query range problem in wireless sensor networks

... “Optimizing data replication for expanding ring-based queries in wireless sensor networks, ” in Proceedings of the 4th International Symposium on Model- ing and Optimization in Mobile, Ad Hoc, and Wireless ... minimal number of hops. Since every sink node delivers the query request by adopting directed diffusion routing algorithm, all sensor nodes can buffer the minimal-hop path to each s ink node in ... S. Wicker, “Modelling data- centric routing in wireless sensor networks, ” in Proceedings of the 21st Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM ’02), pp.

Ngày tải lên: 22/06/2014, 19:20

... TRANSPORT PROBLEM IN WSN In the preceding discussions, we introduced the notion of event-to-sink reliability in WSN and pointed out the inapplicability of existing transport solutions Before proceeding ... for wireless sensor networks, ” in Proc ACM WSNA, Atlanta, GA, Sep 2002, pp 1–11 [13] J Zhao and R Govindan, “Understanding packet delivery performance in dense wireless sensor networks, ” in Proc ... identification of sensor nodes Further, we model any increase in source information about the event features as a corresponding increase in the reporting rate, , of sensor nodes Definition 3: The reporting

Ngày tải lên: 16/03/2014, 19:20

... position estimation in wireless sensor networks, ” in Proceedings of the 4th International Symposium on Information Processing in Sensor Networks (IPSN ’05), pp 324–331, April 2005 A Srinivasan, J Teitelbaum, ... statistical methods for securing wireless localization in sensor networks, ” in Proceedings of the 4th International Symposium on Information Processing in Sensor Networks (IPSN ’05), pp 91–98, ... 2005 D Liu, P Ning, and W K Du, “Attack-resistant location estimation in sensor networks, ” in Proceedings of the 4th International Symposium on Information Processing in Sensor Networks (IPSN

Ngày tải lên: 21/06/2014, 11:20

... Fang, Multiconstrained QoS multipath routing in wireless sensor networks, ” ACM Wireless Networks, vol... of the 2nd ACM International Workshop on Wireless Sensor Networks and ... deployed in a sensor field to perform sensing operations, a sensor node may fall into one of the following states [2]. (1) Sensing. A sensing node monitors the source using an integrated sensor, ... trying to minimize energy consumption. This scheme referred to as Multi-Constrained Multi-Path routing (MCMP) addresses the issue of multi-constrained QoS in wireless sensor networks by mapping

Ngày tải lên: 21/06/2014, 17:20

... Mitra, “Boundary estimation in sensor networks: theory and methods,” in Proceedings of the 2nd International Workshop on Information Processing in Sensor Networks, pp 80–95, Palo Alto, ... surrounding this area: in the example in Figure 1(a) there are six sensors. (In the remainder of this paper, by ? ?sensor? ?? we will denote the wireless transceiver which includes the sensing element. ... “Estimating inhomogeneous fields using wireless sensor networks, ” IEEE Journal on Selected Areas in Communications, vol 22, no 6, pp 999–1006,... environmental monitorning using random sensor

Ngày tải lên: 21/06/2014, 17:20

... A Mainwaring, D Culler, J Polastre, R Szewczyk, and J Anderson, ? ?Wireless sensor networks for habitat monitoring,” in Proceedings of the 1st ACM International Workshop on Wireless Sensor Networks ... tracking is one of the key motivating applications of wireless sensor networks [4–8] Passive acoustic sensor is often used in wireless sensor networks because of its universality and low cost In ... before sending its TargetInfo message The collection of TargetInfo messages is fulfilled in a time window in each cycling time step Any TargetInfo message arriving after this time window will

Ngày tải lên: 21/06/2014, 20:20

... different types can be incorporated into a single filtering algorithm. In [9], authors tracked moving objects using various kinds of Bayesian filters. From the wide range of wireless technologies ... distribution, and reproduction in any medium, provided the original work is properly cited. Bayesian filtering for indoor localization and tracking in wireless sensor networks Anup Dhital 1,2 , Pau ... suitability of several Bayesian filtering techniques for the problem of tracking a moving device by a set of wireless sensor nodes in indoor environments. In particular, we consider a setup where

Ngày tải lên: 21/06/2014, 23:20

... continuous data dissemination in wireless sensor networks, ” in Proceedings of the 1st International Conference on Intelligent Sensors, Sensor Networks and Information... Work In this ... to inherent 2 EURASIP Journal on Wireless Communications and Networking Satellite Control centre Sensor node Sensor field Mobile sink (gateway) Event area Figure 1: Wireless Sensor Networks. problems ... areas including medicine, security, factory automation, environmental monitoring, and condition- based maintenance [5]. In indoor settings, WSNs are already being used for condition-based maintenance

Ngày tải lên: 21/06/2014, 23:20

... enhancing hop-count positioning in sensor networks using multiple coordinates,” to appear in Ad Hoc and Sensor Wireless. .. Urpi, “GPS free coordinate assignment and routing in wireless ... vector routing: scalable point-to-point in wireless sensornets,” in Proceedings of the 2nd... of landmarks increases spaced or randomly) This is an important result for energyconstrained network ... node densities. For instance, we confirm the results obtained in JumPS [16], showing that increasing the number of landmarks increases the accuracy of the underlying coordinate system. However,

Ngày tải lên: 22/06/2014, 00:20

... maintain such a recovery table in sensor memory. Thus, we can reduce the computational complexity by maintaining a recovery table on a sensor node with a fea- sible table size. In summary, in ... this problem is NP-hard in an UDG, it is clear that this problem is also NP-hard in a general graph. We have the following theorem regarding its NP-hardness. Theorem 3. Finding a minimum COV in ... ucting a minimum dominating set in UDG is an NP-hard problem [15], the problem of finding COV is there- fore NP -hard. An approximation algorithm to construct a COV has been given in [27]. Initially,

Ngày tải lên: 22/06/2014, 19:20

... data fusion in sensor networks, ” in Proceedings of the 1st International Workshop on Biologically Inspired... cooperative time synchronization in pulse-connected networks, ” IEEE ... stochastic as well). In fact, in this case A T 1 = 1 and vector v in (16)readsv = 1/K·1. This condition occurs in balanced networks [13], where  i/=j α ij = 1 =  i/=j α ji . In sensor networks, this ... in Figure 2 (ε = 0.3, 0.7, γ = 3, K = 4). 1 234 5 (a) Linear networks 1 2 3 4 5 (b) Ring net- work 1 2 3 4 5 (c) Star net- works Figure 5: The linear, ring, and star networks (K = 5). three networks

Ngày tải lên: 22/06/2014, 19:20

... Last- Src indicates the beginning and ending points of MA’s data gathering. RoundIdx is the index of current round. The value is initially set to 1 by the sink in the first round, and will be incremented ... Govindan, and D Estrin, Directed diffusion,” Tech Rep ISI-TR-2004-586, USC/Information Sciences Institute,... event-to-sink reliable transport in wireless sensor networks, ” in Proceedings ... Transmitting the whole pictures taken by individual sensors to a sink node may be overwhelming for the wireless link, or even unnecessary in the case that the sink node needs only the region of interest

Ngày tải lên: 22/06/2014, 23:20

... taken in sensor information and networking architecture (SINA) [24], in TinyDB [65]ontop of TinyOS, and in Cougar [66]. In SINA, database queries are injected to network as sensor querying and ... space also for information sharing and for sending notifications to callbacks routines. The task migration as binary code is possible in BetrhaOS and in MultimodAI NeTworks of In- situ Sensors (MANTIS) ... main task of the application is the con- stant gathering of location-dependent information within a defined area. In addition to the passive monitoring involved in the environmental monitoring

Ngày tải lên: 23/06/2014, 00:20

... Data Collection System for use in Wireless Sensor Networks Master of Science Newlyn S. Erratt 11/1/2012 A COMPRESSED DATA COLLECTION SYSTEM FOR USE IN WIRELESS SENSOR NETWORKS A Thesis Submitted ... deploying data collection sensor networks. There are numerous challenges asso- ciated with deploying a wireless sensor network for collection of sensor data; among these challenges are reducing ... Data Collection System for use in Wireless Sensor Networks. Major Professor: Yao Liang. One of the most common goals of a wireless sensor network is to collect sensor data. The goal of this thesis

Ngày tải lên: 24/08/2014, 12:25

... 6.5 Sink mobility in real-time networks. .. “Learningenforced time domain routing to mobile sinks in wireless sensor fields” In Proceedings of the 29th IEEE International Conference ... routing algorithms for data dissemination to mobile sinks 6.5.1 Sink relocation According to the energy models introduced in Section 6.2, a sink should move toward... with static sinks In ... partitioning-based scheduling (PBS) algorithm for sink mobility In PBS, the locations of all sensors are known a priori Sensors are partitioned into groups, called bins, such that sensors in

Ngày tải lên: 14/04/2015, 13:26

... applied in our case. 3. THERELIABLETRANSPORTPROBLEM IN WSN In preceding discussions, we introduced the notion of event- to-sink reliability in WSN and pointed out the inapplica- bility of existing ... 177 Sink Event radius Figure 1: Typical sensor network topology with event and sink. The sink is only interested in col- lective information of sensor nodes within the event radius and not in their ... of sensor nodes. Further, we model any increase in source information about the event features as a corresponding increase in the reporting rate, f, of sen- sor nodes. The reporting rate of a sensor

Ngày tải lên: 14/04/2015, 14:34

... locate terminals in WLAN. In International Symposium on Wireless Pervasive Computing (ISWPC), 2006. [56] Xiang Ji and Hongyuan Zha. Sensor positioning in wireless ad-hoc sensor networks using multidimensional ... topology control problems are introduced In contrast to the static sensor networks, nodes in mobile sensor networks are capable 20 of moving in the sensing filed Such networks are... ... on Information Processing in Sensor Networks (IPSN), 2003. [49] Nojeong Heo and Pramod K. Varshney. A distributed self-spreading algorithm for mobile wireless sensor networks. In the IEEE Wireless

Ngày tải lên: 14/09/2015, 14:05

... FOR TARGET TRACKING IN WIRELESS SENSOR NETWORKS HAN MINGDING NATIONAL UNIVERSITY OF SINGAPORE 2010 RESOURCE MANAGEMENT FOR TARGET TRACKING IN WIRELESS SENSOR NETWORKS HAN MINGDING (B.Eng. (Hons), ... the utility of their forwarding decisions, similar to that in [61]. In similar work in Information-Directed Sensor Querying (IDSQ) [59], the order of querying nodes is defined using an information-utility ... routing in wireless sensor networks. The adaptive sensor selection scheme for target tracking in a single-hop sensor network from Chapter 3 is extended to a distributed sensor election scheme in a

Ngày tải lên: 16/10/2015, 11:57

... using these protocols. The main purpose of these nodes is to gather information or events occurring from their targets. The main functions associated with sensor nodes include: collecting information ... functionalities in terms of one base station participating in one system. It is important to remember that with an increase in a sensor network there’s an increase in the distance separating the base ... issues faced in WSNs. In particular, the focuses on LEAP protocol taking into consideration its advantages and LEAP is also a very popular security solution in Wireless Sensor Networks and...

Ngày tải lên: 05/03/2014, 23:20

... discussed, inserting training symbols is a heuristic way to improve the performance. It is shown in the 25 Decentralized estimation over orthogonal multiple- access fading channels in wireless sensor networks optimal ... communication SNR levels. It is interesting to see that using more training symbols does not improve the performance of the MLE as expected, because inserting training symbols will reduce the energy ... transmission codebook design in fading channels for decentralized estima- tion in wireless sensor networks. in IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP’ 09, (Apr...

Ngày tải lên: 18/06/2014, 22:20