109/t-wc.2009.080045.

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Zhao, Xin, Yaodong Zhang, Chunxiao Jiang, Jian Yuan, and Jiannong Cao. "Mobile-Aware Topology Control Potential Game: Equilibrium and Connectivity." IEEE Internet of Things Journal 3, no. 6 (December 2016): 1267–73. http://dx.doi.org/10.1109/jiot.2016.2587102.

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Hu, Jiafeng, Beihong Jin, Fusang Zhang, Zhaoyang Wang, and Yuwei Yang. "Towards connectivity-aware deployment and adjustment for roadside units." International Journal of Autonomous and Adaptive Communications Systems 9, no. 1/2 (2016): 119. http://dx.doi.org/10.1504/ijaacs.2016.075390.

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Dissertations / Theses on the topic "Connectivity-aware"

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Hultman, Tim. "Signal-Aware Route Planning." Thesis, Linköpings universitet, Programvara och system, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-128101.

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Modern vehicles have an increasing number of advanced features requiring network coverage in order to function properly. In order to facilitate the requirements of such features and allow more advanced applications, we consider the possibility of planning routes that take signal strength into consideration. Previous work have shown the relationship between TCP throughput/goodput and signal strength. In this thesis signal-aware route planning is presented, implemented, and validated. Crowd-sourced map and signal data (3G) from two sources is used for building a signal coverage map. The signal and map data is validated in a field experiment, where routes were travelled while measuring the signal strength. The field experiment showed gains in signal characteristics when deviating from the shortest possible path. The average signal strength increased by 11 dBm between algorithms and the shortest possible path. Lastly, routes were planned for all possible sources and destinations in a given urban area. The results of this calculation confirms the patterns found in the field experiment.
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Gad, Mahmoud M. "Connectivity-Aware Routing Algorithms for Cognitive Radio Networks." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32353.

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The increased demand on wireless applications, coupled with the current inefficiency in spectrum usage, mandate a new communication paradigm shift from fixed spectrum assignment to dynamic spectrum sharing which can be achieved using the cognitive radio technology. Cognitive radio allows unlicensed secondary nodes to form communication links over licensed spectrum bands on an opportunistic basis which increases the spectrum management efficiency. Cognitive radio networks (CRN), however, impose unique challenges due to the fluctuation in the available spectrum as well as the diverse quality of service requirements. One of the main challenges is the establishment and maintenance of routes in multi-hop CRNs. In this thesis, we critically investigate the problem of routing in multi-hop CRNs. The main objective of this research is to maximize network connectivity while limiting routing delay. We developed a general connectivity metric for single-band and multi-band CRNs based on the properties of the Laplacian matrix eigenvalues spectrum. We show through analytical and simulation results that the developed metric is more robust and has lower computational complexity than the previously proposed metrics. Furthermore, we propose a new position-based routing algorithm for large scale CRNs which significantly reduces the routing computational complexity with negligible performance degradation compared to the traditional full node search algorithm. In addition, the connectivity metric developed in this thesis is used to develop a connectivity-aware distributed routing protocol for CRNs. Finally, we use a commodity cognitive radio testbed to demonstrate the concept of CR Wi-Fi networks.
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Shah, Vijay K. "A DIVERSE BAND-AWARE DYNAMIC SPECTRUM ACCESS ARCHITECTURE FOR CONNECTIVITY IN RURAL COMMUNITIES." UKnowledge, 2019. https://uknowledge.uky.edu/cs_etds/82.

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Ubiquitous connectivity plays an important role in improving the quality of life in terms of economic development, health and well being, social justice and equity, as well as in providing new educational opportunities. However, rural communities which account for 46% of the world's population lacks access to proper connectivity to avail such societal benefits, creating a huge "digital divide" between the urban and rural areas. A primary reason is that the Information and Communication Technologies (ICT) providers have less incentives to invest in rural areas due to lack of promising revenue returns. Existing research and industrial attempts in providing connectivity to rural communities suffer from severe drawbacks, such as expensive wireless spectrum licenses and infrastructures, under- and over-provisioning of spectrum resources while handling heterogeneous traffic, lack of novel wireless technologies tailored to the unique challenges and requirements of rural communities (e.g., agricultural fields). Leveraging the recent advances in Dynamic Spectrum Access (DSA) technologies like wide band spectrum analyzers and spectrum access systems, and multi-radio access technologies (multi-RAT), this dissertation proposes a novel Diverse Band-aware DSA (d-DSA) network architecture, that addresses the drawbacks of existing standard and DSA wireless solutions, and extends ubiquitous connectivity to rural communities; a step forward in the direction of the societal and economic improvements in rural communities, and hence, narrowing the "digital divide" between the rural and urban societies. According to this paradigm, a certain wireless device is equipped with software defined radios (SDRs) that are capable of accessing multiple (un)licensed spectrum bands, such as, TV, LTE, GSM, CBRS, ISM, and possibly futuristic mmWaves. In order to fully exploit the potential of the d-DSA paradigm, while meeting heterogeneous traffic demands that may be generated in rural communities, we design efficient routing strategies and optimization techniques, which are based on a variety of tools such as graph modeling, integer linear programming, dynamic programming, and heuristic design. Our results on realistic traces in a large variety of rural scenarios show that the proposed techniques are able to meet the heterogeneous traffic requirements of rural applications, while ensuring energy efficiency and robustness of the architecture for providing connectivity to rural communities.
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Lopes, Roberto Rigolin Ferreira. "Uma abordagem ciente de contexto e embasada por feedbacks para o gerenciamento de handovers em ambientes NGN." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-05092012-143719/.

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A evolução da computação móvel melhora a capacidade de comunicação e colaboração das pessoas. Os principais pilares desta transformação são: o desenvolvimento e produção de dispositivos móveis com capacidade multimídia e equipados com duas ou mais interfaces de rede, a disponibilidade de conectividade sem fio ubíqua e a popularização de aplicações sociais online. As redes sociais online merecem destaque pelas funcionalidades que permitem a criação e compartilhamento de conteúdo digital dentro de círculos sociais, também chamado de mídia social. Serviços na web anexam a localização geográfica do dispositivo ao conteúdo digital, criando as chamadas mídias sociais baseadas em localização. Equipadas com seus telefones e tablets, as pessoas estão criando e consumindo mídias sociais em qualquer lugar. Entretanto, é um desafio manter tais dispositivos móveis conectados nos ambientes de rede sem fio atuais e de próxima geração e.g., múltiplos provedores de acesso e múltiplas tecnologias de comunicação. Pesquisas recentes propõem componentes para o gerenciamento de conectividade sem fio que fazem uso simultâneo do contexto de conectividade atual e de um conjunto destes dados coletados no passado. Tais componentes são preditores de mobilidade, mecanismos de handover ou gerenciadores de mobilidade que utilizam dados de contexto de conectividade de forma particular para atingir seus propósitos. Na presente investigação, propomos uma metodologia que orquestra os principais componentes de gerenciamento de conectividade em um laço retro alimentado. Argumentamos que a coleta de dados de contexto de conectividade pode ser projetada como um sistema de sensoreamento, cujo sensores são as interfaces de rede sem fio. Como parte deste sistema de sensoriamento, os círculos sociais podem assistir o gerenciamento de conectividade compartilhando dados de contexto de conectividade. A ideia central é utilizar serviços baseados em localização para compartilhar dados de contexto de conectividade dentro dos círculos sociais. Desta forma, as redes sociais online adicionam escala para o sistema e permite colaboração em volta de dados de contexto recentes, locais, personalizados e sociais. O objetivo é melhorar experiências de conectividade sem fio e.g., métricas de QoS (Quality of Service) como: vazão, latência e qualidade do sinal. Relatamos como os dados de contexto de conectividade são manipulados com um modelo baseado em grafos e métricas como: intensidade do vértice e grau centralidade. Com isso, identificamos áreas com alta densidade de handovers, definimos a reputação dos usuários e revelamos a cobertura das redes. Resultados de experimentos mostram que a colaboração pode melhorar métricas de QoS de ~18 a ~30% se comparado ao uso de um preditor de mobilidade ou um sistema operacional moderno, respectivamente. Esta discussão se desdobra com foco na viabilidade da solução em termos de sobrecarga de armazenamento e consumo de energia. Os promissores resultados experimentais indicam que nossa solução pode melhorar experiências de conectividade sem fio de usuários móveis
The evolution of mobile computing improves communication and collaboration among people. The main pillars of this transformation are: the development and production of mobile devices with multimedia capabilities and equipped with two or more network interfaces, the availability of ubiquitous wireless connectivity and the popularity of online social applications. Online social networks noteworthy features that allow for the creation and sharing of digital content within social circles, also called textit Social Media. Web Services attach the geographic location of the device to the digital content, creating the so-called textit location-based social media. Equipped with their phones and tablets, people are creating and consuming social media anywhere. However, it is a challenge to keep such mobile devices connected in current and next generation wireless network environments textit e.g., multiple ISPs (Internet Service Provider) and multiple communication technologies. Recent researches proposes components for managing wireless connectivity that make simultaneous use of the current and past connectivity context data. Such components are mobility predictors, handovers mechanisms or mobility managers that use connectivity context data in a particular way to achieve its purposes. In this research, we propose feasiable a methodology that orchestrates the main components of the connectivity management in a feedback loop. We argue that the process of gathering connectivity context data can be designed as a sensing system, whose sensors are wireless network interfaces. As part of this sensing system, the social circles may assist the management of connectivity by sharing connectivity context data. The main idea is to use location-based services to share connectivity context data within social circles. Thus, online social networks add scale to the system and enables collaboration around recent, local, and social context data. The goal is to enhance wireless connectivity experiences in terms of QoS ( textit Quality of Service) metrics textit e.g., throughput, latency and signal quality. We report how this data is handled using complex networks metrics e.g., vertexs strength and centrality degree, to identify high density handover areas, define the mobile users reputation and to reveal the networks coverage. Real experiments showed that collaboration can improve QoS metrics from ~18 to ~30% if compared to just use a mobility predictor or a modern operational system, respectively. The discussion unfolds with focus on the collaborations efficiency as function of time, number of users, discovered area size and mobility patterns. The promising experimental results indicate that our solution can enhance mobile users wireless connectivity experiences
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Mhlanga, Martin Mafan. "Towards the design of an energy-aware path selection metric for IEEE 802.11s wireless mesh network." Thesis, University of Zululand, 2012. http://hdl.handle.net/10530/1058.

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Submitted in accordance with the requirements for the degree of Master of Arts in Communication Science at the University of Zululand, South Africa, 2012.
It is everyone’s dream to have network connectivity all the time. This dream can only be realised provided there are feasible solutions that are put in place for the next generation of wireless works. Wireless Mesh Networking (WMN) is therefore seen as a solution to the next generation of wireless networks because of the fact that WMNs configures itself and it is also self healing. A new standard for WMNs called the IEEE 802.11s is still under development. The protocol that is used by the IEEE 802.11s for routing is called Hybrid Wireless Mesh Protocol (HWMP). The main purpose of HWMP is to perform routing at layer-2 of the OSI model also referred to as the data link layer (DLL). Layer-2 routing is also referred to as the mesh path selection and forwarding. Devices that are compliant to the IEEE 802.11s standard will be able to use this path selection protocol. Devices that are manufactured by different vendors will therefore be interoperable. Even though significant efforts have gone into improving the performance of HWMP, the protocol still faces a lot of limitations and the most limiting factor is the small or restricted energy of the batteries in a wireless network. This is because of the assumption that mesh nodes that are deployed in urban areas tend to have no energy constraints while WMN nodes deployed in rural faces serious energy challenges. The latter relies on batteries and not on electricity supply which powers the WMN nodes in urban areas. This work, therefore, explores further the current trends towards maximising the network lifetime for the energy constrained networks. Hence the goal of this study is to design a path selection algorithm that is energyaware and optimising for the IEEE 802.11s based HWMP. The main idea is that paths with enough energy for transmission must be selected when transmitting packets in the network. Therefore, a simulation using NS-2 was carried out to assess the network performance of the proposed EAPM metric with the other metrics that have been analysed in literature including ETX. ETX has been used in WMNs but was not developed specifically for mesh. In conclusion, EAPM conserves more energy than the Multimetric, airtime link metric and lastly ETX. The simulation experiments show that EAPM optimises the energy used in the network and as a result EAPM has a prolonged network lifespan when comparing it to the rest of the metrics evaluated in this study. The results also revealed that the newly proposed EAPM exhibits superior performance characteristics even with regard to issues like end-to-end delay and packet delivery ratio.
CSIR Meraka Institute
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Copeland, Rebecca. "Enterprise context‐aware policy solutions for prioritizing service requests and mitigating risk in communications." Thesis, Evry, Institut national des télécommunications, 2014. http://www.theses.fr/2014TELE0021/document.

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Cette thèse propose que les entreprises puissent être maîtres de leur politique de connexion, en se basant sur des objectifs métier et en utilisant la connaissance interne qu’elles ont de leurs usagers et de tâches, et qu’elles les transmettent vers les opérateurs réseau. L’eCAPS (enterprise Context Aware Policy System) proposé permet aux organisations de différencier les activités professionnelles et non-professionnelles engendrées par les usagers BYOD (Bring Your Own Device) et ainsi de mettre en œuvre des politiques de décision pour les ressources, les niveaux de priorité et même le choix du réseau d’accès. En étendant un moteur context‐aware pour évaluer le contexte de risque lié aux requêtes de connectivité, l’entreprise doit pouvoir déterminer les actions relatives aux requêtes de services à haut risque tout en prenant en compte l’impact métier. La solution proposée utilise des extensions des standards 3GPP pour permettre à l’entreprise d’agir comme un MVNO (Mobile Virtual Network Operator) ou un Sponsor de service data. Ainsi, la proposition de la fonctionnalité ‘Defer‐Back’ facilite le transfert d’utilisations personnelles vers l’opérateur de réseau, et ce, en accord avec les souhaits des utilisateurs. Les profils de contexte sont évalués suivant un modèle Business et Risque. Ce modèle calcule les valeurs des attributs de Crédibilité des sources, qui sont estimées en fonction de leur caractéristiques comme la confiance (fiabilité, stabilité des données) , la précision (gestion des erreurs) et la précision (résolution et proximité). Les politiques enterprise sont appliquées via un système de priorité multi‐niveau adaptable, combinant ainsi observations et préférences. Un nouvel algorithme (Cedar: Corroborative Evidential Diminishing Aggregation Rating) est proposé pour définir et agréger une ‘évidence’. Il augmente proportionnellement les attributs concordants et diminue les attributs non‐concordants. Cedar satisfait un grand de besoins et surperforme les méthodes traditionnelles, en particulier en ce qui concerne sa prise en compte de l’incertitude et des conflits. La solution multi‐facette proposée eCAPS donne lieu à un grand nombre d’applications, dont quatre sont décrites dans la thèse. De plus, l’étude de cas présentée ‘MNVO Automotive’ donne un plus de détail sur un cas particulier nécessitant la fusion de politiques parmi plusieurs parties‐prenantes. L’approche proposée, l’Arbre de Crédibilité Cedar’, qui intègre agrégation corroborative et mesure de la crédibilité, devrait avoir un impact significatif dans le domaine, en particulier sur le contexte comportemental et sur le diagnostique
This thesis suggests that the enterprise should determine its own connectivity policies and convey them to the network carrier. This allows selecting service delivery options based on business goals, using corporate internal knowledge of users and tasks. The proposed eCAPS (enterprise Context Aware Policy System) allows organizations to distinguish between business and personal requests that are generated by BYOD (Bring Your Own Device) users. This enables enterprises to make policy decisions about resourcing, priority levels, automatic funding and even choice of access networks. By extending the model to evaluated risks, the enterprise could determine mitigating actions for high risk service requests, moderated by business priorities. The network solution utilizes extended 3GPP interfaces, to enable the enterprise to act as a Mobile Virtual Network Operator (MVNO) or as a Sponsor of data services. The proposed ‘Defer‐Back’ feature facilitates deferring personal usage back to the carrier, to be treated as a personal service. The solution contains a Business and Risk model that determines the profile of each service request. This model computes attributes’ inherent values from the Credibility of their sources, which is estimated by their digital characteristics, such as confidence (reliability, data stability), accuracy (error‐management) and precision (resolution and proximity). Corporate policy is injected via multi‐level customizable prioritization, thus combining observations with preferences. To aggregate the evidential information, a new algorithm (Cedar: Corroborative Evidential Diminishing Aggregation Rating) is proposed, which proportionally augments concordant attributes and decrements discordant ones. Cedar satisfies a challenging range of requirements and outperforms popular methods, especially due to its robustness and logical handling of uncertainty and conflict. The proposed multi‐facet eCAPS solution has many applications, of which four are included. Additionally, a case study of an MVNO Automotive is described, which necessitates joining multistakeholders’ policy. The ‘Cedar Credibility Tree’ approach, with corroborative aggregation and measured Credibility, has far reaching utility, especially in behavioral context and diagnosis
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Tomic, David. "Service Aware Traffic Distribution in Heterogeneous A2G Networks." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-248995.

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Airplanes have different ways to connect to the ground, including satellite air-to-ground communication (SA2GC) and direct air-to-ground communication (DA2GC). Each connection/link offers a different varying amount of transmission capacity over flight time. The traffic generated in the airplane must be forwarded/sent to ground over the available links. It is however not clear how the traffic should be forwarded so that traffic quality of service (QoS) requirements are met. The thesis at hand considers this question, and implements an algorithm handling the forwarding decision with three different forwarding schemes. Those consider traffic parameters in calculating a value assigned to each traffic flow, over a combination of priority, delay requirement and the number of times a traffic flow is dropped. The forwarding algorithm relies on proposed in-flight broadband connectivity (IFBC) network traffic and air-to-ground (A2G) link models, which aim at approximating the network environment of future IFBC networks. It is shown that QoS requirements of traffic flows in terms of packet loss and delay cannot be satisfied with capacities offered by current DA2GC and SA2GC technology. For a future scenario, with higher assumed link capacities, the QoS requirements are met to a higher extent. This is shown in lower packet loss and delay experienced by the respective traffic flows. Further, it is shown that the performance can be improved with specific forwarding schemes used by the forwarding algorithm. It is also investigated how a web cache can be used as a fallback technology. For this a required web cache hit rate is found, which should be high enough to offload the network with content served from the cache. Overall, the thesis aims at proposing an efficient traffic forwarding technique, and at giving insight into an alternative if this technique fails.
Flygplan har olika sätt att ansluta till marken, inklusive satellit-mark-kommunikation (SA2GC) och direkt luft till markkommunikation (DA2GC). Varje anslutning/länk erbjuder en annan varierande mängd överföringskapacitet under flygtid. Den trafik som genereras i flygplanet måste vidarebefordras/skickas till marken över de tillgängliga länkarna. Det är emellertid inte klart hur trafiken ska vidarebefordras så att trafiksäkerhetskvaliteten (QoS) uppfylls. Avhandlingen handlar om denna fråga och implementerar en algoritm som hanterar vidarebefordringsbeslutet med tre olika vidarebefordringssystem. De betraktar trafikparametrar vid beräkning av ett värde som tilldelas varje trafikflöde, över en kombination av prioritet, fördröjningskrav och antalet gånger ett trafikflöde tappas. Vidarebefordringsalgoritmen är beroende av föreslagna bredbandsförbindelser (IFBC) i nätverk och A2G-länkmodeller, som syftar till att approximera nätverksmiljön för framtida IFBC-nätverk. Det visas att QoS-krav på trafikflöden när det gäller paketförlust och fördröjning inte kan tillgodoses med kapacitet som erbjuds av nuvarande DA2GC- och SA2GC-teknik. För ett framtida scenario, med högre antagna länkkapacitet, uppfylls QoS-kraven i högre utsträckning. Detta visas med lägre paketförlust och fördröjning som upplevs av respektive trafikflöden. Vidare är det visat att prestanda kan förbättras med specifika vidarekopplingsscheman som används av vidarebefordringsalgoritmen. Det undersöks också hur en webbcache kan användas som en återgångsteknik. För detta hittas en obligatorisk webbcache-träfffrekvens, som bör vara tillräckligt hög för att ladda upp nätverket med innehåll som serveras från cacheminnet. Sammanfattningsvis syftar uppsatsen till att föreslå en effektiv trafiköverföringsteknik och att ge insikt om ett alternativ om denna teknik misslyckas.
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Luo, Wei-Cheng, and 羅偉城. "Connectivity-aware Geographic Routing Approach for VANETs." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/t837jq.

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碩士
國立虎尾科技大學
資訊工程研究所
99
The emerging research filed has been proposed is called Vehicular Ad Hoc Networks (VANETs).The scenario of VANETs is based on mobility fast and topology complexity. Thus, position-based routing is more suitable than reactively routing in VANETs. Because position-based routing just needs to maintain neighbor nodes’ information and doesn’t maintain the full route’s information, it also has better scalability than reactively routing when the topology changes too fast. But previously proposed position-based routing protocol for VANETs only consider position information, so the vehicle would route to the “void road segment”, then may course the packet’s route error or cost extra route overhead. For solving preciously problem, road-based routing protocol has been proposed. In this paper, we present a position-based routing approach based on traffic exploration designed for inter-vehicle communication in urban scenario. The aim of the approach reduce beacon message overhead and increase the data packet ratio, but it doesn’t affect the overall throughput. Thus, the paper proposes the traffic information aggregation and dissemination strategy to exchange beacon message, route selection mechanism for traffic exploration and packet rely selection mechanism to prevent transmission fail problem. We implemented the proposed method, GPSR and GPCR on QualNet. In the first scenario which vehicle density is high, simulation result shows our proposed method doesn’t have specific outperforms traditional position-based routing because packet delivery ratio doesn’t affect if traditional position-based routing doesn’t consider the traffic information. But in the second scenario which is uneven distribution of each road traffic, simulation result shows our proposed method has specific outperforms traditional position-based routing when the communication distance increment because traditional position-based routing doesn’t consider the traffic information.
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Hsu, Chun-Jung, and 許峻榮. "Connectivity and Energy-aware Clustering Approach for Wireless Sensor Networks." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/83973980784829523269.

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碩士
朝陽科技大學
資訊與通訊系
103
The Wireless Sensor Networks consist of hundreds or thousands of sensor nodes distributed in environment for environmental monitoring. In this regard, how to effectively use limited energy for extended lifetime of a network is a critical issue because sensor nodes featuring compact volume, low cost and low power consumption depend on limited electricity from batteries for operations. In researches of energy efficiency of traditional sensor networks, the researchers considered the factors about energy consumption only rather than isolated nodes influencing operations of whole networks. As an important factor to be considered, the node connectivity contributes to reductions of isolated nodes. Moreover, the clustering technique is a method which is effective in saving energy and minimizing overloads of single sensor nodes in the extensively deployed sensor network environment. With node connectivity and residual energy considered, a clustering partitioning method in this research is able to adjust the size of a cluster dynamically and reduce consumption of energy transmitted among sensor nodes by referring to change of the network environment. As shown in experimental results, our method is effective in improving energy consumption of traditional wireless sensor networks and advantageous to energy efficiency of sensor nodes and extended running hours of whole networks.
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Wang, Ching-Yen, and 王敬言. "Qos-Aware downlink Scheduling for LTE-A network with dual connectivity enhancement." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/ygmqez.

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碩士
淡江大學
資訊工程學系碩士班
104
Nowadays, multimedia application services are become more and more popular. And come along with the traffic demand increasing. For the above reasons, not only the bandwidth but the quality of services are need to be improved. As the appearance of small cell, user could connect the macro cell and small cell simultaneously. This mechanism leverage the loading of marco cell. In this paper, we design an algorithm for Qos-Aware Scheduling for LTE-A Small Cell Network with Dual Connectivity. Our algorithm guarantee the Qos of GBR flows and also improve the efficiency of entire network.
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Books on the topic "Connectivity-aware"

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Dowd, Cate. Digital Journalism, Drones, and Automation. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190655860.001.0001.

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Advances in online technology and news systems, such as automated reasoning across digital resources and connectivity to cloud servers for storage and software, have changed digital journalism production and publishing methods. Integrated media systems used by editors are also conduits to search systems and social media, but the lure of big data and rise in fake news have fragmented some layers of journalism, alongside investments in analytics and a shift in the loci for verification. Data has generated new roles to exploit data insights and machine learning methods, but access to big data and data lakes is so significant it has spawned newsworthy partnerships between media moguls and social media entrepreneurs. However, digital journalism does not even have its own semantic systems that could protect the values of journalism, but relies on the affordances of other systems. Amidst indexing and classification systems for well-defined vocabulary and concepts in news, data leaks and metadata present challenges for journalism. By contrast data visualisations and real-time field reporting with short-form mobile media and civilian drones set new standards during the European asylum seeker crisis. Aerial filming with drones also adds to the ontological base of journalism. An ontology for journalism and intersecting ontologies can inform the design of new semantic learning systems. The Semantic CAT Method, which draws on participatory design and game design, also assists the conceptual design of synthetic players with emotion attributes, towards a meta-model for learning. The design of context-aware sensor systems to protect journalists in conflict zones is also discussed.
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Book chapters on the topic "Connectivity-aware"

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Matos, Ricardo, and Susana Sargento. "Context-Aware Connectivity and Mobility in Wireless Mesh Networks." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 49–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-11817-3_5.

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Bellavista, Paolo, Antonio Corradi, and Carlo Giannelli. "Context-Aware Middleware for Reliable Multi-hop Multi-path Connectivity." In Software Technologies for Embedded and Ubiquitous Systems, 66–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-87785-1_7.

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Kong, Linghe, Linsheng Ye, Bowen Wang, Xiaofeng Gao, Fan Wu, Guihai Chen, and M. Shamim Hossain. "Connectivity-Aware Virtual Machine Placement in 60 GHz Wireless Cloud Centers." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 33–43. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-69605-8_4.

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Shafiee, Kaveh, and Victor C. M. Leung. "Connectivity-Aware Minimum-Delay Geographic Routing with Vehicle Tracking in VANETs." In Ad Hoc Networks, 256–67. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-11723-7_17.

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Stamou, Adamantia, Nikos Dimitriou, Kimon Kontovasilis, and Symeon Papavassiliou. "Delay Analysis of Context Aware Mobility Management Systems Addressing Multiple Connectivity Opportunities." In Ad-hoc, Mobile, and Wireless Networks, 121–33. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19662-6_9.

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Montemanni, R., and L. M. Gambardella. "Power-Aware Distributed Protocol for a Connectivity Problem in Wireless Sensor Networks." In Self-star Properties in Complex Information Systems, 403–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11428589_26.

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Wang, Shen, Kongming Liang, Yiming Li, Yizhou Yu, and Yizhou Wang. "Context-Aware Refinement Network Incorporating Structural Connectivity Prior for Brain Midline Delineation." In Medical Image Computing and Computer Assisted Intervention – MICCAI 2020, 208–17. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59728-3_21.

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Tosun, Mustafa, Umut Can Çabuk, Vahid Akram, and Orhan Dagdeviren. "On Connectivity-Aware Distributed Mobility Models for Area Coverage in Drone Networks." In Trends in Data Engineering Methods for Intelligent Systems, 369–80. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-79357-9_36.

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Bag, Samiran, Aritra Dhar, and Pinaki Sarkar. "100% Connectivity for Location Aware Code Based KPD in Clustered WSN: Merging Blocks." In Lecture Notes in Computer Science, 136–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33383-5_9.

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Qin, Yulei, Mingjian Chen, Hao Zheng, Yun Gu, Mali Shen, Jie Yang, Xiaolin Huang, Yue-Min Zhu, and Guang-Zhong Yang. "AirwayNet: A Voxel-Connectivity Aware Approach for Accurate Airway Segmentation Using Convolutional Neural Networks." In Lecture Notes in Computer Science, 212–20. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-32226-7_24.

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Conference papers on the topic "Connectivity-aware"

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Le, Van Tuan, Noury Bouraqadi, Serge Stinckwich, Victor Moraru, and Arnaud Doniec. "Making networked robots connectivity-aware." In 2009 IEEE International Conference on Robotics and Automation (ICRA). IEEE, 2009. http://dx.doi.org/10.1109/robot.2009.5152471.

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Shahriar, Nashid, Reaz Ahmed, Shihabur Rahman Chowdhury, Md Mashrur Alam Khan, Raouf Boutaba, Jeebak Mitra, and Feng Zeng. "Connectivity-aware virtual network embedding." In 2016 IFIP Networking Conference (IFIP Networking) and Workshops. IEEE, 2016. http://dx.doi.org/10.1109/ifipnetworking.2016.7497249.

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Kumar, Praveen, Joy Kuri, Pavan Nuggehalli, Mario Strasser, Martin May, and Bernhard Plattner. "Connectivity-Aware Routing in Sensor Networks." In 2007 International Conference on Sensor Technologies and Applications (SENSORCOMM 2007). IEEE, 2007. http://dx.doi.org/10.1109/sensorcomm.2007.4394952.

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He, Rong, Kee Chaing Chua, and Gurusamy Mohan. "Connectivity Aware Protected Working Lightpath Envelope." In 18th International Conference on Computer Communications and Networks - ICCCN 2009. IEEE, 2009. http://dx.doi.org/10.1109/icccn.2009.5235381.

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Yang, Qing, Alvin Lim, and Prathima Agrawal. "Connectivity Aware Routing in Vehicular Networks." In 2008 IEEE Wireless Communications and Networking Conference. IEEE, 2008. http://dx.doi.org/10.1109/wcnc.2008.392.

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Barreto, João, João Garcia, Luís Veiga, and Paulo Ferreira. "Data-aware connectivity in mobile replicated systems." In the Eighth ACM International Workshop. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1594139.1594147.

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El Sibai, Rayane, Talar Atechian, Jacques Bou Abdo, Rami Tawil, and Jacques Demerjian. "Connectivity-aware service provision in vehicular cloud." In 2015 International Conference on Cloud Technologies and Applications (CloudTech). IEEE, 2015. http://dx.doi.org/10.1109/cloudtech.2015.7337017.

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Ibrahim, Ahmed S., Karim G. Seddik, and K. J. Ray Liu. "Connectivity-Aware Network Maintenance via Relays Deployment." In 2008 IEEE Wireless Communications and Networking Conference. IEEE, 2008. http://dx.doi.org/10.1109/wcnc.2008.452.

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Ghafoor, Huma, N. D. Gohar, and Rizwan Bulbul. "Anchor-Based Connectivity Aware Routing in VANETs." In 2012 8th International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM). IEEE, 2012. http://dx.doi.org/10.1109/wicom.2012.6478431.

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LEGUAY, JÉRÉMIE, TIMUR FRIEDMAN, SERGE FDIDA, VANIA CONAN, and ANDRÉ COTTON. "CONNECTIVITY AWARE ROUTING IN AD-HOC NETWORKS." In Proceedings of the 10th IFIP Conference. PUBLISHED BY IMPERIAL COLLEGE PRESS AND DISTRIBUTED BY WORLD SCIENTIFIC PUBLISHING CO., 2005. http://dx.doi.org/10.1142/9781860947315_0011.

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