Siemens Aktiengesellschaft

Nokia Siemens Networks Gmbh & Co Kg

Nokia Solutions and Networks Gmbh & Co. Kg

Infosim Networking Solutions Ag

Michael Menth

Phuoc Tran-Gia

Jens Milbrandt

Andreas Reifert

Phouc Tran-Gia

Stefan Kopf

The invention is related to a method for resilient multi-path connections between edge devices of a communication network. First are determined connection-specific traffic distribution functions for the multi-paths depending on a plausible failure pattern of active and inactive paths of the multi-path of this connection. Further is selected the traffic distribution function for a multi-path depending on the current failure pattern of active and an inactive paths of the multi-path of this connection and is distributed the traffic of the connection onto the path of the corresponding multi-path pursuant to the selected traffic distribution function. An essential advantage of the invention is a significant decrease of network capacity for resilient multi-path connections. Another advantage of the invention is the short reaction time in case of an outage of one or more paths of the multi-path connections.

Simple and resource-efficient resilient network systems

The invention relates to a method for determining limits for the access control of traffic that is to be transmitted via a communication network. The limits are fixed in such a way that no overload situation can occur in the network; the probability of rejection of traffic flows is, wherever possible, is independent from the point of entry into said network; and resources are used as efficiently as possible. On the basis of limits wherein no overload situation occurs, the limits for the traffic control are raised in such a way that the blocking probability for traffic transmitted between pairs of marginal modes is lowered at the same time. The lowereing of said blocking probability is maintained if an overload situation were to occur in the network. For pairs of marginal nodes contributing to the occurrence of an overload situation, the limits for traffic transmitted between the marginal nodes are fixed at a value prior to or during the overload situation, the limits for traffic transmitted between the marginal nodes are fixed at a value prior to or during the overload situation. The method can be continued for the other pairs until all limits have been set. The method results in efficient transmission of energy while maintaining quality of service parameters.

Method for determining limits for controlling traffic in communication networks with access control

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Oellingen, Germany

Michael Menth