Telefonaktiebolaget Lm Ericsson (Publ)

Staffan Bonnier

Hans-Åke Lund

Lars Gunnar Folke Ahlström

Hans Bertil Rönneke

Chandramouli Balasubramanian

Samita Chakrabarti

Brian Russell Kean

Sten Pettersson

Niklas Lundin

Mahmood Hossain

Anders Henriksson

Anders Åhlén

Staffan Winell

Lars Gunnar Folke AHLSTRÖM

Embodiments of the invention include a method for providing UE session resilience performed in a first PDN-GW that is coupled to a second PDN-GW, which are both in a PDN-GW pool. The method provides UE session resilience by allowing the first PDN-GW to provide connectivity for UE sessions previously serviced by the second PDN-GW after the second PDN-GW becomes non-operational. The first PDN-GW recognizes that the second PDN-GW failed and then activates a plurality of standby UE sessions. Each standby UE session is a backup UE session corresponding to a previously active UE session serviced on the second PDN-GW. Each standby UE session is associated with a UE device and a network resource identifier of an APN slice. The first PDN-GW transmits a message to a SGW that is servicing the UE sessions that indicates that the SGW should direct traffic previously bound for the second PDN-GW to the first PDN-GW.

Mobile gateways in pool for session resilience

In exemplary embodiments in the present disclosure a method in a first Network Node for measuring network characteristics using a performance measuring protocol is defined. The method comprises receiving a message, extracting a network address of a second network node from said message, and storing said network address of said second network node. The method further comprises setting up a session for measuring network characteristics using said performance measuring protocol between said first network node and said second network node utilizing said network address.

Dynamic provisioning of TWAMP

Communication sessions are each homed on one of a plurality of line cards in a network element. Packets received by the network element are processed on the home card before being transmitted to a subscriber device, such as a mobile phone or laptop computer. When a packet is received by the network element, it is not necessarily received by the line card that serves as a home card for the respective session. The packet is switched within the network element from the receiving line card, i.e., the trunk card, to the home card. The network element identifies the home card by performing a lookup in a table duplicated on all the line cards using the least significant bits of the IP address in the packet. Using these bits to organize the table limits the size of the table and balances load among the line cards.

Scalable distributed user plane partitioned two-stage forwarding information base lookup for subscriber internet protocol host routes

A method in a server for controlling the distribution of messages from a plurality of clients among a plurality of processing means, including the steps of: establishing whether a message received on an interface board of the server is addressed using a normal identity specific for the client that sent the message and, if yes, then: using a first algorithm to map the normal identity to a load index in a first mapping means; and, mapping the load index to one of the plurality of processing means using a mapping table provided in the interface board. If the message is addressed using an internal identity generated in the server, rather than the normal identity specific for the client that sent the message, then: using a second algorithm to map the internal identity to a load index in a second mapping means; and, mapping the load index to one of the plurality of processing means using the mapping table provided in the interface board.

Arrangement and method relating to load distribution

A pool of functional server nodes in a packet data network, and method of transferring a given mobile terminal from a current functional server node to a target functional server node in the pool. An interface enables each functional server node to control any, or a number of, radio network control nodes. When a transfer is desired, the pool selects the target functional server node and initiates a transfer of control responsibility for the given mobile terminal's connections from the current functional server node to the selected target functional server node. The control responsibility is then transferred to the selected target functional server node without interrupting service to the given mobile terminal.

Pool of functional server nodes in a packet data network and method of transferring a mobile terminal between the server nodes in the pool

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Askim, Sweden

Staffan Bonnier