Djukic P.,Inc. and |
Mohapatra P.,University of California at Davis
IEEE Transactions on Mobile Computing | Year: 2012
We implement a new software-based multihop TDMA MAC protocol (Soft-TDMAC) with microsecond synchronization using a novel system interface for development of 802.11 overlay TDMA MAC protocols (SySI-MAC). SySI-MAC provides a kernel independent message-based interface for scheduling transmissions and sending and receiving 802.11 packets. The key feature of SySI-MAC is that it provides near deterministic timers and transmission times, which allows for implementation of highly synchronized TDMA MAC protocols. Building on SySI-MAC's predictable transmission times, we implement Soft-TDMAC, a software-based 802.11 overlay multihop TDMA MAC protocol. Soft-TDMAC has a synchronization mechanism, which synchronizes all pairs of network clocks to within microseconds of each other. Building on pairwise synchronization, Soft-TDMAC achieves tight network-wide synchronization. With network-wide synchronization independent of data transmissions, Soft-TDMAC can schedule arbitrary TDMA transmission patterns. For example, Soft-TDMAC allows schedules that decrease end-to-end delay and take end-to-end rate demands into account. We summarize hundreds of hours of testing Soft-TDMAC on a multihop testbed, showing the synchronization capabilities of the protocol and the benefits of flexible scheduling. © 2006 IEEE.
And Inc. | Date: 2004-02-24
Ampt Inc and And Llc | Date: 2010-10-12
Solar power systems and components, namely, DC/DC power converters for use with solar cells, photovoltaic modules or strings of photovoltaic modules; solar power conversion systems with data communications for use with solar cells, photovoltaic modules or strings of photovoltaic modules comprised of DC/DC power converters and electronic controllers for use with power converters; solar power systems comprising photovoltaic solar modules, housings for electronics, printed circuit boards, field effect transistors, electrical inductors, capacitors, electric resistors, microprocessor radio receivers and transmitters; software for managing solar power and photovoltaic solar modules.
Ampt Inc and And Llc | Date: 2009-02-03
Software for managing solar power and thermal solar modules. Online wholesale and retail store services featuring solar power systems and components, photovoltaic solar modules and software for managing solar power and photovoltaic solar modules; managing solar power, namely, solar energy usage management. Design of solar power systems and components and photovoltaic solar modules; managing solar power, namely, metering and monitoring solar power consumption by third parties for solar power providers; computer software design for others in the field of managing solar power and photovoltaic solar modules.
And Company | Date: 1995-03-06
candles, scented candles, aromatic candles, candle tapers, scented candle tapers, aromatic candle tapers, votive candles, miniature candles, glass container devices incorporating wicks and wax or oil as an illuminating fuel, oil and wicks for devices incorporating wicks and wax or oil as an illuminating fuel.