Search for: All records

We introduce Liquid Data Networking (LDN), an ICN architecture that is designed to enable the benefits of erasure-code enabled object delivery. A primary contribution of this work is the introduction of SOPIs, a simple and efficient naming mechanism enabling clients to concurrently download encoded data over multiple interfaces for the same object, to optimize caching efficiency, and to enable seamless mobility. LDN offers a clean separation of security into object security and data packet security. An evaluation of the architecture and its use with various types of erasure codes is provided. 

We revisit the long-standing problem of providing network QoS to applications, and propose the concept of judicious QoS -- combining the cheaper, best effort IP service with the cloud, which offers a highly reliable infrastructure and the ability to add in-network services, albeit at higher cost. Our proposed J-QoS framework offers a range of reliability services with different cost vs. delay trade-offs, including: i) a forwarding service that forwards packets over the cloud overlay, ii) a caching service, which stores packets inside the cloud and allows them to be pulled in case of packet loss or disruption on the Internet, and iii) a novel coding service that provides the least expensive packet recovery option by combining packets of multiple application streams and sending a small number of coded packets across the more expensive cloud paths. We demonstrate the feasibility of these services using measurements from RIPE Atlas and a live deployment on PlanetLab. We also consider case studies on how J-QoS works with services up and down the network stack, including Skype video conferencing, TCP-based web transfers and cellular access networks.