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Displaying 1-50 out of 82 total
Advanced Indexing Techniques for Wide-Area Network Monitoring
Found in: Data Engineering Workshops, 22nd International Conference on
By Xin Li, Fang Bian, Hui Zhang, Christophe Diot, Ramesh Govindan, Wei Hong Hong, Gianluca Lannaccone
Issue Date:April 2005
pp. 1184
Detecting and unraveling incipient coordinated attacks on Internet resources requires a distributed network monitoring infrastructure. Such an infrastructure will have two logically distinct elements: distributed monitors that continuously collect packet a...
 
Editorial: A Message from the Outgoing Editor-in-Chief and Associate Editor-in-Chief
Found in: IEEE Transactions on Mobile Computing
By Ramesh Govindan,Ram Ramanathan
Issue Date:January 2014
pp. 1
No summary available.
 
Interplay of Failure Rate, Performance, and Test Cost in TCAM under Process Variations
Found in: 2013 22nd Asian Test Symposium (ATS)
By Hsunwei Hsiung,Da Cheng,Bin Liu,Ramesh Govindan,Sandeep K. Gupta
Issue Date:November 2013
pp. 251-258
As process variations grow with technology scaling, failure rates increase and are predicted to be so high as to render devices unusable for computing domain. In order to continue to benefit from scaling, three dimensions can be explored: increasing operat...
 
A New March Test for Process-Variation Induced Delay Faults in SRAMs
Found in: 2013 22nd Asian Test Symposium (ATS)
By Da Cheng,Hsunwei Hsiung,Bin Liu,Jianing Chen,Jia Zeng,Ramesh Govindan,Sandeep K. Gupta
Issue Date:November 2013
pp. 115-122
Process variations are growing with technology scaling towards nano-scale. This brings new challenges to the design of memory modules, which are often the first circuits to be fabricated using a new technology and usually designed with critical timing. We ...
 
Editorial: Reviewer Appreciation Program
Found in: IEEE Transactions on Mobile Computing
By Ramesh Govindan,Ram Ramanathan
Issue Date:August 2013
pp. 1469
Two constituencies form the backbone of a journal and act as stewards of its quality. One is the Editorial Board, whose judgments on the quality of manuscripts shape a journal signifi cantly and set the tone for its direction. Equally important, but perhap...
 
Editorial and changes to the Editorial Board
Found in: IEEE Transactions on Mobile Computing
By Ramesh Govindan,Ram Ramanathan
Issue Date:January 2013
pp. 1-6
Our editorial board continues to perform outstanding service to the mobile computing community, and for this we are very grateful. The board has evolved this year, and we take this opportunity to welcome several new Associate Editors: Prithwish Basu, Carla...
 
Distortion-Resilient Routing for Video Flows in Wireless Multi-hop Networks
Found in: 2012 20th IEEE International Conference on Network Protocols (ICNP)
By George Papageorgiou,Shailendra Singh,Srikanth V. Krishnamurthy,Ramesh Govindan,Tom La Porta
Issue Date:October 2012
pp. 1-10
Traditional routing metrics designed for wireless networks are application agnostic. In this paper, we consider a wireless network where the application flows consist of video traffic. From a user-perspective, reducing the level of video distortion is crit...
 
Forensic analysis of packet losses in wireless networks
Found in: 2012 20th IEEE International Conference on Network Protocols (ICNP)
By Jianxia Ning,Shailendra Singh,Konstantinos Pelechrinis,Bin Liu,Srikanth V. Krishnamurthy,Ramesh Govindan
Issue Date:October 2012
pp. 1-10
Due to the lossy nature of wireless links, it is difficult to determine if packet losses are due to wireless-induced effects or from malicious discarding. Many prior efforts on detecting malicious packet drops rely on evidence collected via passive monitor...
 
Editorial and Changes to the Editorial Board
Found in: IEEE Transactions on Mobile Computing
By Ramesh Govindan,Ram Ramanathan
Issue Date:January 2012
pp. 1-4
No summary available.
 
Editorial
Found in: IEEE Transactions on Mobile Computing
By Ramesh Govindan,Ram Ramanathan
Issue Date:December 2011
pp. 1665-1665
No summary available.
 
Changes to TMC and its Editorial Board
Found in: IEEE Transactions on Mobile Computing
By Ramesh Govindan
Issue Date:May 2011
pp. 609-611
No summary available.
 
Deriving State Machines from TinyOS Programs Using Symbolic Execution
Found in: International Conference on Information Processing in Sensor Networks
By Nupur Kothari, Todd Millstein, Ramesh Govindan
Issue Date:April 2008
pp. 271-282
The most common programming languages and platforms for sensor networks foster a low-level programming style. This design provides fine-grained control over the underlying sensor devices, which is critical given their severe resource constraints. However, ...
 
Monitoring Civil Structures with a Wireless Sensor Network
Found in: IEEE Internet Computing
By Krishna Chintalapudi, Tat Fu, Jeongyeup Paek, Nupur Kothari, Sumit Rangwala, John Caffrey, Ramesh Govindan, Erik Johnson, Sami Masri
Issue Date:March 2006
pp. 26-34
Structural health monitoring (SHM) is an active area of research devoted to systems that can autonomously and proactively assess the structural integrity of bridges, buildings, and aerospace vehicles. Recent technological advances promise the eventual abil...
 
Energy-Efficient Data Organization and Query Processing in Sensor Networks
Found in: Data Engineering, International Conference on
By Ramakrishna Gummadi, Xin Li, Ramesh Govindan, Cyrus Shahabi, Wei Hong
Issue Date:April 2005
pp. 157-158
Recent sensor networks research has produced a class of data storage and query processing techniques called Data-Centric Storage that leverages locality-preserving distributed indexes to efficiently answer multi-dimensional range and range-aggregate querie...
   
Performance Preserving Network Downscaling
Found in: Simulation Symposium, Annual
By Fragkiskos Papadopoulos, Konstantinos Psounis, Ramesh Govindan
Issue Date:April 2005
pp. 285-294
<p>The Internet is a large, complex, heterogeneous system operating at very high speeds and consisting of a large number of users. Researchers use a suite of tools and techniques in order to understand the performance of networks: measurements, simul...
 
Using More Realistic Data Models to Evaluate Sensor Network Data Processing Algorithms
Found in: Local Computer Networks, Annual IEEE Conference on
By Yan Yu, Deborah Estrin, Mohammad Rahimi, Ramesh Govindan
Issue Date:November 2004
pp. 569-570
Due to lack of experimental data and sophisticated models derived from such data, most data processing algorithms from the sensor network literature are evaluated with data generated from simple parametric models. Unfortunately, the type of data input used...
   
Impact of Network Density on Data Aggregation in Wireless Sensor Networks
Found in: Distributed Computing Systems, International Conference on
By Chalermek Intanagonwiwat, Deborah Estrin, Ramesh Govindan, John Heidemann
Issue Date:July 2002
pp. 457
No summary available.
   
Timely Report Delivery in Social Swarming Applications
Found in: Distributed Computing in Sensor Systems and Workshops, International Conference on
By Bin Liu,Peter Terlecky,Xing Xu,Amotz Bar-Noy,Ramesh Govindan,Dror Rawitz
Issue Date:May 2012
pp. 75-82
In social swarming applications, participants equipped with 3G and WiFi-capable smart phones are tasked to provide reports (possibly voluminous ones that include full-motion video) about their immediate environment to a central coordinator. In this paper, ...
 
Optimizing Information Credibility in Social Swarming Applications
Found in: IEEE Transactions on Parallel and Distributed Systems
By Bin Liu,Peter Terlecky,Amotz Bar-Noy,Ramesh Govindan,Micheal J. Neely,Dror Rawitz
Issue Date:June 2012
pp. 1147-1158
With the advent of smartphone technology, it has become possible to conceive of entirely new classes of applications. Social swarming, in which users armed with smartphones are directed by a central director to report on events in the physical world, has s...
 
Editorial: A Message from the New Editor-in-Chief
Found in: IEEE Transactions on Mobile Computing
By Ramesh Govindan
Issue Date:January 2011
pp. 2
No summary available.
 
Embedded Sensing of Structures: A Reality Check
Found in: Real-Time Computing Systems and Applications, International Workshop on
By Krishna Chintalapudi, Jeongyeup Paek, Nupur Kothari, Sumit Rangwala, Ramesh Govindan, Erik Johnson
Issue Date:August 2005
pp. 95-101
With the advent of miniaturized sensing technology, it has become possible to envision smart structures containing millions of sensors embedded in concrete for autonomously detecting and locating incipient damage. Where are we today in our march towards th...
 
The Temporal and Topological Characteristics of BGP Path Changes
Found in: Network Protocols, IEEE International Conference on
By Di-Fa Chang, Ramesh Govindan, John Heidemann
Issue Date:November 2003
pp. 190
BGP has been deployed in Internet for more than a decade. However, the events that cause BGP topological changes are not well understood. Although large traces of routing updates seen in BGP operation are collected by RIPE RIS and University of Oregon Rout...
 
COSSACK: Coordinated Suppression of Simultaneous Attacks
Found in: DARPA Information Survivability Conference and Exposition,
By Christos Papadopoulos, Robert Lindell, John Mehringer, Alefiya Hussain, Ramesh Govindan
Issue Date:April 2003
pp. 2
DDoS attacks are highly distributed, well coordinated, offensive assaults on services, hosts, and infrastructure of the Internet. Effective defensive countermeasures to DDoS attacks will require equally sophisticated, well coordinated, monitoring, analysis...
 
COSSACK: Coordinated Suppression of Simultaneous Attacks
Found in: DARPA Information Survivability Conference and Exposition,
By Christos Papadopoulos, Robert Lindell, John Mehringer, Alefiya Hussain, Ramesh Govindan
Issue Date:April 2003
pp. 94
DDoS attacks are highly distributed, well coordinated, offensive assaults on services, hosts, and infrastructure of the Internet. Effective defensive countermeasures to DDoS attacks will require equally sophisticated, well coordinated, monitoring, analysis...
 
Data Extrapolation in Social Sensing for Disaster Response
Found in: 2014 IEEE International Conference on Distributed Computing in Sensor Systems (DCOSS)
By Siyu Gu,Chenji Pan,Hengchang Liu,Shen Li,Shaohan Hu,Lu Su,Shiguang Wang,Dong Wang,Tanvir Amin,Ramesh Govindan,Charu Aggarwal,Raghu Ganti,Mudhakar Srivatsa,Amotz Barnoy,Peter Terlecky,Tarek Abdelzaher
Issue Date:May 2014
pp. 119-126
This paper complements the large body of social sensing literature by developing means for augmenting sensing data with inference results that "fill-in" missing pieces. Unlike trend-extrapolation methods, we focus on prediction in disaster scenar...
 
The Information Funnel: Exploiting Named Data for Information-Maximizing Data Collection
Found in: 2014 IEEE International Conference on Distributed Computing in Sensor Systems (DCOSS)
By Shiguang Wang,Tarek Abdelzaher,Santhosh Gajendran,Ajith Herga,Sachin Kulkarni,Shen Li,Hengchang Liu,Chethan Suresh,Abhishek Sreenath,Hongwei Wang,William Dron,Alice Leung,Ramesh Govindan,John Hancock
Issue Date:May 2014
pp. 92-100
This paper describes the exploitation of hierarchical data names to achieve information-utility maximizing data collection in social sensing applications. We describe a novel transport abstraction, called the information funnel. It encapsulates a data coll...
 
Editorial and Changes to the Editorial Board
Found in: IEEE Transactions on Mobile Computing
By Ramesh Govindan,Ram Ramanathan
Issue Date:December 2013
pp. 2317-2321
No summary available.
 
Resource/accuracy tradeoffs in software-defined measurement
Found in: Proceedings of the second ACM SIGCOMM workshop on Hot topics in software defined networking (HotSDN '13)
By Masoud Moshref, Minlan Yu, Ramesh Govindan
Issue Date:August 2013
pp. 73-78
Previous work on network measurements have explored several primitives of increasing complexity for measurement tasks at individual nodes, ranging from counters to hashing to arbitrary code fragments. In an SDN network, these primitives may require signifi...
     
Reducing web latency: the virtue of gentle aggression
Found in: Proceedings of the ACM SIGCOMM 2013 conference on SIGCOMM (SIGCOMM '13)
By Andreas Terzis, Ankur Jain, Barath Raghavan, Ethan Katz-Bassett, Nandita Dukkipati, Neal Cardwell, Ramesh Govindan, Shuai Hao, Tobias Flach, Yuchung Cheng
Issue Date:August 2013
pp. 159-170
To serve users quickly, Web service providers build infrastructure closer to clients and use multi-stage transport connections. Although these changes reduce client-perceived round-trip times, TCP's current mechanisms fundamentally limit latency improvemen...
     
Calculating source line level energy information for Android applications
Found in: Proceedings of the 2013 International Symposium on Software Testing and Analysis (ISSTA 2013)
By Ding Li, Ramesh Govindan, Shuai Hao, William G. J. Halfond
Issue Date:July 2013
pp. 78-89
The popularity of mobile apps continues to grow as developers take advantage of the sensors and data available on mobile devices. However, the increased functionality comes with a higher energy cost, which can cause a problem for users on battery constrain...
     
Cloud-enabled privacy-preserving collaborative learning for mobile sensing
Found in: Proceedings of the 10th ACM Conference on Embedded Network Sensor Systems (SenSys '12)
By Bin Liu, Fei Sha, Ramesh Govindan, Yurong Jiang
Issue Date:November 2012
pp. 57-70
In this paper, we consider the design of a system in which Internet-connected mobile users contribute sensor data as training samples, and collaborate on building a model for classification tasks such as activity or context recognition. Constructing the mo...
     
Quantifying violations of destination-based forwarding on the internet
Found in: Proceedings of the 2012 ACM conference on Internet measurement conference (IMC '12)
By Ethan Katz-Bassett, Ramesh Govindan, Tobias Flach
Issue Date:November 2012
pp. 265-272
Initially, packet forwarding in the Internet was destination-based -- that is, a router would forward all packets with the same destination address to the same next hop. In this paper, we use active probing methods to quantify and characterize deviations f...
     
Demo: Medusa: a programming framework for crowd-sensing applications
Found in: Proceedings of the 10th international conference on Mobile systems, applications, and services (MobiSys '12)
By Bin Liu, Moo-Ryong Ra, Ramesh Govindan, Tom F. La Porta
Issue Date:June 2012
pp. 481-482
The ubiquity of smartphones and their on-board sensing capabilities motivates crowd-sensing, a capability that harnesses the power of crowds to collect sensor data from a large number of mobile phone users. Unlike previous work on wireless sensing, crowd-s...
     
Medusa: a programming framework for crowd-sensing applications
Found in: Proceedings of the 10th international conference on Mobile systems, applications, and services (MobiSys '12)
By Bin Liu, Moo-Ryong Ra, Ramesh Govindan, Tom F. La Porta
Issue Date:June 2012
pp. 337-350
The ubiquity of smartphones and their on-board sensing capabilities motivates crowd-sensing, a capability that harnesses the power of crowds to collect sensor data from a large number of mobile phone users. Unlike previous work on wireless sensing, crowd-s...
     
PhotoNet+: outlier-resilient coverage maximization in visual sensing applications
Found in: Proceedings of the 11th international conference on Information Processing in Sensor Networks (IPSN '12)
By Arun Iyengar, Md Tanvir Al Amin, Md Yusuf Sarwar Uddin, Ramesh Govindan, Tarek Abdelzaher
Issue Date:April 2012
pp. 143-144
This demonstration illustrates a service for collection and delivery of images, in participatory camera networks, to maximize coverage while removing outliers (i.e., irrelevant images). Images, such as those taken by smart-phone users, represent an importa...
     
Snooze: energy management in 802.11n WLANs
Found in: Proceedings of the Seventh COnference on emerging Networking EXperiments and Technologies (CoNEXT '11)
By Anmol Sheth, Ki-Young Jang, Ramesh Govindan, Shuai Hao
Issue Date:December 2011
pp. 1-12
Increasingly, mobile devices equipped with 802.11n interfaces are being used for a wide variety of applications including bandwidth-intensive HD video streaming. Recent work has shown that 802.11n interfaces are power-hungry, so energy management is an imp...
     
CarMA: towards personalized automotive tuning
Found in: Proceedings of the 9th ACM Conference on Embedded Networked Sensor Systems (SenSys '11)
By Christopher Riesz, Luis Pedrosa, Nilesh Mishra, Ramesh Govindan, Tobias Flach
Issue Date:November 2011
pp. 135-148
Wireless sensing and actuation have been explored in many contexts, but the automotive setting has received relatively little attention. Automobiles have tens of onboard sensors and expose several hundred engine parameters which can be tuned (a form of act...
     
Finding protocol manipulation attacks
Found in: Proceedings of the ACM SIGCOMM 2011 conference on SIGCOMM (SIGCOMM '11)
By Madanlal Musuvathi, Nupur Kothari, Ramesh Govindan, Ratul Mahajan, Todd Millstein
Issue Date:August 2011
pp. 26-37
We develop a method to help discover manipulation attacks in protocol implementations. In these attacks, adversaries induce honest nodes to exhibit undesirable behaviors by misrepresenting their intent or network conditions. Our method is based on a novel ...
     
Energy-efficient positioning for smartphones using Cell-ID sequence matching
Found in: Proceedings of the 9th international conference on Mobile systems, applications, and services (MobiSys '11)
By Jatinder P. Singh, Jeongyeup Paek, Kyu-Han Kim, Ramesh Govindan
Issue Date:June 2011
pp. 293-306
Many emerging location-aware applications require position information. However, these applications rarely use celltower-based localization because of its inaccuracy, preferring instead to use the more energy-hungry GPS. In this paper, we present CAPS, a C...
     
Odessa: enabling interactive perception applications on mobile devices
Found in: Proceedings of the 9th international conference on Mobile systems, applications, and services (MobiSys '11)
By Anmol Sheth, David Wetherall, Lily Mummert, Moo-Ryong Ra, Padmanabhan Pillai, Ramesh Govindan
Issue Date:June 2011
pp. 43-56
Resource constrained mobile devices need to leverage computation on nearby servers to run responsive applications that recognize objects, people, or gestures from real-time video. The two key questions that impact performance are what computation to offloa...
     
Liquidity in credit networks: a little trust goes a long way
Found in: Proceedings of the 12th ACM conference on Electronic commerce (EC '11)
By Ashish Goel, Ian Post, Pranav Dandekar, Ramesh Govindan
Issue Date:June 2011
pp. 147-156
Credit networks represent a way of modeling trust between entities in a network. Nodes in the network print their own currency and trust each other for a certain amount of each other's currency. This allows the network to serve as a decentralized payment i...
     
Simple yet efficient, transparent airtime allocation for TCP in wireless mesh networks
Found in: Proceedings of the 6th International COnference (Co-NEXT '10)
By Ki-Young Jang, Konstantinos Psounis, Ramesh Govindan
Issue Date:November 2010
pp. 1-12
In this paper, we explore a simple yet effective technique for explicitly allocating airtime to each active pair of communicating neighbors in a wireless neighborhood so that TCP starvation in a wireless mesh network is avoided. Our explicit allocation is ...
     
Personal data vaults: a locus of control for personal data streams
Found in: Proceedings of the 6th International COnference (Co-NEXT '10)
By Deborah Estrin, Jeff Burke, Katie Shilton, Mark Hansen, Min Mun, Nilesh Mishra, Ramesh Govindan, Shuai Hao
Issue Date:November 2010
pp. 1-12
The increasing ubiquity of the mobile phone is creating many opportunities for personal context sensing, and will result in massive databases of individuals' sensitive information incorporating locations, movements, images, text annotations, and even healt...
     
RCRT: Rate-controlled reliable transport protocol for wireless sensor networks
Found in: ACM Transactions on Sensor Networks (TOSN)
By Jeongyeup Paek, Ramesh Govindan
Issue Date:September 2010
pp. 1-45
Emerging high-rate applications (imaging, structural monitoring, acoustic localization) will need to transport large volumes of data concurrently from several sensors. These applications are also loss-intolerant. A key requirement for such applications, th...
     
ASTUTE: detecting a different class of traffic anomalies
Found in: Proceedings of the ACM SIGCOMM 2010 conference on SIGCOMM (SIGCOMM '10)
By Christophe Diot, Fernando Silveira, Nina Taft, Ramesh Govindan
Issue Date:August 2010
pp. 112-ff
When many flows are multiplexed on a non-saturated link, their volume changes over short timescales tend to cancel each other out, making the average change across flows close to zero. This equilibrium property holds if the flows are nearly independent, an...
     
The Tenet architecture for tiered sensor networks
Found in: ACM Transactions on Sensor Networks (TOSN)
By August Joki, Ben Greenstein, Deborah Estrin, Eddie Kohler, Jeongyeup Paek, John Hicks, Ki-Young Jang, Marcos Vieira, Omprakash Gnawali, Ramesh Govindan
Issue Date:July 2010
pp. 1-44
Most sensor network research and software design has been guided by an architectural principle that permits multinode data fusion on small-form-factor, resource-poor nodes, or motes. While we were among the earliest promoters of this approach, through expe...
     
Sensor faults: Detection methods and prevalence in real-world datasets
Found in: ACM Transactions on Sensor Networks (TOSN)
By Abhishek B. Sharma, Leana Golubchik, Ramesh Govindan
Issue Date:June 2010
pp. 1-39
Various sensor network measurement studies have reported instances of transient faults in sensor readings. In this work, we seek to answer a simple question: How often are such faults observed in real deployments? We focus on three types of transient...
     
Online optimization of 802.11 mesh networks
Found in: Proceedings of the 5th international conference on Emerging networking experiments and technologies (CoNEXT '09)
By Georgios Sotiropoulos, Ramesh Govindan, Roch Guerin, Theodoros Salonidis
Issue Date:December 2009
pp. 61-72
802.11 wireless mesh networks are ubiquitous, but suffer from severe performance degradations due to poor synergy between the 802.11 CSMA MAC protocol and higher layers. Several solutions have been proposed that either involve significant modifications to ...
     
Discovering semantically meaningful places from pervasive RF-beacons
Found in: Proceedings of the 11th international conference on Ubiquitous computing (Ubicomp '09)
By Deborah Estrin, Donnie H. Kim, Jeffrey Hightower, Ramesh Govindan
Issue Date:September 2009
pp. 21-30
Detecting visits to semantically meaningful places is important for many emerging mobile applications. We present PlaceSense, a place discovery algorithm suitable for mobile devices that exploits pervasive RF-beacons. By relying on separate mechanisms to d...
     
Dynamic data compression in multi-hop wireless networks
Found in: Proceedings of the eleventh international joint conference on Measurement and modeling of computer systems (SIGMETRICS '09)
By Abhishek B. Sharma, Leana Golubchik, Michael J. Neely, Ramesh Govindan
Issue Date:June 2009
pp. 159-162
Data compression can save energy and increase network capacity in wireless sensor networks. However, the decision of whether and when to compress data can depend upon platform hardware, topology, wireless channel conditions, and application data rates. Usi...
     
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