sensor network

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The Worst-Case Capacity of Wireless Sensor Networks

The key application scenario of wireless sensor networks is data gathering: sensor nodes transmit data, possibly in a multi-hop fashion, to an information sink. The performance of sensor networks is thus characterized by the rate at which information can be aggregated to the sink. This paper derives the first scaling...

Tags: Network, Sensor, Association For Computing Machinery, Sensor Network, Wi-Fi, Wireless

White papers 2007-04-27

Connecting Wireless Sensornets With TCP/IP Networks

Wireless sensor networks are based on the collaborative efforts of many small wireless sensor nodes, which collectively are able to form networks through which sensor information can be gathered. Such networks usually cannot operate in complete isolation, but must be connected to an external network through which monitoring and controlling...

Tags: Network, Wireless, Sensor Network, Tcp/Ip, Network Technology, Networking

White papers 2007-01-01

Distributed TCP Caching for Wireless Sensor Networks

Many applications of wireless sensor networks are useful only when connected to an external network. Previous research on transport layer protocols for sensor networks has focused on designing protocols specifically targeted for sensor networks. The deployment of TCP/IP in sensor networks would, however, enable direct connection between the sensor network...

Tags: Network, Sensor, TCP, Sensor Network, Tcp/Ip, Wi-Fi, Networking, Wireless

White papers 2007-01-01

An Investigation Into Intra-Vehicle Sensor Networks

Wireless sensor networks enable the development of distributed sensing applications atop tiny "Mote" computing platforms. As a result, collections of these motes can be placed in an environment in order to collect data unobtrusively. This paper presents an investigation into the feasibility of retrofitting a vehicle with wireless sensor network...

Tags: Network, Sensor, University Of California, Sensor Network, Wi-Fi, Wireless

White papers 2006-12-10

TCP Support for Sensor Networks

Communication between sensors and controlling entities at the edge or outside the sensor network is needed for reliable remote sensor node management and reprogramming. TCP would be useful for tasks, where reliable unicast is appropriate, but the high bit error rates in wireless sensor networks lead to energy inefficiencies reducing...

Tags: Network, Sensor, TCP, Sensor Network, Tcp/Ip, Networking

White papers 2006-12-02

GPS-Free Node Localization in Mobile Wireless Sensor Networks

An important problem in mobile ad-hoc wireless sensor networks is the localization of individual nodes, i.e., each node's awareness of its position relative to the network. This paper introduces a variant of this problem directional localization where each node must be aware of both its position and orientation relative to...

Tags: Mobile, Network, Localization, Sensor, Wireless, Sensor Network, GPS, Handhelds, Networking, Consumer Electronics, Personal Technology, Hardware

White papers 2006-06-25

Greedy Is Good: On Service Tree Placement for In-Network Stream Processing

This paper is concerned with reducing communication costs when executing distributed user tasks in a sensor network. This paper takes a service-oriented abstraction of sensor networks, where a user task is composed of a set of data processing modules called services with dependencies. Communications in sensor networks consume significant energy...

Tags: Goal, Sensor Network, Networking

White papers 2006-04-07

The arrival of geosensor networks

In a very interesting article, Location Intelligence describes how the capture of geospatial information traditionally done by using cameras, laser scanners and GPS sensors, is being revolutionized by recent advances in advances in nanotechnology. In fact, "nanotechnology has made it both feasible and economically viable to develop and deploy low-cost,...

Tags: geosensor network, sensor, network

Blog posts 2006-03-16

A Security Framework for Wireless Sensor Networks

Wireless sensor networks are result of developments in micro electro mechanical systems and wireless networks. These networks are made of tiny nodes which are becoming future of many applications where sensor networks are deployed in hostile environments. The deployment nature where sensor networks are prone to physical interaction with environment...

Tags: Network, Wireless Sensor Network, University Of Sydney, Sensor Network, Security Measure, Security, Wireless

White papers 2006-02-09

Multi-Criteria Routing in Wireless Sensor-Based Pervasive Environments

Wireless sensor networks are expected to be an integral part of any pervasive computing environment. This implies an ever-increasing need for efficient energy and resource management of both the sensor nodes, as well as the overall sensor network, in order to meet the expected quality of data and service requirements....

Tags: Network, Network Service, Environment, Sensor, Wireless, Sensor Network, Networking

White papers 2005-12-01

IDEAS: Intrusion Detection Based on Emotional Ants for Sensors

Due to the wide deployment of sensor networks recently security in sensor networks has become a hot research topic. Popular ways to secure a sensor network are by including cryptographic techniques or by safeguarding sensitive information from unauthorized access/manipulation and by implementing efficient intrusion detection mechanisms. This paper proposes a...

Tags: Sensor, Sensor Network, Intrusion Detection, Network Security, Productivity, Security, Networking

White papers 2005-05-30

Energy-Efficient TCP Operation in Wireless Sensor Networks

Many applications of wireless sensor networks require connectivity to external networks to let monitoring and controlling entities communicate with the sensors. By using the TCP/IP protocols inside the sensor network, external connectivity can be achieved anywhere in the sensor network. In such IP-based sensor networks, TCP can be used for...

Tags: Network, Sensor, TCP, Wireless, Sensor Network, Tcp/Ip, Networking

White papers 2005-03-02

Towards TCP/IP for Wireless Sensor Networks

Wireless sensor networks are composed of large numbers - up to thousands - of tiny radio-equipped sensors. Every sensor has a small microprocessor with enough power to allow the sensors to autonomously form networks through which sensor information is gathered. Wireless sensor networks makes it possible to monitor places like...

Tags: TCP/IP, Network, Sensor, Sensor Network, Wi-Fi, Wireless

White papers 2005-03-01

Information Flow Based Routing Algorithms for Wireless Sensor Networks

This paper introduces a measure of information as a new criteria for the performance analysis of routing algorithms in wireless sensor networks. The paper argues that since the objective of a sensor network is to estimate a two dimensional random field, a routing algorithm must maximize information flow about the...

Tags: Algorithm, Network, Sensor, Wireless, Sensor Network, Engineering

White papers

Constructing Wireless Sensor Networks Via Effective Topology Maintenance and Querying

The ability of properly covering the terrain under investigation and collecting measurements from redundantly sensed portions of the terrain are two important objectives for monitoring applications using wireless sensor networks. Here, a new architectural view of information retrieval for XML compliant environmental monitoring applications is introduced. The sensor network is...

Tags: Network, Monitoring, Sensor, Wireless, Monitoring Application, Sensor Network

White papers

Additional Resources

Student Technology Day: Steve Ballmer Q&A

There was quite a lot to transcribe out, and many questions asked. Some questions put to Steve Ballmer, CEO of Microsoft, include: Will we always need programmers? What's Microsoft's input in Facebook and social networking? Does Microsoft have any changes in mind for their...

Tags: India, Pyramid, Laughter, Network, Microsoft Office, Steve Ballmer, Product, Microsoft Corp., Programmer, Question, Microsoft Windows, Social Networking, Operating Systems, Software, Online Communications, Marketing, Advertising & Promotion, Zack Whittaker

Blog posts 2008-10-06

46% of social networking users visited mobile social networks

According to ABI Research, 46% of those who use social networks have also visited a social network through a mobile phone. Of these, nearly 70% have visited MySpace and another 67% had visited Facebook. No other social networking site reached 15% adoption mobile adoption. SHARETHIS.addEntry( { title: "46%...

Tags: Mobile, Network, Social Networking, Online Communications, Marketing, Advertising & Promotion, AM

Blog posts 2008-10-06

LinkedIn and Xing set to benefit from downturn?

One theory: LinkedIn, the social network for "professionals", could actually be benefiting from the downturn. That's because the site's value proposition really kicks in for those that have or fear that they might about to lose their job. by Steve O'Hear

Tags: Job, LinkedIn, Benefit, Slogan, Recruitment & Selection, Human Resources, Workforce Management, Steve O\'Hear

Blog posts 2008-10-06

October promises to be hot month for Drupal, Mono, OpenOffice, Ubuntu

October is promising to be a big month for open source releases. As the page on the calendar turned, Acquia launched of its commercially supported version of the popular Drupal open source social publishing system. And over the weekend, Novell-sponsored Mono project announced the...

Tags: Mono, Ubuntu, Drupal, October, Linux, OpenOffice, .Net, Open Source, Development Tools, Operating Systems, Software, Office Suites, Software Development, Software/Web Development, Paula Rooney

Blog posts 2008-10-06

Why The Big Fuss Over Microblogs?

I microblog.Why? The truth is, I learn by doing and by speaking with others who do. So I dabble with Twitter, Plurk, Pownce, Spoink, Rakawa, Tumblr, Utterli, Yammer, FriendFeed, 12seconds, and probably a few others that I signed up for and forgot to use. I have found a nice collection...

Tags: Mobile, Fuss, Tool, Productivity, Web 2.0, Advertising & Promotion, Internet, Marketing, Gil Yehuda

Blog posts 2008-10-06