stationary relay nodes deployment on vehicular opportunistic networks

... combine these heterogeneous networks with vehicular sensor networks (VSNs), vehicular mesh networks (Vmeshs), and other existing networks While the interconnection of these networks must ensure transport ... one is for the object (target) detection module to speed up the detection using inverse coordinate transformation, and the other is for the motion control module to decide motion parameters Once ... reflections on rerouting ation, grey differential equation modeling, whitening equation for prediction, and inverse accumulated generating operation (IAGO) The GM(1,1) model is the most commonly...

Ngày tải lên: 22/06/2014, 19:20

... communication; multiple-antenna multiple -relay networks; convex optimization; amplify and forward relaying Introduction It is well established that in most cases relaying techniques provide considerable ... provides a solution that would reduce the power consumption by approximately dB Conclusion A relay network with multiple relay each having multiple antennas is considered The relay matrices are ... power constraint at the destination, the destination quality of service or the sum power of relays In our opinion, the limited power for each relay is a more realistic assumption, because each relay...

Ngày tải lên: 21/06/2014, 23:20

... reputation threshold Reputation value suppression function helps ERS to control the maximum value of reputation measurement The second function is the reputation value degradation function which ... reputation value accumulation and the degradation function D( ) for reputation decrease, can be flexibly defined and constructed based on practical VANET environments in real world 4.3 Configuration ... information Event-based reputation system (ERS) Event reputation value collection Event table Event confidence list Event management collection Reputation value adaptation module Light Speaker Monitor...

Ngày tải lên: 21/06/2014, 23:20

... greater autonomy of sensor nodes One of these application areas has focused on Wireless Sensor Networks (WSNs) in the users’ environment, such as their home, in order to provide monitoring or ... increasing functionality of sensor nodes, while meeting the low power consumption requirements in sensor networks The sensor nodes implement strategies to reduce power consumption at multiple levels, ... applications This work is focused on the evaluation of the impact of the furniture on the signal propagation Since the overall environment includes objects and materials, their distribution will...

Ngày tải lên: 05/12/2015, 22:57

... for an organization, typically within the firewall • Low total cost of ownership • Greater control over security, compliance, QoS • Easier integration • Supports existing applications Cloud Service ... Composition of or more interoperable clouds enabling data and application portability VMware focus to deliver the best of both worlds Accessible over the Internet for general consumption • Low ... for general consumption • Low acquisition costs • Less administrative burden • On- demand capacity • Limited offerings Users Organization IT Organization m VMware vCloud* Director Catalogs VMware...

Ngày tải lên: 17/03/2014, 18:20

... Stationary Relay Nodes Deployment on Vehicular Opportunistic Networks by Joel J P C Rodrigues, Vasco N G J Soares, and Farid Farahmand, reviews recent advances in the deployment of stationary relay ... in the deployment of stationary relay nodes on vehicular opportunistic networks This chapter also discusses the impact of adding stationary relay nodes on the performance of delay-tolerant network ... message to the destination They use the median intercontact duration or exponentially aged intercontact duration as the weight on links The exponentially aged intercontact duration of node i and j...

Ngày tải lên: 31/05/2014, 00:52

... information This information is instead provided in the conguration le of each DTN2 node that uses KauNet controlled links (see Section 3.2) The conguration le also contains the information required to ... the convergence layer on the DTN2 node that this link represents a connection to é ễểệỉ < > (Optional) The port of the convergence layer on the DTN2 node this link represents a connection to ... [15]) Under these conditions, the distribution of opportunistic contacts over time is as follows in a periodic way: no contact, kiosk/bus contact, no contact, gateway/bus contact, and so forth...

Ngày tải lên: 21/06/2014, 11:20

... consolidation on her chest X-ray 18 months after surgery Discussion Figure and mediastinal node: CT, ography contralateral fused the right upper positron emission increased uptake inPET/CT consolidation ... Figure sion tomography and fused PET/CT images increased uptake in the dense consolidation positron of Coronal1series showing right upper lobe: CT,with areasemisCoronal series showing dense consolidation ... and hilar nodes was noted Biopsies were taken from the right upper lobe, paratracheal nodes, para-oesophageal nodes and hilar nodes All showed reactive changes only on the frozen section Following...

Ngày tải lên: 11/08/2014, 17:21

... Balancing M atrix 31 of other nodes to distribute content names based on LBM The following would deư scribe structure, construction condition, construction progression and management mechanism ... is stored on only one (or few) of the nodes and discovered based on users queries 2.3.1 Solution Data indexing proposed as a distribution inform ation discovery solution I t also based on Structured ... we focus our intentions on DHT-based P2P networks and the realization of m u ltiple-attribu te searching system based on DHT Simple DHT-ba*scd distribution of inform ation contents can be used...

Ngày tải lên: 25/03/2015, 09:39

... non-linear constrained optimization problem considered only one class of jobs and showed that the delay functions were indeed convex and increasing functions Whereas, in [12] the delay functions ... solutions to these problems, if they exist Detailed analysis and discussions on studying the strategies are conducted with the consideration of practical constraints In the following, the main contributions ... 82 Concluding Remarks 84 Extensions to Divisible Loads Scheduling on Arbitrary Networks 5.1 86 88 5.1.1 Description of system, assumptions and notations ...

Ngày tải lên: 16/09/2015, 15:54

... us”…………………………………………… 66 One-One, One-Many, Many-Many Relations Part 1……………… 89 One-One, One-Many, Many-Many Relations Part 2……………… 105 Kingdoms of Desire…………………………………………………… 110 Of Conclusions and Connections…………………………………… ... foreigner that connects two continents together, that makes possible a sense of what East-West constitutes And this constitution comes through conquest The conquest, however, consists of a doubling ... reader may receive a message contrary to its first intentions With this in mind, the thesis functions only if there is a correspondence, a co-habitation of more than one participant in the performance...

Ngày tải lên: 16/10/2015, 15:38

... concerning the IL, DVF and OptDRL algorithms in Deterministic environments was published in 2005 at the Second International Conference on Intelligent Sensors, Sensor Networks and Information ... wireless sensor nodes spread out in an environment for monitoring or tracking purposes Most of the research work on sensor networks focuses on techniques to relay sensed information in an energy-efficient ... environment We focus on the discrete state and action spaces and on infinite-horizon case by using a discounted expected return as optimization 12 1.5 Focus, motivation and contributions of this thesis...

Ngày tải lên: 26/11/2015, 13:03

... The activation function of a neuron sig (x) Sigmoidal activation function of a neuron tan sig ( x) Tangent sigmoidal activation function of a neuron Oid Desired output value of neuron i γ ,γ1,γ ... between fuzzy control and conventional control is that, conventional control starts with a mathematical model of the process and controllers are designed for the model; fuzzy control, on the other ... for dynamic positioning (DP) control The ANNAI controllers are used in parallel with a conventional proportional-derivative (PD) controller to adaptively compensate for the environmental effects...

Ngày tải lên: 25/04/2016, 18:44

... based on the full status elements: speed difference, location, and direction rather than considering only position and direction Some clustering techniques took mobility into consideration for ... proper decisions before entering the crash dangerous zone [4, 5] Moreover, information about the current transportation conditions facilitate driving by taking new routes in case of congestion, thus ... Keywords: Vehicular networks; V2V; clustering schemes in VANET; CH election Page-1 Introduction Recent advances in wireless networks have led to the introduction of a new type of networks called vehicular...

Ngày tải lên: 20/06/2014, 20:20

... relay R All nodes operate in a half-duplex fashion The communication takes place slot-wise where one time-slot represents the end-to-end transmission duration In what follows, we consider one time-slot ... Journal on Wireless Communications and Networking 2011, 2011:194 http://jwcn.eurasipjournals.com/content/2011/1/194 System descriptions We consider a multiuser two-way relay network consisting ... allocation scheme based on the derived expression that minimizes the system outage probability In addition, we derive expressions for upper and lower bounds on the average sum-rate of the considered...

Ngày tải lên: 20/06/2014, 21:20

... amplify-andforward relay networks: optimal power allocation versus selection,” IEEE Transactions on Wireless Communications, vol 6, no 8, pp 3114–3123, 2007 [14] Z Yi and I M Kim, “Joint optimization of relay- precoders ... relays, quantization errors may compensate one another It should be noted that, although it is a multiuser MIMO system, on the second hop, only one user feeds the weights back (the selected one), ... transmit antennas, NRS cooperative relay stations (RSs), each one with only one antenna for transmission and reception, and Nu user’s terminals (UT), also with one receive antenna each We assume...

Ngày tải lên: 21/06/2014, 11:20

... Performance evaluation and testbed demonstration This section focuses on the testbed demonstration and performance evaluation of IP over VDTNs and considers two sections The first section presents the ... Section Section focuses on the performance evaluation and validation of the proposed testbed Section concludes the article and pinpoints directions for future studies Vehicular delay-tolerant networks ... Symposium on Computers and Communications 32 (ISCC’09), Sousse,Tunisia, 5–8 July 2009, pp 122–127 25 JJPCRodrigues, VNGJ Soares, F Farahmand, Stationary relay nodes deployment on vehicular opportunistic...

Ngày tải lên: 21/06/2014, 17:20

... the mobile nodes will collaborate with the stationary nodes (and with each other) in order to sample areas that are least covered by the stationary nodes In the context of WSNs, sensor nodes are ... mobile nodes navigate through the sensor field autonomously using only local information (i.e., the mobile node’s beliefs and measurements as well as information collected from the nodes, stationary ... sensors can reach the fusion center (commonly referred to as sink in the WSN literature) using multihop communication In addition, we consider a set E with E = |E | stationary nonoverlapping event...

Ngày tải lên: 21/06/2014, 22:20

... depends on how much fraction data is devoted by the relay to cooperative transmission By contrast, the relay revenue actually depends EURASIP Journal on Wireless Communications and Networking on how ... source under the conditions of direct transmission as well as denote the relay More specially, in the case of noncooperation, the source and relay utility are simply the satisfaction measure achieved ... 012 104 600 700 800 900 1000 User to BS distance (m) Relay non-cooperation Source non-cooperation 1100 1200 Relay cooperation Source cooperation Figure 3: User utilities with the proposed strategy...

Ngày tải lên: 21/06/2014, 23:20

... repetition coding or other more powerful codes In this thesis, we only consider the relay using selection Decode-and-Forward protocol in Time-Division mode 2.1 Traditional Relay Multiple-Wireless Networks ... multiple -relay networks using network coding, x1 is carried on link s1 d, r1 d and r2 d 41 Conclusions and Future Works In this thesis, we consider the effects of network coding on cooperative relay networks ... probability of relay networks with different scenarios relay j (i, j = 1, and i j) and between the relay R1 and the relay R2 It means that x1 is only transmitted by the source S1 on s1 d and R1 on r1...

Ngày tải lên: 25/03/2015, 11:05