Siemens Aktiengesellschaft

Ntt Docomo, Inc.

Nokia Siemens Networks Gmbh & Co Kg

Christian Prehofer

Karl Klaghofer

Peter Hierholzer

Harald Müller

Viktor Ransmayr

Joachim Charzinski

Philipp Hofmann

Harald Mueller

Rudolf Bitzinger

Holger Karl

Josef Glasmann

Thomas Engel

Rainer Sauerwein

Emma Carlson

An access control function (ZF) which checks a requested use (NU) of a service (DI) by considering an available capacity Cwhich is detected by considering the entire transmission capacity (G) and is available to an access node (ZK) for transmitting traffic flows (VS) to the communications network. The service is carried out in at least one communications network (KN) that is provided with an entire transmission capacity (G). The access node (ZK) is allocated to the access control function (ZF) which checks the requested use (NU) of the service (DI).

System and method for checking the permissibility of a use of a service

In communication system (SYS) including a first network (IN) with at least a first terminal node (CN), and an ad hoc network (AHN) with at least a second terminal node (RN-RN; MN), and a gateway (GW), transmission information (TI) is forwarded between the first terminal node (CN) of the first network (IN) and the second terminal node (RN-RN; MN) of the ad hoc network (AHN). In order to perform a more accurate flow control of transmission information (TI) inside the mobile ad hoc network (AHN), the gateway (GW) and the second terminal node (MN) exchange transmission information (TI) as well as acknowledgement information (ACTAN, ACTAN', ACTAN&#x2033;). Preferably, the exchange of the transmission information (TI) and the acknowledgement information (ACTAN, ACTAN&#x2032;, ACTAN&#x2033;) is carried out through a tunnel link (TUN) established between the gateway (GW) and the second terminal node (MN).

Accurate control of transmission information ad hoc networks

According to the invention, in order to control the access of traffic streams (VS) to the communications network (KN), an available capacity (VK), placed at the disposal of an access node (ZK) for transferring traffic streams (VS) to said communications network (KN), is determined from an access node (ZK) of the communications network (KN), taking into account the total transfer capacity (G) of the communications network (KN). The available capacity (VS) is notably redetermined whenever the routing information (RI) of the access node (ZK) is modified. An access control of this type guarantees the quality of service required in a connectionless communications network.

Method and device for controlling access to a communications network

A method for performing a handover in a mesh network for a plurality of nodes (A, A', B) of said mesh network from a first access point (AP) to a second access point (AP), whereas said plurality of nodes (A, A&#x2032;, B) forms a tree of nodes, said tree comprising a root node (B) and one or more further nodes (A,A&#x2032;) connected to said root node either directly or via intermediate nodes, and said handover being performed for said tree of nodes in a coordinated fashion, said method comprising:

Apparatus and method for improved handover in mesh networks

A wireless network with distributed medium access control allows establishing of a virtual channel between a source node and a destination node via at least one intermediate node. The virtual channel may be established for the entire duration of a communication between the source node and the destination node, and, to establish the virtual channel, a request handler can transmit a virtual channel request, requesting an allocation of transmission resources for the virtual channel. Based on the virtual channel request, a virtual channel confirmation can be generated by the destination node and can be returned to the source node, indicating an allocation of the resources for the virtual channel. A communication handler can then transmit data from the source node to the destination node using the available transmission resources.

Resource reservation in a wireless network with distributed medium access control

Transmission resources of one or more individual transmission links, especially of individual transmission bottlenecks, are managed by a resource manager. In the course of a setting up of a connection, the resource manager determines, by using an item of connection information, the origin and destination of the connection to be set up, and identifies whether this connection is routed over a particular transmission link. Based on the result of the determination, a message is subsequently generated and transmitted to the origin of the connection. A selection of transmission resources to be used for the connection is then carried out based on the transmitted message.

Method for setting up connections with guaranteed quality of service for a communications network having a resource manager

To achieve optimal selection of new access points for mobile devices () being located in a mobile communication environment (), according to the present invention there is provided a method of assisting handovers for a mobile device in a mobile communication environment. It is proposed to proactively deploy a handover decision mechanism in relation to a handover and in view of the operational context of the mobile device (). This proactively deployed handover decision mechanism is then used to determine a new access point for the mobile device ().

Proactive deployment of decision mechanisms for optimal handover

A method establishes a connection between a source network with a source network resource manager and a target network with a target network resource manager. According to the method, a connection control unit of the source network transmits a connection establishment signal to a connection control unit of the target network and&#x2014;parallel to this&#x2014;a reservation request to the target network resource manager. The target network resource reserves the requested resources and forwards the reservation request towards the target network resource manager, which also reserves the requested resources and transmits reservation information regarding the success of the resource reservations to the connection control unit of the target network.

Method for establishing a connection with a predetermined service quality between communications networks with resource managers

Transmission resources are controlled in individual transmission paths in a packet-oriented communication network, whereby data-packet address information which identifies the origin and the goal of the data packets, is transmitted to a resource manager, responsible for a transmission path, from a network transmission device. On a resource request, for a connection to be subsequently generated, the origin and goal thereof are compared with the origin and goal of the previously transmitted data packets by the resource manager. Should there be agreement, the resource manager can deduce that the connection to be established can equally run over the corresponding transmission path. Correspondingly, establishment of further connections occurs, depending upon the available resources of the transmission path.

Method for establishment of connections of pre-determined performance for a packet-oriented communication network with a resource manager

Data packets of a packet-switching network for which transmission of a requested quality is to be assured, are routed via an alternate network. In a source node, such data packets are respectively identified by a bit pattern known to an access node, which is connected to the source node, either directly or indirectly, via at least one intermediate node. The bit pattern is recognized upon arrival in the access node, and as a result of identifying the data packets with the known bit pattern, the data packets are re-routed onto the alternate network.

Method for re-routing data packets onto an alternative network

A user profile is set for a technical system controlled by an electronic device by transmitting user profile data representing the user profile from a mobile telephone terminal to the electronic device via a wireless transmission link.

Method for configuring technical systems via mobile telephone terminals

Quality of service is assured for connections routed via a plurality of subregions of a packet-oriented network via connection paths having prescribed transmission system resources by a resource manager in the packet-oriented network which has access to associated information relating to address ranges of the subregions, routes from source subregions to destination subregions through other subregions, and prescribed transmission system resources between the subregions. When a connection is initialized, a requested scope of resources and source and destination addresses are signaled to the resource manager, and a route through the network is ascertained. Then, taking into account the requested scope of resources and the scope of resources between the subregions of the route, a check is carried out to determine whether the initialized connection is authorized. In addition, the transmission system resources may be reserved for the initialized connection in the subregions included in the ascertained route. The resource manager can be arranged centrally in the network in one of the subregions, and the connection controllers, e.g., the gatekeeper in H.323 networks, provided in the subregions involve the resource manager in the signaling that occurs when a connection is initialized.

Method for assuring the quality of service of connections between subregions of a packet-oriented network having a resource manager

A method is described in which each subregion of a packet-oriented network has an associated item of subregion information, and, when a connection is initialized, the item of subregion information associated with an originating subregion and the destination subregion and also a requested resource are signaled. A connection that is to be initialized from one subregion to another subregion is authorized taking into account the requested resources and the available transmission system resources between the subregions.

Method for switching connections between at least two subregions of a packet-oriented network

In a packet-switching network, a stable quality grade is achieved for data services by virtue of the fact that, during the transmission of data packets which are associated with a data service and are assigned to a quality class for the purposes of possible preferential treatment, the transmitter, generally a computer of a service provider, and/or at least one intermediate node establishes the quality of the transmission on the basis of acknowledgements indicating the quality grade and compares it with the quality grade demanded by the data service, and, on the basis of the result of the comparison, the data packets associated with the data service are possibly assigned to another quality class, of which the quality grade demanded by the data service is expected.

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Munich, Germany

Christian Prehofer