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Welcome!
WHYNET is a hybrid wireless testbed environment aimed at
realistic, scalable and flexible evaluation of next-generation wireless
communication technologies and applications. To meet the diverse
experimentation needs of wireless network research, WHYNET provides a
wide range of experimentation modes aided by its unique capability to
seamlessly integrate physical, simulation and emulated components.
Beyond the traditional methods of physical experimentation and
simulation, WHYNET framework supports several hybrid modes
of experimentation (including emulation) that use physical and
simulated elements (e.g., protocol layers, subnets) in different
combinations. The high degree of flexibility in the choice of
experimentation mode with WHYNET permits the user in making an
appropriate tradeoff between realism, experimental control, scalability
and cost depending on the evaluation requirements and available testbed
resources.
Key ingredients of the WHYNET testbed infrastructure include:
- TWINE, a novel hybrid emulation framework with two distinct capabilities: (i) seamlessly integrate emulation, simulation and physical testbeds for greater scalability or realism; (ii) high-fidelity radio and channel emulation in real time.
- Novel simulation frameworks and models for realistic and scalable evaluation of cutting-edge wireless network scenarios and technologies (e.g., sQualNet, SCTP, UWB).
- Heterogeneous and geographically distributed set of
physical wireless testbeds spanning 802.11-based networks (wireless
LANs, mesh networks, MANETs, VANETs), sensor networks, CDMA2000
cellular system, novel SDR and MIMO platforms, and UWB devices.
- A hardware-based channel emulator from Propsim that
provides detailed and real-time signal-level channel emulation
capability for controlled, yet highly realistic experimentation with
real radio devices in small-scale settings.
WHYNET testbed components are being used in a number of
evaluation studies including the impact of cross-layer interactions
on application-level performance in heterogeneous and large-scale
wireless network scenarios. For publications providing detailed
description on the design and use of WHYNET testbed components, please
click here. WHYNET testbed software and tools, models and
implementations, measurement traces are being made publicly available
to the research community via the repository. Limited remote access to
WHYNET testbed infrastructure will be provided via this link.
The WHYNET project is a multi-university collaborative effort involving
CS and EE faculty from five UC campuses (UCLA, UCSB, UCR, UCD, UCSD),
USC and Univ. of Delaware. Funding for this project is provided by the National
Science Foundation (NSF) under the Network Research Testbeds (NRT)
program.
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