Ralf Keller - Academia.edu (original) (raw)

Papers by Ralf Keller

A method for service management point to multiple points on a mobile communication network, the m... more A method for service management point to multiple points on a mobile communication network, the method comprising: - receiving (S10) a mobile station a request for access to a service point to multiple points, which request comprises identification the subscriber making the request, and identification of the service point to multiple points for which access is requested; - storing (S11) the identification of the subscriber making the request in association with the identification service point to multiple points for which access is requested; - executing (S12) a method of enabling access; and - providing (S13) accounting information to an accounting entity (36, 87) of said mobile communication network in which accounting service point to multiple points is performed on the basis of the number of subscribers which effect access request to said service, and said service provider point to multiple points, the accounting information identifies the subscriber making the request and the s...

L'invention concerne un systeme de communication a acces multiple comprenant un systeme de tr... more L'invention concerne un systeme de communication a acces multiple comprenant un systeme de traitement ainsi qu'un noeud d'acces, lequel interface plusieurs equipements mobiles clients, un noeud logique produisant une specification de qualite de service (QOS) destinee a l'equipement mobile (MT) client. Un gestionnaire de ressources, gerant le service de specification de la qualite QOS, distribue au moins une contrainte de qualite QOS associees a ladite specification et/ou determine si les ressources peuvent etre allouees, afin de satisfaire a ladite specification de qualite QOS. En outre, le noeud logique produit une information de reservation et le systeme de communication comprend au moins deux zones de qualite QOS pouvant communiquer l'une avec l'autre, de meme qu'au moins une rupture de qualite QOS entre deux telles zones.

InLemet Abstract Differentiated Services (OS) is currently the major ap- proach discussed to prov... more InLemet Abstract Differentiated Services (OS) is currently the major ap- proach discussed to provide network layer service differ- enriation in ZP networks. However, the discussion mainly addresses Ned networks. This short paper analyzes the usage of DS in cellular wireless packet networks being based on the 'Universal Mobile Telecommunications Sys- tem' (UMTS), focusing on service provisioning within the transport IP network of UMTS.

A data network packet radio, comprising at least a gateway node (GGSN), at least one serving node... more A data network packet radio, comprising at least a gateway node (GGSN), at least one serving node (SGSN) connected to the gateway node, a plurality of nodes of radio access (RAN), connected the serving node (SGSN), such that the radio network packet transports data packets from an external network packet data, comprising a internet service provider (ISP), to mobile stations (MS) hooked wirelessly nodes radio access (RAN), such that the gateway node comprises a functional routability for transmission tunnel current IP data to a mobile station, through the coupling point given mobile station to an access node via radio (RAN), such that the serving node is involved in activation procedures PDP context that enable a given mobile station to perform a communication packet switched with l to external data network packets, and enable loading of such communication, characterized in that at least the gateway node, subsequent to activation of the context of multiple points or multi-point PDP, establishes at least a first tunnel multicasting (GTPT1 - GTPT4, GTPT10 - GTPT35) between the gateway node and at least one serving node so that the multicast tunnel carrying data streams IP belongs to at least two mobile stations belonging to a group common multicast, the serving node comprising functions of mobility management and security for mobile stations, and that the first multicast tunnel comprises data combined IP belonging to a plurality of multicast groups currents .