The Architecture of a Mobile Internet

In this paper, we outline the next major evolution of the Internet architecture, where support for mobility is not the exception but the typical case. We show which parts of the Internet architecture needs to be extended, how they interact, and why they are needed. We point out the suitability of especially license free radio access equipment not only technically, but as a well harmonizing piece in the non-centralized and distributed way that Internet grows. We show that a wired Internet supporting mobility drastically changes the market situation in the mobile and wireless sector, possibly to a level where special mobile operators are not needed. We show that this leads to a situation where wireless and mobile access is just as inexpensive as its wired counterpart 1. Mobile Internet: What is it? The answer is not self-evident, and will differ significantly whether you ask someone from the Internet or from the mobile phone community. This is understandable, since the differences in view between those communities is wide, and is not only a question of protocols and technologies, (like the classic argument between circuit and packet orientation), but also of the basic principles of systems construction: distributed and non-hierarchical or centralized and hierarchical, equal access open services or closed islands, (sometimes called walled gardens). The question even reaches on to regulation and the role of government, and is thereby also a political one. The difference in culture between original Internet community and traditional operator approach is real and important, and can be characterized as in the following table: Internet- but wireless and mobile

The CDT mStar environment: Scalable Distributed Teamwork in action

This paper presents the mStar environment, which creates an environment for truly scalable distributed teamwork. It can be and is being used on a daily basis for electronic meetings, distributed electronic education and daily work. It creates a new teamwork environment which allows users to collaborate even if they are not present at the same physical location. The mStar environment includes: the multicast WhiteBoard- mWB, which allows for collaborative reviewing of text and images; mChat, which allows for text based group chat; mVote, which allows for distributed voting and mWeb for shared WWW objects. These are all desktop and IP-multicast based and symmetric. The mStar environment also includes mMOD, which is a VCR-like tool for recording and playback of teamwork sessions, and mTunnel, which is an application for handling IP-multicast traffic on narrow links in the network (such as ISDN/modem) and network segments that does not support IP-multicast.. It allows for scaling and transforming of the network based data in various ways. Keywords: IP-multicast, desktop conferencing, distributed presentations, digital recoding, teamwork, distance education, better-than-being-there

mStar: enabling collaborative applications on the Internet

The mStar environment features an agent-based architecture, implemented in Java, which preserves compatibility with the dominant Mbone paradigm for IP multicast. In particular, mStar supports developers in creating distributed, real-time multimedia software applications such as e-meetings.Validerad; 2000; 20060922 (ysko)</p

Webdesk : the tele-conferencing service of mates

A paper describing early results of the WebDesk development within the Mates-project, Summer 1995. Presented at the Second International SMAC Workshop, November 1995.Also presented at BOF: Towards a Real-Time Multimedia Web, December 1995Godkänd; 1995; 20070404 (heering)</p

WebDesk - Collaboration Support in MATES

Combining Messaging, Realtime Interaction and Publishing into the work environment of the future A paper the architecture and design of the WebDeskGodkänd; 1996; 20070404 (heering)</p