Abstract: Embodiments herein relate to a network node (13) for handling an application of an application server (15) in a communication network, wherein the network node is configured to configure the application with an edge connectivity service for a user equipment (10).

Abstract: Embodiments herein provide e.g. a method performed by a network node (13) for providing an application to a user equipment, UE, (10) in a communication network. The network node (13) obtains location information indicating a location of the UE (10); and determines an anchor point for the UE (10) based on the obtained location information and a configuration of an edge connectivity service associated with the application.

Abstract: A method for dynamic access network selection by a user equipment based on application orchestration information in an edge cloud system. The method includes determining, by a network discovery function, application orchestration information describing placement of instances of one or more applications in the edge cloud system; generating, by the network discovery function, one or more access network policies for the user equipment based on the application orchestration information; and transmitting, by the network discovery function, the one or more access network policies to the user equipment such that, based on the one or more access network policies, the user equipment is to select one or more of an access network from a plurality of access networks available to the user equipment for the user equipment to connect to and which access network from the plurality of access networks to route particular data flows.

Abstract: Methods and apparatus are disclosed, including in one example a method for scheduling resources, associated with a plurality of components of a communication network, for providing a network service to a user equipment (UE). The method comprises receiving a service request for providing the network service, wherein the service request includes one or more service constraints. The method also comprises, for each of the plurality of network components, determining component resources that are needed to fulfill the service request according to the service constraints, sending, to a manager function associated with the particular component, a resource request that includes identification of the determined component resources and information related to the service constraints, and receiving, from the manager function, service information associated with the particular component.

Abstract: A network architecture for an optical communication network, an optical communication network configured according to the network architecture and a method for interconnecting via a MD-WSS are provided. The network comprises at least a first ODN, an MD-WSS having a plurality of ports, and at least a first node. The first ODN is connected to one of the ports of the MD-WSS and the first node is connected to another one of the ports of the MD-WSS, wherein the ports of the MD-WSS 100 are paired such that the port connected to the first ODN is paired with the port connected to the first node such that signals originating from the first ODN are in a default case routed to the first node, and signals originating from the first node are in the default case routed to the first ODN.

Abstract: A method in an optical Wavelength Selective Switch, WSS, for multidirectional switching of optical signals. The optical WSS comprises a reflective element, a first tributary port and a second tributary port. The optical WSS switches (304) an optical signal between the first tributary port and the second tributary port with the reflective element.

Abstract: A network architecture for an optical communication network, an optical communication network configured according to the network architecture and a method for interconnecting via a MD-WSS are provided. The network comprises at least a first ODN, an MD-WSS having a plurality of ports, and at least a first node. The first ODN is connected to one of the ports of the MD-WSS and the first node is connected to another one of the ports of the MD-WSS, wherein the ports of the MD-WSS 100 are paired such that the port connected to the first ODN is paired with the port connected to the first node such that signals originating from the first ODN are in a default case routed to the first node, and signals originating from the first node are in the default case routed to the first ODN.

Abstract: A datacenter for performing a service is provided. The datacenter is configured for receiving an optical signal comprising groups of wavelength bands, A1, A2, A3, . . . , AX, and B, X being an integer, the signal being associated with a request for a service to be executed by the datacenter, the datacenter being configured for executing the service and outputting the result of the service. The datacenter comprises at least one 1:N MD-WSS, having one common port and N tributary ports, where N is an integer and N>1, and a group of at least one server cluster, each comprising a respective transceiver configured to receive and transmit signals on at least some of the wavelength bands.

Abstract: An optical communications network has an interconnecting node (100) coupled in between at least one hub node (130) and at least first (140) and second (150) access nodes, to provide working and protection optical paths. The interconnecting node has a working wavelength selective switch (110) to select which working wavelengths are coupled. A corresponding protection wavelength selective switch (120) is also provided for the protection wavelengths. In the event of detection of a fault, protection switching (230) is carried out at the access node and the hub node without altering the selections made by the wavelength selective switches in the interconnecting node. Thus protection schemes across the interconnecting node for more than one access node can be handled. By not needing to alter wavelength selections at the interconnecting node during protection switching operation, the complexity and thus costs can be reduced.

Abstract: A method in an optical Wavelength Selective Switch, WSS, for multidirectional switching of optical signals. The optical WSS comprises a reflective element, a first tributary port and a second tributary port. The optical WSS switches (304) an optical signal between the first tributary port and the second tributary port with the reflective element.

Abstract: A datacentre for performing a service is provided. The datacentre is configured for receiving an optical signal comprising groups of wavelength bands, A1, A2, A3, . . . , AX, and B, X being an integer, the signal being associated with a request for a service to be executed by the datacentre, the datacentre being configured for executing the service and outputting the result of the service. The datacentre comprises at least one 1:N MD-WSS, having one common port and N tributary ports, where N is an integer and N>1, and a group of at least one server cluster, each comprising a respective transceiver configured to receive and transmit signals on at least some of the wavelength bands.

Abstract: A method in an optical Wavelength Selective Switch, WSS, for multidirectional switching of optical signals. The optical WSS comprises a reflective element, a first tributary port and a second tributary port. The optical WSS switches (304) an optical signal between the first tributary port and the second tributary port with the reflective element.

Abstract: An optical access network comprises optical network units connected to a node. A monitoring unit determines information indicative of energy consumption at the optical network unit over a period of time. An optical network unit can operate in operating states/modes which differ in their energy consumption. Monitoring unit can determine the information by determining a time that an optical network unit spends in the different operating states/modes. Monitoring unit can use a state machine at the node which represents the optical network unit. An optical network unit can locally record time spent in states/modes and forward this to the monitoring unit. An optical network unit can locally monitor energy consumption and forward this to the monitoring unit. An operational parameters of the access network can be modified based on the information determined by the monitoring unit.

Abstract: A method of dynamic bandwidth allocation comprising updating a limit value (Bmax,i,j) of bandwidth, comprising subtracting from an initial value (Nij) a value (Mijk) indicative of previously assigned bandwidth, and adding a predetermined bandwidth value (Tij).

Abstract: A method in an optical Wavelength Selective Switch, WSS, for multidirectional switching of optical signals. The optical WSS comprises a reflective element, a first tributary port and a second tributary port. The optical WSS switches (304) an optical signal between the first tributary port and the second tributary port with the reflective element.

Abstract: A method for automatic topology discovery implemented in a wavelength division multiplexing (WDM) network is disclosed. The WDM network contains a number of wavelength switching devices, and the method starts with selecting an unassigned wavelength between a pair of wavelength switching devices. For a first port of a first wavelength switching device, a pass through state is configured between the first port and a coupling port of the first wavelength switching device, and a first probing signal is sent at the unassigned wavelength to the first wavelength switching device. The method continues with detecting iteratively the first probing signal at the unassigned wavelength through each of a set of ports of a second wavelength switching device during a time period, and recording a connection between the first port of the first wavelength switching device and a port of the second wavelength switching devices when the first probing signal is detected.

Abstract: A method for automatic topology discovery implemented in a wavelength division multiplexing (WDM) network is disclosed. The WDM network contains a number of wavelength switching devices, and the method starts with selecting an unassigned wavelength between a pair of wavelength switching devices. For a first port of a first wavelength switching device, a pass through state is configured between the first port and a coupling port of the first wavelength switching device, and a first probing signal is sent at the unassigned wavelength to the first wavelength switching device. The method continues with detecting iteratively the first probing signal at the unassigned wavelength through each of a set of ports of a second wavelength switching device during a time period, and recording a connection between the first port of the first wavelength switching device and a port of the second wavelength switching devices when the first probing signal is detected.

Abstract: An optical access network comprises optical network units connected to a node. A monitoring unit determines information indicative of energy consumption at the optical network unit over a period of time. An optical network unit can operate in operating states/modes which differ in their energy consumption. Monitoring unit can determine the information by determining a time that an optical network unit spends in the different operating states/modes. Monitoring unit can use a state machine at the node which represents the optical network unit. An optical network unit can locally record time spent in states/modes and forward this to the monitoring unit. An optical network unit can locally monitor energy consumption and forward this to the monitoring unit. An operational parameters of the access network can be modified based on the information determined by the monitoring unit.

Abstract: An optical access network (5) comprises optical network units (10) connected to a node (40). A monitoring unit (35) determines information indicative of energy consumption at the optical network unit (10) over a period of time. An optical network unit (10) can operate in operating states/modes which differ in their energy consumption. Monitoring unit (35) can determine the information by determining a time that an optical network unit spends in the different operating states/modes. Monitoring unit (35) can use a state machine (31) at the node (40) which represents the optical network unit (10). An optical network unit (10) can locally record time spent in states/modes and forward this to the monitoring unit (35). An optical network unit (10) can locally monitor energy consumption and forward this to the monitoring unit (35). An operational parameters of the access network (5) can be modified based on the information determined by the monitoring unit (35).

Abstract: Power management is performed in an optical access network to reduce energy consumption. Service information is determined about traffic at the first node. Power management is controlled based on the determined service information. The first node can control power management at the first node and/or the second node. The first node can categorize traffic according to service and determine traffic activity per service. Service information can include service type of the traffic, traffic class of the traffic, and/or quality of service requirements of the traffic.