Nec Europe Ltd.

Nec Corporation

Marcus Brunner

Dirk Kutscher

Giorgio Nunzi

Faisal-Ghias Mir

Saverio Niccolini

Sandra Tartarelli

Roman Schlegel

Roberto Bifulco

Hans-Joerg Kolbe

Konstantinos Samdanis

Stefan Schmid

Peer Hasselmeyer

Thomas Dietz

Rolf Winter

Dominique Dudkowski

Henrik Lundqvist

Juergen Quittek

Faisal Ghias Mir

Clarissa Marquezan

Eskindir Asmare

Chiara Mingardi

Michael Stier

Boris Loew

Giogio Nunzi

A method for detecting interactions on a forwarding element in a network, the element adapted to forward data according to rules, a rule set installed on the element, and including a match set and corresponding action set, the match set including at least one match field and the action set including one or more actions wherein action to be performed when matching a match set includes determining one or more relations between match sets based on match field relations, determining one or more relations between action sets, determining one or more interactions between rules based on determined relations between match sets and action sets, each rule being tested against another rule for determining the interaction, and reducing the rule set to an actual rule set according to determined interactions so that the actual rule set includes only rules with no interactions among them.

Method and system for determining network-wide interactions between forwarding elements in a network

A method for identifying at least one electrically powered device by a power supply device via a powerline connection, includes: a) connecting the at least one electrically powered device via a powerline to core power supply; b) sensing that a powerline connection is available by the at least one electrically powered device; c) generating a specific load by modulation of the power according to a unique identifier of the at least one electrically powered device on the powerline connection; d) sensing the generated specific load by the power supply device connected to the powerline connection; and e) extracting the unique identifier information from the specific load by the power supply device. An electrically powered device, a power supply device, a power distribution unit, and a corresponding system are also described.

Method and system for identifying at least one electrically powered device by a power supply device via a powerline connection

A method of operating a packet dropper in a congestion exposure-enabled network, wherein sending hosts and receiving hosts communicate with each other by sending flows of packets over network paths via intermediate routers, which, upon detecting congestion, mark packets of the flows as congestion packets, wherein congestion is indicated to the sending hosts by way of a congestion feedback mechanism, and wherein the sending hosts, upon receiving congestion indications, declare a subset of the packets they send as congestion response packets, thereby producing either conformant flows or non-conformant flows, depending on whether the amount of congestion response packets is balanced with the indicated congestion level or not, is characterized in that the packet dropper carries out in succession a series of traffic analyzing steps for identifying the non-conformant flows. Furthermore, a corresponding packet dropper for use in a congestion exposure-enabled network is described.

Framework of an efficient congestion exposure audit function

A method of policing network traffic based on congestion on a flow-based programmable switch, such as an OpenFlow switch is provided. The method polices congestion-causing flows in a network by detecting congestion at a flow-based programmable switch on the network. Once congestion has been detected, the method identifies one or more flows that are causing the congestion at the flow-based programmable switch, and penalizes the flows that were identified as causing congestion. A flow-based programmable switch including a data plane having input ports, output ports, and forwarding rules that map packets received on an input port to an output port based on a packet matching a rule in the forwarding rules is also described.

User traffic accountability under congestion in flow-based multi-layer switches

A method for optimizing network performances, wherein the network includes one or more network nodes (), performance parameters of the network nodes () being controlled by element of dedicated optimization modules (), wherein each optimization module () monitors at least one performance parameter of the network node () to which the optimization module () is associated and generates a change request for the current value of the performance parameter on the basis of preset rules, is characterized in that the change requests generated by different optimization modules () of the network node () are forwarded to a shared controlling element (), wherein the shared controlling element () enforces a coordination of the received change requests on the basis of a configurable algorithm. Furthermore, a corresponding system is disclosed.

Method and system for optimizing network performances

A method for supporting congestion management in a congestion exposure-enabled network, wherein sending hosts and receiving hosts communicate with each other by sending flows of packets over network paths via intermediate routers, which, upon detecting congestion, mark packets of the flows as congestion packets by including congestion information, wherein congestion is indicated to the sending hosts via a congestion feedback mechanism, and wherein the sending hosts, upon receiving congestion indications, declare a subset of the packets they send as congestion response packets by including congestion information, depending on whether the amount of congestion response packets is balanced with the indicated congestion level or not is characterized in that aggregated congestion is determined on the basis of congestion information included in packets that are sent over the network paths between the sending hosts and the receiving hosts. Furthermore, a corresponding congestion exposure-enabled network system and a corresponding intermediate router are disclosed.

Method for supporting congestion management in a congestion exposure-enabled network

For allowing a particularly economic operation of a network with a high degree of energy conservation a method for operating a wireless radio network, especially a radio access network, is claimed, wherein the wireless radio network includes a core network, a number of base stations and at least one mobile host for wireless communication via at least one base station, wherein the method is characterized in that an association of powered on and powered off base stations within definable base station partitions will be arranged in a coordinated manner, thereby maintaining a minimum number or the smallest possible number of powered on base stations being necessary for accommodating a current traffic demand. Further, a network is claimed, preferably for carrying out the above mentioned method.

Method for operating a wireless radio network and a network

For allowing a very effective resource management and network utilization a method for resource management within a wireless network, especially EPS (Evolved Packet Core) of LTE (Long Term Evolution) network, is described, wherein a congestion control of data-traffic is performed. The method is characterized in that for congestion control a Re-ECN (Explicit Congestion Notification) function will be used wherein the Re-ECN function includes a policing function and a dropping function. Further, a corresponding wireless network is described, preferably for carrying out the above mentioned method.

Method for resource management within a wireless network and a wireless network

For allowing an efficient consumption of resources of a physical substrate network a method for operating at least one virtual network on a substrate network is claimed, especially within a framework of a self-organizing model for optimizing resource consumption of the substrate network, wherein the virtual networks are including a plurality of virtual nodes each being assigned to respective substrate nodes of the substrate network and wherein two adjacent virtual nodes of the same virtual network are connected by a virtual link which is corresponding to one or more respective substrate node links, including the following steps: Identifying a traffic pattern within at least two substrate nodes with regard to the resources individually consumed by the virtual networks; reallocating of the resources depending on an evaluation of the identified traffic patterns for optimizing resource consumption within the substrate nodes, wherein the identifying step and the evaluation and decision to execute the reallocation of resources is performed locally at each individual substrate node. Further, an according virtual network environment on a substrate network is claimed, preferably for carrying out the above mentioned method.

Method for operating at least one virtual network on a substrate network and a virtual network environment

A method for supporting distribution of warning messages, is characterized in that an NGN (Next Generation Network) infrastructure is employed for distribution, wherein the infrastructure includes a plurality of network elements including endpoints, wherein a hierarchical architecture is defined for the network elements, wherein groups of network elements including endpoints with specific characteristics are defined, wherein each of the network elements provides its group membership information to at least one higher-tier network element, and wherein at least one group warning controller is provided that, upon receiving a request from a source node, generates a warning message for one or more target groups and forwards the warning message to lower-tier network elements of the respective target group or groups towards endpoints.

Method for supporting distribution of warning messages

A method of monitoring a network, in particular a data or telecommunication network, where the network includes a number of units to be monitored, and where relevant states of these units are controlled with respect to functionality, efficiency and/or security by means of provided information elements called managed objects at the monitored units, that reflect states and/or parameters to be monitored, and that are read and/or written by a network management system using network management protocols, is characterized in that at the managed units an additional management object&#x2014;the health check object&#x2014;is being implemented, such that almost all relevant states of the respective monitored unit are aggregated into a single value, that can be read by the network management system.

Network monitoring method and system

A method for protecting SIP (Session Initiation Protocol)-based applications wherein SIP messages are analyzed and malicious SIP messages that potentially constitute a security risk for the SIP-based application are identified is discloses. Regarding a realization of a particularly high security [level] with means that are easy to implement&#x2014;a pre-definable number N of pre-configurable parameters&#x2014;identities&#x2014;is extracted from the SIP messages and that for each SIP message a comparison of the identities with the identities extracted from previous SIP message is performed, on the base of which a maliciousness level ML is assessed for every SIP message.

Method for protecting SIP-based applications

A method for identifying undesired telephone calls (Spit/Spam over IP), preferably in a VoIP network, in which the telephone calls coming in for a telephone subscriber, the callee, from at least one calling telephone subscriber, the caller, are subjected to a test or more precisely to a statistical analysis. The method is developed in such a manner that in the framework of the test for incoming calls, the time of the receipt of each call is determined and in each case the probability that the call is undesired is determined, where for the calculation of the probability the time of the receipt of the call, or a parameter dependent thereon, is related to the temporal distribution of previous undesired calls.

Method for identifying undesired telephone calls

Method for searching services, resources and/or functionalities in a network wherein the network comprises a multitude of nodes to which routable network addresses are assigned, and wherein the services, resources and/or functionalities which are to be searched, are specified by a source node (Q) that is characterized in that a corresponding direction is specified within the network by at least one destination node (Z) and/or nodes near to the destination node (Z), by which a routing path is defined between the source node (Q) and the corresponding destination node (Z), and characterized in that only pre-configurable nodes near to the routing path between source node (Q) and destination node (Z) are included in the search.

Growing community of inventors

Leimen, Germany

Marcus Brunner