Airbus Defence and Space Sas

Alcatel Lucent

Astrium Sas

Claude Poletti

Marc Cartigny

Olivier Klotz

Jean Farineau

Christelle Aime

Eric Souleres

Hervé Fritsch

In order to route a data packet in a communication network, a network element implements a traditional routing process including taking a routing decision as a function of the destination of the data packet according to route learning in the communication network. The routing element reviews the routing decision taken by the traditional routing process via an internetwork policy-based routing function selected from among a plurality of candidate internetwork policy-based routing functions, each candidate internetwork policy-based routing function being assigned to an egress interface of the network element and vice versa. The selected internetwork policy-based routing function is that which is assigned to the egress interface selected by the traditional routing process for routing the data packet in the communication network.

Network equipment with inter-network policy-based routing function

Detection of the congestion on a link based on an exchange of messages between a sender and a receiver, one sender and several receivers or several senders and one receiver. This equipment is connected to the ends of a transmission channel. One of the items of equipment is designated as the master and the others slaves. These exchanges are aimed at enabling the master to calculate and compare the rate of the data send and the rate of the data received. A divergence in the rates calculated reveals a congestion on the link. All these exchanges are made in the application layer and therefore do not involve the underlying layers.

Method and device for detecting congestion on a transmission link

In order to detect congestion on a transmission link, endpoint items of network equipment are associated with congestion-detection applications. Per class of service, one application sends to the other control messages indicating volumes of data transmitted by the concerned item of network equipment via the transmission link. On reception of the control messages, the other application obtains information on volumes of data received by the other item of network equipment. By determining a first divergence in volumes of data transmitted between two control messages and a second divergence in volumes of data received, between two control messages, this other application is able to detect a situation of congestion on the transmission link occurring for one or more classes of service, and to generate an alarm signal accordingly.

Method for managing congestion of a transmission link in a packet communication network

A method for managing the service policy applied to a black network comprising a radio link and to a red network connected to this black network managed by a predetermined set of profiles is proposed. The congestion of the radio link is detected by any means by the black domain. The congestion of the radio link is detected by a method for detecting congestion which operates by means of exchanges within the red domain. A service policy profile then established matches for each domain to a detected congestion level.

Method for managing service policy in a telecommunications network

A service admission control method in a communication network comprising at least one group of at least one node per group, the method comprising the steps: Receive a service establishment attempt from one group; and admit the service in the network depending on the granularity of the network topology, the link topology and/or the partitioning of the link topology.

Service admission path control (SAPC)

A point-to-multipoint or multipoint-to-multipoint communication network comprises at least one management center and remote traffic stations, between which radio links sharing resources allocated dynamically by the management center have been established. Each traffic station is tasked, whenever it needs additional resources to increase the useful traffic (UT) that it must transmit to the management center, with adding to the current useful traffic (UT) a first traffic (ST), known as smoothing traffic and representative of a selected margin, and a second traffic (AT), known as anticipated traffic and representative of an anticipated need for additional resources, in order to implicitly solicit the management center, then with determining whether additional resources were allocated by the management center, and, if additional resources were allocated, to increase the useful traffic (UT) by an amount corresponding as much as possible to the sum of the resources corresponding to the first traffic (ST) and allocated additional resources.

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Fontenay aux Roses, France

Claude Poletti