Jayanth P. Mysore

Session aware network controlled interface selection for multihomed hosts

This paper proposes network-controlled architecture to enable multihomed devices-devices that have multiple network interfaces independently connected to different networks - to effectively use all the available interfaces. The salient features of our approach are that it is session aware, i.e. the choice of network interface is based on the network state and session characteristics. Furthermore, it does so without exposing a users location and preferences to the correspondent nodes thereby preserving user privacy. Network control using a middle-box as opposed to an end-to-end mechanism ensures fast response, optimal network use, minimal changes to end hosts and support for legacy applications and provides a detailed instantiation in the context of a SIP based call model. This paper also discusses deployment issues and details of our implementation.

A Core-Stateless Utility Based Rate Allocation Framework

In this paper, we present a core-stateless framework for allocating bandwidth to flows based on their requirements which are expressed using utility functions.The framework inherently supports flows with adaptive resource requirements and intra-flow drop priorities.The edge routers implement a labeling algorithm which in effect embeds partial information from a flows utility function in each packet. The core routers maintain no per-flow state. Forwarding decisions are based a packets label and on a threshold utility value that is dynamically computed. Thus the edge and core routers work in tandem to provide bandwidth allocations based on a flows utility function. We show how the labeling algorithm can be tailored to provide different services like weighted fair rate allocations. We then show the performance of our approach using simulations.

A reconfigurable stream orchestration framework for mobile users

We present a framework for supporting multi-device stream orchestration for mobile users. As computing power becomes cheaper and larger numbers of devices become networked, we believe that users will have access to multiple devices in their neighborhood. Such a multi-device environment presents a significantly powerful environment for mobile users compared to thin wireless clients. Our architecture enables a mobile user to treat these disparate devices as a virtually integrated entity, enabling the user to experience rich communication sessions. The framework automatically detects devices in a users neighborhood, understands their capabilities, transparently transforms content and routes a session to multiple devices based on their capabilities. We describe the problem space, our architecture and implementation experience.