公开(公告)号：WO2018167325A1

公开(公告)日：2018-09-20

申请号：PCT/EP2018/056825

申请日：2018-03-19

Applicant: XIEON NETWORKS S.À R.L.

Inventor： SLOVAK, Juraj ,  SCHAIRER, Wolfgang ,  HERRMANN, Maximilian ,  TORRENGO, Enrico

IPC: H04B10/079

CPC classification number: H04B10/07953

Abstract: A method of determining contributions of different sources of signal degradation for optical signals transmitted over an optical link in an optical transmission system, comprising measuring a performance value (P) of a signal transmission on said optical link, deriving, from the performance value, an auxiliary noise power value (P N ) based on a predetermined relationship between the performance value (P) and the auxiliary noise power value (P N ), wherein the auxiliary noise power value (P N ) comprises contributions of amplified spontaneous emission power (P A ) generated on the optical link and a link-related equivalent noise power contributions (P L ) representing other sources of signal degradation upon transmission on the optical link, measuring or deriving an OSNR-related value (Q) for the signal transmission on the optical link, wherein the OSNR-related value (Q) corresponds to or is at least indicative of an actual OSNR on the optical link, and distinguishing, based on the auxiliary noise power value (P N ) and on the OSNR-related value (Q) between noise power contributions of amplified spontaneous emission and link-related equivalent noise power contributions.

公开(公告)号：WO2018137818A1

公开(公告)日：2018-08-02

申请号：PCT/EP2017/081554

申请日：2017-12-05

Applicant: XIEON NETWORKS S.À R.L.

Inventor： FRANTZ, Michael ,  SLOVAK, Juraj ,  RIEMER, Heiko

IPC: H04J14/02

Abstract: Disclosed is a service provisioning tool and method for determining favorable implementations of a service in a grid-less optical network, wherein said service provisioning tool is configured to assign total cost values to a given implementations, select the implementation or a group of implementations having the lowest cost, wherein said total cost values are based on - cost values regarding selectable data rates on individual links, - cost values regarding necessity to install additional equipment, - cost values regarding selectable signal frequency bands. One or more of said cost values are dynamically changing as a function of one or more of the degree of utilization, the lifetime of the service, the time available for establishing the service, a modulation format and a signal power. The cost value per band width varies, depending on one or more of the size of the selected frequency band, and to what extent the selected frequency band fills gaps between occupied spectral ranges or creates gaps remaining between occupied spectral ranges.