Siemens Aktiengesellschaft

Nokia Solutions and Networks Gmbh & Co. Kg

Siemens Schweiz Ag

Vivek Kulkarni

Elie Sfeir

Matthias Scheffel

Martin Nathansen

Jijun Luo

Johannes Riedl

Andreas Zirkler

Wolfgang Kellerer

Joachim Lohmeyer

Florian Zeiger

Kolja Eger

Vishal Harshvardhan Sankhla

Flemming Bay Thunbo

Ermin Sakic

Janus Ahrensbach

Ulrich Vestergaard B Hansen

Amaury Van Bemten

Jochen Guck

Jannik Hoejgaard

Jörg Hammer

Jonathan Miles Copley

Various embodiments include an apparatus for operating a software-defined network having a number of network elements comprising: a memory unit storing an image of the software-defined network; a control unit programmed to use the stored image as a basis for controlling forwarding of data streams by the number of network elements; and a comparison unit programmed to compare the stored image against a network image published in a ledger of a blockchain.

Apparatus, system and method for operating a software-defined network

Some embodiments include a device for managing end-to-end connections of a network including a plurality of end-to-end connections with assigned queues including a data flow having data packets to be transmitted collectively comprising: a processor; a state unit to provide a current status of a quality of service parameter of a queue to which a new data flow is to be allocated; a resource allocation unit to allocate the new data flow to the queue based on a threshold for the quality of service parameter for the queue and the current status of the quality of service parameter of the queue; and a routing unit to route the data packets of the new data flow based on the allocation.

Device and method for managing end-to-end connections

Computer system and method for dynamically adapting a software-defined network A computer system for dynamically adapting a software-defined network is suggested. The computer system comprises a plurality of virtual domains, each virtual domain comprising a network controller to which a back-up network controller is assigned, wherein the network controller is adapted to manage a plurality of switches being assigned to the virtual domain, wherein the software-defined network is partitioned into the plurality of virtual domains, and a root controller, wherein the root controller is adapted to manage the software-defined network by dynamically adding and/or removing virtual domains based on a threshold of the software-defined network, wherein a back-up root controller is assigned to the root controller. Further, a method for dynamically adapting a software-defined network is suggested. The suggested computer system provides the advantage of a dynamical adaptation of the software-defined network and at the same time, due to the back-up controllers, an improved fault-tolerance.

Computer system and method for dynamically adapting a software-defined network

A network device which is connectable to a data communication network is provided. The network device includes at least two device components including a first device component. Each device component has a communication interface, which is accessible via an internal static network address, associated for communicating data. The network device further includes a node device having an internal interface for communication with the communication interface of each of the at least two device components and an external interface for communication with an external device different from the network device. The node device is configured for receiving external data from the data communication network and providing to the first device component, in response the external data and by using the internal network address of the first device component, component specific data related to the first device component.

Auto-configuration of network devices

A network node for a communication network comprising a first subnetwork and a second subnetwork connected to the first subnetwork, wherein the first subnetwork uses a spanning tree protocol and the second subnetwork uses a second protocol differing from the protocol of the first subnetwork, and the network node is configured as an element for the second subnetwork and is configured for communication within the second subnetwork. In addition, the network node configured by a spanning tree functionality as a spanning tree master node for checking and controlling the second subnetwork in such a way that the second subnetwork is handled or is able to be handled by the spanning tree protocol of the first subnetwork as a virtual network node.

Network node for a communication network having a first subnetwork using a spanning tree protocol and a second subnetwork connected to the first subnetwork

Authorization data is sent to radio stations so that the radio stations are temporarily authorized, by way of the authorization data, to communicate using radio access technology. Messages can be transmitted between a first radio station and a second radio station via a path that runs via one or more additional radio stations. The authorization data is sent such that, while a message is transmitted via the path using radio access technology, at any point in time a subset of adjacent radio stations on the path are authorized to communicate using radio access technology.

Method of operating radio communications systems using SDR (software defined radio) radio stations

In a method for transferring data packets in a communication network, first data packets having a low priority are transferred between a transmitter and a receiver and second data packets having a high priority compared to the first data packets are preferably transferred between them. In a second data packet to be transferred it is checked whether presently a first data packet is being transferred. If yes, the transfer of the first data packet is interrupted or stopped and the second data packet is then transferred. After the transfer of the second data packet, the transfer of the un-transferred first data packet is repeated or the rest of the incompletely transferred first data packet is transferred. Each first data packet is stored in an intermediate memory in parallel with a transmission and is only deleted from the intermediate memory after complete transfer of the first data packet to the receiver.

Method for transferring data packets in a communication network and switching device

A method for reconfiguring a communication network is provided. A first network uses a first network protocol and a second network uses a second network protocol, the two networks being connected by two data links. A first data link is initialized as activated and a second data link is initialized as deactivated. A failure of the first data link is detected by a first bridge of the second network, the first bridge being connected to the first data link. A first data packet is generated by the first bridge and is transmitted to a second bridge of the second network, the second bridge being connected to the second data link. The first data packet is received and processed by the second bridge. The first data packet contains information which initiates a partial implementation of the first network protocol on a port of the second bridge and an activation of the second data link.

Method for the reconfiguration of a communications network

A method of reconfiguring a communications network is provided. A first network using a first network protocol and a second network using a second network protocol are connected by a master data link initialized as activated and two slave data links initialized as inactivated. A failure of the master data link or a slave data link is detected by a master bridge of the second network, the master bridge being connected to the master data link. A first data packet is generated by the master bridge and is transmitted to a slave bridge of the second network, the slave bridge being connected to a slave data link. The slave bridge is selected by the master bridge according to a selection rule. The first data packet contains information which initiates a partial execution of the first network protocol on a port of the slave bridge and an activation of the slave data link by the first network protocol.

Method for reconfiguring a communications network

The invention relates to a communication system comprising at least one first communication network designed for communication according to a first protocol, at least one second communication network designed for communication according to a second protocol, and at least one third communication network designed for communication according to the first and second protocols. The at least one first communication network and/or the at least one second communication network and/or the at least one third communication network are coupled together for the exchange of messages. The inventive system also comprises a mobile computer designed for communication according to the first and second protocols, and a target computer which is designed for communication according to the first protocol and/or the second protocol, and is associated with the first, second or third communication network. The inventive communication system is designed in such away that when the mobile computer is connected to a network connection computer of the third communication network, before the establishment of a communication connection to the target computer, the protocol to be used for communication with the network connection computer is determined.

Communication system, computer, and method for determining a communication protocol to be used in a communication system

A method for reconfiguring a packet-switched communication network using a network protocol for installing a logic topology of the network formed as a spanning tree is disclosed. The method includes detecting failure of a direct link to a root bridge of the spanning tree by a first bridge; detecting the failure of a direct link to the root bridge by a second bridge; transmitting a first configuration frame generated by the first bridge to other bridges; receiving the first configuration frame by a third bridge and transmitting a second configuration frame, generated by the third bridge, to the other bridges; detecting the first or second configuration frame by the second bridge and transmitting the third configuration frame generated by the second bridge to the other bridges; receiving the third configuration frame by the other bridges of the network and triggering a reconfiguration of the network with detection of a new spanning tree by the network protocol.

Growing community of inventors

Unterhaching, Germany

Vivek Kulkarni