Demos and Exhibits
MobiCom 2003 will include demonstrations of some of the best of state-of-the-art research in the field of mobile computing and wireless and mobile networking. The following demos have been accepted for presentation at the conference:
- The NCTUns 1.0 Network Simulator
The NCTUns 1.0 can simulate various protocols used in both wired and wireless IP networks. By using a novel simulation methodology, it provides many advantages that cannot be achieved by traditional network simulators. For example, in NCTUns 1.0, real-world TCP/IP protocol stack is directly used to generate accurate simulation results and real-world application programs are directly run on a simulated network to generate realistic traffic. The NCTUns 1.0 supports emulation. This tool is reported in IEEE Network, Vol. 17 No. 4, July 2003. As of 08/01/2003, more than 900 people/organizations from 43 countries have registered and downloaded it.
- Secure Wireless Agent Testbed (SWAT)
Gustave Anderson, Andrew Burnheimer, Kris Malfettone, Andrew Mroczkowski, Gaurav Naik
The Secure Wireless Agent Testbed (SWAT) is a system of wireless mobile devices used to study integration, networking, and information assurance. Specifically, the SWAT imposes a secure structure of groups of computing hosts and agents where access rights for suspicious hosts can be revoked and traffic re-routed adaptively at the network layer. There are many practical applications of such a system (e.g., police personnel at a sports event, medical personnel at an accident scene, emergency responders to a natural disaster). Using SWAT they will communicate and transfer information more effectively, and in ways not possible with existing technologies.
- Demo of Integrating Wireless Sensor Networks with Collaborative
Tian Lin, Yuecheng Zhang, Liang Cheng
The goal of this demo is to illustrate how wireless sensor networks can be integrated into a heterogeneous, collaborative groupware.
A wireless sensor network with five MICA MOTEs is used in this demo. Four of them act as sensing sources and the other one serves as the sink. Sensing data collected by the sink are inputs into a data-collection client, which update the collaborative information on the collaborative server (based on Habanero) so that the customized representation of the new sensing data will be shown at all other collaborative clients and PDAs.
- LocPointer: Position estimation and pointing method using angle
Yohei Iwasaki and Nobuo Kawaguchi (Nagoya University, Japan)
We propose a position estimation and pointing method using angle sensor device. In this method, a user can select a distance device by directly pointing it with the client terminal without thinking about an address or name of the target device. The terminal is called LocPointer that has an angle sensor device, which consists of a magnetic compass and accelerometer. A user measures azimuths toward several markers to estimate his position, so that the client terminal doesn't have to equip an additional positioning sensor. It uses the identity of wireless LAN base-station that provides rough position information, which can limit the number of marker colors that the user must input.
- The FleetNet Demonstrator
Holger Füßler, Hannes Hartenstein, Walter Franz, Wilfried Enkelmann, Michael Möske, and Christian Wagner
The FleetNet project develops a platform for inter-vehicle communications based on ad hoc networking principles. Within this project a fleet of DaimlerChrysler Smart Cars equipped with communication and positioning technology is used to demonstrate the FleetNet platform. The cars provide - among other things - IEEE 802.11a/b radio hardware with multi-hop capability based on position-based routing running on Linux and a touch-screen user interface for the demo applications.
The goal of this demo is to present an overview of the system design, the practical implementation efforts and some experiences and results gained in the process of building and testing this real-world ad hoc network demonstrator. We will also demonstrate some example applications for inter-vehicle communications that make use of positional information as provided by the platform.
- N-1 Network Simulation: A Mixed-Reality Approach for
Wireless Ad-hoc Network Performance Evaluation
Nobuhiko Nishio, Eiji Takimoto, and Gaute Lambertsen
Performance evaluation of wireless ad-hoc network is done by simulation since preparing numerous mobile nodes and thousands of trials for performance evaluation are almost impossible. Therefore, we are engaged in a project to develop a mixed reality N-1 simulation environment where one actual node in the real world and N-1 virtual nodes in the simulated world interact. Virtual nodes send and receive packets in the simulated world, but packets that are sent to the real world node are generated in the real network interface and sent to the real world. Furthermore, packets sent from the real node are injected into the simulated environment in order to make both segments interact with each other. This constellation can then be used to evaluate the implementation performance of the network system that is installed on the real node.
- Ad-Hoc Positioning System
Dragos Niculescu, Michael Pagliorola, Andrew Tjang, Tarak Mehta, Hiral Patel
Ad-Hoc Positioning System is an extension of distance vector routing and GPS localization which can be used for the self localization of ad-hoc networks. This demonstration will show APS's DV_HOP algorithm in a dense multi hop network of Berkeley's mica motes. The motes will calculate their relative distance from anchor nodes in terms of hops and then find their position. The network will be arranged in a grid, for ease of verifying localization which is aided by a custom GUI which queries the motes for their location after they localize and then displays them on screen.
- MANTIS: System Support for MultimodAl NeTworks of In-situ
Rick Han (University of Colorado at Boulder)
The MANTIS project has designed a single-board sensor node called the MANTIS Nymph for rapid prototyping and ease of use. For this demo, we will demonstrate basic capabilities of the MANTIS system via remote control of mobile robots using MANTIS Nymphs that run the MANTIS OS. A multi-hop mobile wireless sensor network will be constructed, in which each of the robots in the sensor network is attached to a Nymph. Commands to remotely control each robot are routed over the multi-hop network of Nymph robots via the Nymph multi-channel radios. Viewers will be able to participate in a game of battling robots built on top of the Nymph-enabled mobile sensor network. The scenario will demonstrate the fully functioning MOS sensor OS, a fully functioning network stack with multi-hop routing over the Nymph's CC1000 multi-channel radio, as well as a fully functioning hardware Nymph.
- Distributed Task Execution in Mobile Ad Hoc Networks using
Attributed Task Graphs
Prithwish Basu (BBN Technologies); and Wang Ke, Salma Abu Ayyash, and Thomas D.C. Little (Boston University)
Distributed tasks executed on MANETs must cope with mobility and failures inherent in such environments. We have developed a flexible application execution framework and model called "attributed task graph" which advocates decoupling of a task's logical structure from the physical devices which can participate in its execution. The protocols in the framework perform dynamic discovery of necessary resources and adapt to resource unavailability caused by node mobility and failures. We will illustrate the above concepts by demonstrating a simple polling application on a modest MANET consisting of notebook and handheld computers; a user wishes to poll devices in the network that satisfy certain profiles/constraints. The poll is represented as a task graph whose nodes possess attributes such as location and personal profiles of pollees. We will demonstrate how our protocols are able to discover the necessary resources (pollees), conduct the poll, and seamlessly respond to task disruptions caused by mobility/failures.
- Demo of a Multipath Video Streaming Testbed for Ad Hoc Networks
Shiwen Mao, Shunan Lin, Shivendra S. Panwar, and Yao Wang
Enabling video transport over ad hoc networks is more challenging than over other wireless networks. The wireless links in an ad hoc network are highly error prone and can go down frequently because of node mobility, interference, channel fading, and the lack of infrastructure. However, the mesh topology of ad hoc networks implies the existence of multiple paths between two nodes. Indeed, multipath transport provides an extra degree of freedom in designing error resilient video coding and transport schemes.
In our previous work, we propose schemes combining multistream coding with multipath transport, to show that path diversity provides an effective means to combat transmission error in ad hoc networks. We demonstration the implementation of an multiple path video streaming testbed using notebook computers and IEEE 802.11b cards, to validate the viability and performance advantages of these schemes. We implemented a layered coding with selective ARQ scheme and a multiple description motion compensation coding scheme in the testbed. The experimental results show that video transport is viable in ad hoc networks given careful cross-layer design. Combining multistream coding with MPT improves video quality, as compared to traditional schemes where a single path is used.
- MAYA: A multi-paradigm network modeling framework
Junlan Zhou, Zhengrong Ji, Mineo Takai, Rajive Bagrodia
Discrete event simulation has been widely used for studying behaviors of networks. However, its scalability is limited and most of the existing simulation tools use abstract often statistics based application models, which do not capture the adaptive aspects present in most nowadays applications. In Mobicom'03, we are going to demonstrate MAYA, a framework integrating discrete event simulation, analytical model and physical network interface. The inherited parallism of this framework and a combination of analytical model with discrete event simulator lead to a significant reduction of the execution time of the network model while maintaining the high fidelities of the model. The ability of running operational software on top of a simulated network in this framework allows us to model the closed loop interactions between the applications and the network, and perform online control and predictions of networks.
- AT&T Intelligent Network Card: Foundation for a New Mobile
Hui Luo, Paul Henry, Byoung-Jo "J" Kim, N. K. Shankaranarayanan (AT&T Labs-Research)
The AT&T Intelligent Network Card or "iCard" is an intelligent network interface card with an embedded Linux host. It appears as a standard Ethernet PCMCIA card to a mobile device, and accepts standard CompactFlash (CF) cards for network connectivity. Acting as a IP-layer network node, iCard is a foundation for developing various advanced networking and application support features, particularly in the area of convenient secure mobile connectivity. These features are independent of the operating system of the mobile device. We will demonstrate working prototypes of iCard with 802.11b WLAN/Ethernet/dial-up connectivity, and our implementations of IPsec VPN security, and management/provisioning of multiple access networks.
We are also planning an Expo at MobiCom 2003 featuring exhibits of the latest mobile computing products and services. Come see first-hand and find out about breakthroughs in mobile networks, systems, and applications for mobile computing. Meet with the people and companies who are designing and developing the new mobile systems and setting the standards.
There is still time to exhibit your product or service in the MobiCom 2003 Expo. If you are interested, please contact the Research Demo Chair, David Maltz, at firstname.lastname@example.org. Please also check our Corporate Supporters page for information on how to support the conference and receive a free Expo booth, web promotion, and complimentary registration for the conference.