Telia Company AB

Methods and switch devices for switching data frames are described. A method performed by a source switch device may include receiving a data frame from a source host node, wherein the data frame includes a MAC address of the source host node and a destination MAC address; modifying the received data frame by modifying a part of the source MAC address in the received data frame with information comprising: the switch ID, a port number and a reference number; and determining if there is a table in the source switch device. Further, if the received data frame is an ARP request message, the method may include modifying the modified data frame by replacing a sender MAC address with the modified part of the source MAC address and flooding the further modified data frame, to at least one switch device.

One or more methods in a network topology comprising a plurality of routers and a plurality of nodes, where the routers include at least a first router, a second router and at least one transit router, wherein the method(s) permit for at least one, or some or each, of the router(s) (e.g., the transit router(s)) to determine to which entity in the network(s) to forward the data frame based on (e.g., only) the so-called layer-two part of the frame, possibly without the need to read the so-called layer three part of the data frame.

Disclosed is a method for managing an update of a configuration of a terminal device accessible over a mobile communication network, the method, performed by an apparatus having access to data indicative of a behavior of the terminal device and to data indicative of a service of a mobile communication network with respect to the behavior of the terminal device, includes: detecting an instant to update the configuration of the terminal device; and generating, upon the detecting, a control signal to the terminal device to trigger the update of the configuration of the terminal device. Also disclosed is an apparatus, a system and a computer program.

Disclosed is a solution for controlling a routing of data traffic of a roaming ter-minal device with data network, the method includes: detecting if the terminal device is served by a private network, and in accordance with a detection re-sult performing one of: selecting a network node of the private network for managing the routing if the roaming terminal device is served by the private network; or selecting a network node of a mobile communication network for managing the routing if the terminal device is not served by the private net-work, the method further including: generating a control signal to a respective network the selected network node resides for assigning a responsibility for managing the routing.

A method for selecting a communication network for a roaming terminal device is provided, the method comprises: receiving a request for providing information on a number of communication networks; determining at least one communication network serving in a location the terminal device is roaming, the determination of the at least one communication network is based on at least one predefined criteria; generating a response comprising data indicative of the at least one communication network to the terminal device over the signaling plane. Also a server device and a computer program are provided.

A method for preparing a communication session between a first subscriber and a second subscriber at least by selecting a network slice of a mobile communication network to the first subscriber for the communication session is provided, the method comprises: receiving a request to establish the communication session; generating, based on data descriptive of the communication session, a resource request to select the network slice for the first subscriber; and generating, in response to a receipt of data indicative of the network slice, a message to the first subscriber, the message indicating the network slice selected to the first subscriber for the communication session with the second subscriber. Also a server device and a computer program product are provided.

A method for switching data frames performed by a source switch device may include receiving a data frame, including source and destination MAC addresses, and modifying a part of the source MAC address with a switch ID of the source switch device, a port number from which the data frame is received, and a reference number representing the part of the source MAC address. The method may also include including the reference number and the part of the source MAC address in a table in the switch device or generating the table and including an entry with the reference number and the part of the source MAC address in the table. The method may also include forwarding or flooding the modified data frame to at least one switch device of the plurality of switch devices.

Disclosed is a method for a management of a subscriber identity module related data, the data at least defining a mode of the subscriber identity module, the method, performed by an apparatus, including: receiving data indicative of a behavior of a device; detecting a deviation in the behavior of the device provided with the subscriber identity module compared to the mode set for the subscriber identity module; generating, in response to the detection of the deviation, a control signal to reset the mode of the subscriber identity module to correspond to the behavior of the device. Also disclosed is an apparatus, to a communication system, and to a computer program.

A method for triggering a handover of a mobile terminal from a first network to a second network is provided, the method comprises: accessing data descriptive of a behavior of mobile terminals served by the first mobile communication network; detecting a mobile terminal whose behavior is indicative of an expected need of a handover; generating a control signal to a control entity of the first mobile communication network to request triggering of a handover of the mobile terminal to the second mobile communication network. A computing system, a computer program and a communication system are also provided to.

A method for managing a call originating from a roaming terminal device is provided, the method comprises: obtaining a destination address; generating an inquiry to data storage; receiving a response to the inquiry; and generating a control signal to a core network of a visited communication network (VPLMN) the terminal device is roaming, the control signal carrying data causing an instruction to the core network of the visited communication network (VPLMN) to route the call by the visited communication network (VPLMN) serving the roaming terminal device to the destination address. Also a call management function, a communication system and a computer program are disclosed.