Karthik Srinivasan

A proxy based approach for pre-authentication in media independent vertical handover

With the proliferation of multiple wireless technologies and smartphones with enhanced radio capabilities, it has become imperative to deliver services that can work seamlessly across heterogeneous networks. As smartphones advance in their capabilities, there is an increasing adoption of services with realtime delivery constraints (e.g. video telephony, streaming). In a heterogeneous network environment, latencies during handoff across networks becomes a critical impediment for delivery of real-time services. An important contributor to the hand-off latency is the authentication of a mobile node with the target domain. In this paper, we propose a proxy based approach to reduce the pre-authentication latency which is also designed to operate across domains with minimal trust relationship. Our approach targets latencies attributable to computation and over-the-air communication. Our solution, based on IEEE 802.21 Media Independent Handover and using EAP-TLS as the preferred authentication scheme, provides predictable performance guarantees under widely varying network conditions.

On-Demand Health care: A new paradigm for E-Health

Communication technology has advanced significantly over the last decade enabling people to communicate anytime from anywhere using a multiplicity of devices. However, the power of this advancement in communication technology has hardly been leveraged in healthcare industry. This paper describes a solution that not only leverages the advancement in communication technology to streamline the process of connecting patients, doctors and other stakeholders in healthcare service, but also makes it economically attractive for healthcare providers to provide next-generation healthcare services to their customers in an efficient manner. Specifically, the proposed solution in this paper enables Communication Service Providers (CSPs) to work collaboratively with Health Care Providers (HCPs) to offer novel healthcare services leveraging their existing network infrastructure. This solution enables Communication Service Providers to generate new revenue without additional capital expenditure, and in addition, also enables Health Care Providers to generate additional revenue via novel healthcare service offerings to their customers without incurring any capital expenditure either. Thus, this model of offering healthcare services provides a win-win value proposition to both Communication Service Providers as well as Health Care Providers.

Context-Aware, QoE-Driven Adaptation of Multimedia Services

Delivery of multimedia services over heterogeneous wireless networks is a challenging proposition because of the diverse characteristics of the underlying wireless technologies. The problem is compounded further by the availability of a wide range of end user devices such as desktops, notebooks, tablets and smartphones. To provide a consistent and uniform Quality of Experience to the end user, we propose a context-aware service adaptation framework in this paper. The basic idea is to monitor the user and network context and leverage this information for adapting services to match the device and network characteristics.