sensor protocols for information via negotiation

... four performance macro areas It is the first step towards the formal definition of objective performance metrics 1) Information Loss: The importance of the Information Loss for EMSs is clear, for example, ... SATELLITE-BASED SENSOR NETWORKS FOR INFORMATION RETRIEVAL 465 Fig Example of EMS for weather prediction The assumption of this paper is that all sensors directly communicate with and send information ... but only one of them is selected to forward the information coming from a given sensor to the destination The problem is to select the best sink for each single sensor so to approach an ideal situation...

Ngày tải lên: 14/04/2015, 13:52

... consider the MAC layer performance, that is, throughput The effect of MAC for information retrieval on information processing is analyzed in [7, 8] for infinite and finite sensor density networks, ... deployment, each sensor obtains its own location information through some positioning method At a prearranged time, all sensors measure their local signals, MAC for Optimal Information Retrieval ... is also to minimize E{dmax } MAC FOR OPTIMAL INFORMATION RETRIEVAL PATTERN 3.1 Optimal centralized scheduling Assume that the location information xN of all sensors is available to the mobile...

Ngày tải lên: 23/06/2014, 00:20

... feasibility of implementing a security subsystem for an extremely limited sensor network platform We have identied and implemented useful security protocols for sensor networks: authenticated and condential ... typical SmartDust sensor network The network forms around one or more base stations, which interface the sensor network to the outside network The sensor nodes establish a routing forest, with a ... freshness is useful for time synchronization within the network NOTATION REQUIREMENTS FOR SENSOR NETWORK SECURITY In this section, we formalize the security properties required by sensor networks,...

Ngày tải lên: 14/03/2014, 22:20

... all sensor nodes, sufficient memory to store cryptographic keys, and means for communicating with outside networks SPINS: SECURITY PROTOCOLS FOR SENSOR NETWORKS We have an advantage with sensor ... designed and built a security subsystem for an extremely limited sensor network platform We have identified and implemented useful security protocols for sensor networks: authenticated and confidential ... but carries no delay information, and strong freshness, which provides a total order on a request–response pair, and allows for delay estimation Weak freshness is useful for sensor measurements,...

Ngày tải lên: 14/03/2014, 22:20

Ngày tải lên: 28/03/2014, 15:20

... networks, this area still remains open for future research in WSNs For instance, a forwarding approach that exploits the use of directional antennas is proposed in [13] for WSNs It tries maximizing efficiency ... energy-efficient and low-latency MAC for data gathering in sensor networks,” in Proceedings of International Workshop on Algorithms for Wireless, Mobile, Ad Hoc and Sensor Networks (WMAN ’04), Santa ... Di Palma, R Fantacci, and A Manes, “Design and application of enhanced communication protocols for wireless sensor networks operating in environmental monitoring,” in Proceedings of IEEE International...

Ngày tải lên: 22/06/2014, 19:20

... is quite common in general WSNs For instance, data-collection nodes exchange their collected information before sending it to data-gathering nodes to reduce information redundancy caused by position ... ASMAC for On-Phase and Off-Phase duration designs: trying to save more energy, keeping information up to date, and avoiding losing information due to buffer overflowing The optimum values for T ... solutions for WSNs are put forward Energy-efficient MAC protocols for WSNs can be classified into three main categories according to strategies applied to channel access: contention-based protocols, ...

Ngày tải lên: 22/06/2014, 22:20

... Information Service Definition - Part 2: Common Management Information Service", 22 December 1988 [12] ISO 9596: "Information Processing Systems - Open Systems Interconnection, Management Information ... Management Information Services Structure of Management Information - Part I: Management Information Model", Sydney, December 1988 [20] Postel, J., "User Datagram Protocol", RFC 768, USC /Information ... Management Information Service Element The Common Management Information Service Element (CMISE) is specified in two ISO documents The service definition for the Common Management Information...

Ngày tải lên: 16/07/2014, 08:55

... SMACS Self-Organizing Medium Access Control for Sensor Networks SpeckMAC Speck Media Access Control xxix SPIN Sensor Protocols for Information via Negotiation SPT Shortest Path Tree SSA Sequential ... developed for real-life applications This thesis analyses the power consumption of wireless sensor nodes in practice for performing different tasks The energy sources for sustaining the sensor nodes ... Methods in Wireless Sensor Networks 24 2.1 Introduction 24 2.2 Routing Protocols for Wireless Sensor Networks 27 2.2.1 Overview of routing protocols in WSNs...

Ngày tải lên: 10/09/2015, 09:04

... implement efficient large data dissemination and collection protocols for wireless sensor networks, which outperform state-of-the-art protocols by a large margin List of Tables 3.1 Correlation ... speaks itself for his commitment I am most grateful to him for his efforts in nurturing my research skills and critical thinking I am grateful to Prof Ananda, he was always there for everything ... Efficient Data Dissemination and Collection Protocols for Wireless Sensor Networks Manjunath Doddavenkatappa A THESIS SUBMITTED FOR THE DEGREE OF PhD IN COMPUTER SCIENCE SCHOOL OF COMPUTING...

Ngày tải lên: 10/09/2015, 09:10

... Wireless Sensor Networks (EH-WSNs) 1.2.1 Energy Harvesters for Sensor Nodes To increase the lifetime of sensor networks, recent research efforts have focused on developing energy harvesting devices for ... schedules for different nodes with WSF(7,3,1) 2.4.2 Random Access MAC Protocols Random access protocols not need to exchange state information or schedules but incur additional idle time for the ... battery-operated sensor nodes and not for energy harvesting sensor nodes Although networking protocols have been designed specifically for WSNs that utilize harvested energy, our protocols have...

Ngày tải lên: 10/09/2015, 15:50

... focus on the design of energy efficient protocols for WSNs in the form of wakeup scheduling of the sensor nodes We propose two energy conserving protocols for different applications, one in the ... unreliability and and information loss as well as temporary failures which are always considered in the design of protocols for WSNs Every issue mentioned introduces several new problems for this kind ... although it only uses local information their performance is comparable Moreover, we show that using this algorithm, there is no need to use localization and global information Extensive simulation...

Ngày tải lên: 05/10/2015, 21:23

... playout buffers for trace information, the impact of playout buffers on application performance cannot be determined either However, the round trip information is very useful for examining round ... Call flow for web form entry for call center 297 6.21 Bidirectional translation services for the hearing impaired 299 xiv xv Acknowledgments First and foremost, ... reviewing existing protocols for resource discovery (and finding them lacking for wide area applications), we present a scalable protocol for wide area service discovery, which is ideal for discovery...

Ngày tải lên: 06/11/2012, 10:35

Ngày tải lên: 14/01/2013, 11:56

... GPRS Models for the Physical Layer and for User Traffic Generation 5.1 How to Account for the Physical Layer? 5.1.1 What to Account For and How? 5.1.2 Using Approximations for Error Performance Assessment ... Random Access Protocols 3.5.5 Random Access with CDMA 3.5.6 Protocols based on some Form of Channel Sensing 3.5.7 Channel Sensing with CDMA 3.5.8 A Case for Reservation ALOHA-based Protocols 3.6 ... study Finally, together with some background information, an overview of our own research efforts related to PRMA-based protocols is provided These efforts are mainly concerned with how to combine...

Ngày tải lên: 02/03/2013, 16:59

... common “protocol” as the information flowed between the IMPs Thus, each IMP only had to convert between two formats: the internal format of the host computer and the network format This was much ... author shall be liable for any loss of profit or any other commercial damages, including but not limited to special, incidental, consequential, or other damages For general information on our other ... presented So a chapter and section on prepending AS Path information with the BGP AS Path attribute is followed by sections on prepending AS Path information in both the Cisco and Juniper Networks router...

Ngày tải lên: 06/11/2013, 00:15

... 4.3.6) Information Ownership Information here is referred to the official events, information provided in university website and course website, information about courses, examination result, Information ... website information or any other information has to make sure that the information provided in the information sheets or data base are updated and correct, ultimately achieving best performance ... I C E INFORMATION PROVIDER S STUDENT Fig 5) Identification of Stake Holders Information Provider: Information providers are any one in the university who maintains the valid information for the...

Ngày tải lên: 20/12/2013, 19:15

... the information? • What information handled by or about the system should not be disclosed and to whom? • Where specifically is the information processed and stored? • What are the types of information ... assigned for each threat likelihood level and a value assigned for each impact level For example, • The probability assigned for each threat likelihood level is 1.0 for High, 0.5 for Medium, 0.1 for ... automated information technology (IT) systems1 to process their information for better support of their missions, risk management plays a critical role in protecting an organization’s information...

Ngày tải lên: 22/01/2014, 02:20