Telefonaktiebolaget Lm Ericsson (publ)

Daniele Ceccarelli

Fabio Cavaliere

Giulio Bottari

Roberto Magri

Vincent Huang

Diego Caviglia

Gianmarco Bruno

Raoul Fiorone

Francesco Fondelli

Paolo Debenedetti

Jeroen Nijhof

Francesco Lazzeri

Paolo Rebella

Tobias Ley

Manuela Scarella

Enrico Dutti

Chirag Parekh

Giovanni Fiaschi

Gianluca Lombardi

Marco Marchesini

Carlo Giovanni Perocchio

Massimiliano Maggiari

Mukunda Nemade

Srinivasa Prasad

Francesco Davide Calabrese

Qing Wan

Methods and apparatus are provided for routing Flex Ethernet (FlexE) data in a network. In an example aspect, a method comprises receiving data on a first FlexE physical layer (PHY) group, determining, from first FlexE overhead on the first FlexE PHY group, that data in one or more time slots on the first FlexE PHY group is associated with a predetermined path in the network, determining a second FlexE PHY group for the data in the one or more time slots based on at least a portion of the predetermined path in the network, and sending the data on the second FlexE PHY group.

Routing flexe data in a network

Examples relate to a method of segment routing in a network node () of a network comprising a plurality of network nodes (). The method comprises receiving a segment routed packet () comprising a payload and having a segment route, and obtaining a target delivery time () from the received segment routed packet. The method further comprises determining () a time of arrival of the packet at a destination of the packet, and determining () if the time of arrival of the packet at the destination is prior to the target delivery time. For a determination that the time of arrival of the packet at the destination is prior to the target delivery time, transmitting () a packet comprising the payload towards the destination.

Segment routing network

A method () of end-to-end path computation across a plurality of domains () in a communication network comprises receiving () a request for a path across the plurality of domains. The method comprises computing () in a network control entity () the end-to-end path across the plurality of domains as part of a hierarchical path computation. Computing the end-to-end path comprises determining if a stored path corresponding to at least a part of the end-to-end path matches one or more criteria of the end-to-end path, and if so, using the stored path for the end-to-end path computation. The method further comprises transmitting () information indicating at least part of the stored path to a domain control entity () configured to control a said one of the plurality of domains involved in the end-to-end path.

Determining a path in a communication network

One aspect of the disclosure provides a method for allocating traffic in a telecommunications network. The telecommunications network comprises a plurality of nodes, with pairs of nodes being connected by respective links. A plurality of demands for connectivity between respective first nodes and respective second nodes are allocated to the telecommunications network, with traffic for each demand being directed via a respective plurality of paths between the respective first and second nodes in accordance with respective weights assigned to each path. The method comprises: determining a criticality of each link forming a path of the plurality of paths for a demand of the plurality of demands, the criticality of a link varying as a function of a utilization of that link at a non-constant gradient between a minimum value at a first value of the utilization and a maximum value at a second value of the utilization, wherein the second value corresponds to a utilization which is over a capacity of the link: determining a criticality of the path as a function of the criticality of the links forming the path: and determining the weight for allocation of traffic to the path as a function of the criticality of the path.

Methods, apparatus and computer programs for allocating traffic in a telecommunications network

Growing community of inventors

Sollentuna, Sweden

Daniele Ceccarelli