Welcome to CDS&N Lab.

• Collaborative Distributed Systems & Networks (CDS&N in short) Laboratory led by Prof. Dongman Lee belongs to KAIST (formerly ICU). Our laboratory has played a leading role in networking research since its foundation in 1997. The laboratory was selected as National Research Laboratory (NRL) by Korean government in 2001. Our lab members have contributed a lot in various research areas: multicast transport, mobile/wireless communications, networking support in distributed virtual environments. The current research topic of CDS&N laboratory is to study middleware for ubiquitous computing environments.

• The physical environment that we live in is steadily becoming smarter as more and more "stuff" are being embedded with computing capabilities. In other words, computing is becoming ubiquitous, and computing systems must become correspondingly seamless to keep them usable.
• Our research group focuses on the study of emergent service support for such ubiquitous computing environments. We do research and development in middleware for ubiquitous computing environments, upon which we also develop applications such as mobile social software that demonstrate support for emergent services. Our middleware for ubiquitous computing environments is composed of multiple modules which handles all the required aspects such as application management, service reconfiguration, context management, service interaction, networking, environment sensing, etc.

• We have a particular focus on application framework, service reconfiguration and networking appropriate for ubiquitous computing environments.

• Application Framework - We define Active Surroundings as a pervasive environment where entities (devices or services) actively response to user actions or help users to perform their jobs without intrusion to the users. An active surrounding is inherently composed of heterogeneous devices. Our middleware infrastructure for Active Surroundings aims to support community-centered pervasive environment where system minimizes user distraction or does not intrude users in the environment. The middleware infrastructure is composed of five components such as environment sensing, context management, dynamic adaptive framework, adaptive service discovery, and dynamic adaptive network, to enable users to be free from intrusion by system or devices. (More information)

• Service Reconfiguration - Services need to be reconfigured in ubiquitous computing environments because what a person wants and the resources required to accomplish this changes dynamically. A person's needs change all the time, and not only do people move around a great number of places in their daily lives, but even the environment in a single place can change greatly in a short amount of time. Service reconfiguration considers these changes and provides users with high-quality service by composing the diverse computing services that change dynamically. (More information)

• Networking Substrate - The networking substrate in our middleware provides efficient and effective communications between computing services based on the context of each service, each user, and the surrounding environment. (More information)