Mirko Naumann

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For location-based services (LBS), security of location information (i.e. who has control) and user location privacy is a major concern. In this paper we investigate the risks associated with user's privacy- and location information-control, showing a peer-to-peer-based system framework as a possible approach. The focus is on peer-to-peer LBS relying on the(More)
Current Location Based Services (LBS) in GSM/UMTS Networks rely on centralized Location Enabling Servers [8] for location information provisioning via the Gateway Mobile Location Center (GMLC) Le interface. In this Paper, we present a framework for providing Peer-to-Peer Location-Based Services using de-centralized location information management. The(More)
MBMS (Multimedia Broadcast/Multicast Service) is a unidirectional point-to-multipoint (p-t-m) service which allows to transmit data from a single source entity to a group of mobile users in a certain coverage region. In order to investigate the performance of this IP datacast (IPDC) type of services over packet-switched cellular networks like UMTS or GPRS,(More)
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