OceanStore is a utility infrastructure designed to span the globe and provide continuous access to persistent information. Since this infrastructure is comprised of untrusted servers, data is protected through redundancy and cryptographic techniques. To improve performance, data is allowed to be cached anywhere, anytime. Finally, monitoring of usage patterns allows adaptation to regional outage...

frastructure is still lacking. We propose Globe: a novel scalable infrastructure for a massive worldwide distributed system. Currently, designers build applications on top of a limited number of communication services. On the Internet, for example, this means that applications communicate mainly through transmissioncontrol protocol (TCP) connections, but otherwise must implement all additional ...

This thesis describes Pastwatch, a distributed version control system. Pastwatch maintains versions of users’ shared files. Each version is immutable: to make changes, a user checks out a version onto the user’s computer, edits the files locally, then commits the changes to create a new version. The motivation behind Pastwatch is to support wide-area read/write file sharing. An example of this ...

Building a wide area group communication system is a challenge. This paper presents the design and protocols of the Spread wide area group communication system. Spread integrates two low-level protocols: one for local area networks called Ring, and one for the wide area network connecting them, called Hop. Spread decouples the dissemination and local reliability mechanisms from the global order...

This report describes the key elements and results of Stanford University’s contribution to the development of the Wide Area Augmentation System (WAAS) and its underlying technologies. The Wide Area Augmentation System (WAAS) became the first operational space based augmentation system (SBAS) in July 2003. WAAS augments the Global Positioning System (GPS) with the following three services: inte...

Some applications, including disaster monitoring and recovery networks, use low-power wide-area networks (LPWAN). LPWAN sensors capture data bits and transmit them to public carrier networks (e.g., cellular networks) via dedicated gateways. One of the challenges encountered in disaster management scenarios revolves around the carry/forward sensed data and geographical location information disse...

To prevent a power grid from having disturbances that may, in a worst case scenario, blackout entire countries, Transmission System Operators (TSO) want to be able to see what happens in different parts of the network faster, to have time to do the necessary changes and regulate the power grid. For this reason, a new technology called PMU-based Wide Area Monitoring System (WAMS) has been introd...