@inproceedings{BrueningZapotoczkyIbachetal.2007, author = {Br{\"u}ning, Stefan and Zapotoczky, Johannes and Ibach, Peter and Stantchev, Vladimir}, title = {Cooperative Positioning with MagicMap}, series = {Workshop on Positioning, Navigation and Communication 2007 (WPNC'07)}, booktitle = {Workshop on Positioning, Navigation and Communication 2007 (WPNC'07)}, url = {http://nbn-resolving.de/urn:nbn:de:0298-opus4-695}, pages = {6}, year = {2007}, abstract = {We present MagicMap, a cooperative, hybrid positioning system developed at the Humboldt-University in Berlin. While most other positioning systems are limited to specific scenarios and technologies our system provides means to incorporate any available wireless networking technology. Currently, MagicMap supports WLAN, RFID, and ZigBee as wireless technologies for positioning and Linux, Windows, and Windows CE as platforms. Position calculation and exchange is based on a cooperative approach allowing an open internet community to share the required data.}, language = {en} } @inproceedings{IbachTammHorbank2005, author = {Ibach, Peter and Tamm, Gerrit and Horbank, Matthias}, title = {Dynamic Value Webs in Mobile Environments Using Adaptive Location-Based Services}, series = {38th Hawaii International Conference on System Sciences (HICSS-38 2005), Hawaii}, booktitle = {38th Hawaii International Conference on System Sciences (HICSS-38 2005), Hawaii}, year = {2005}, abstract = {Web Services appear promising to facilitate interoperability and enable Dynamic Value Webs - the on-demand aggregation of services even across enterprise boundaries. However, past experiences have shown interoperability limitations in practice mainly due to information asymmetries on the Web Services markets. This Paper describes a service-oriented architecture for building Dynamic Value Webs in mobile environments using adaptive Location-Based Services. Our concept addresses the following three predominant difficulties: (1) service adaptivity to changing conditions in mobile environments, (2) interoperability including higher levels of semantics, and (3) assuring trustworthiness to all affected parties.}, language = {en} }