Telefonaktiebolaget Lm Ericsson (publ)

Balázs Pinczel

Dániel Géhberger

Péter Mátray

Dinand Roeland

Zoltán Turányi

András Zahemszky

Gabor Nemeth

Gábor Németh

Mate Imre Nagy

Gergely Pongrácz

Dietmar Fiedler

András CSÁSZÁR

Dániel GÉHBERGER

There is provided a method for handling execution of a function in a function-as-a-service (FaaS) system. According to the method, in response () to a trigger on a first node of the FaaS system for execution of a function, execution of the function is initiated () on the first node of the FaaS system if data to be accessed for the execution is stored on the first node of the FaaS system and/or execution of the function is initiated () on a second node of the FaaS system if the data to be accessed for the execution is stored on the second node of the FaaS system.

Handling execution of a function

According to an aspect there is provided a computer-implemented method of operating a leader server in a leader server-follower server log replication configuration. The method comprises (i) storing () a current master state of a system and maintaining a master log relating to the current master state, wherein the master log comprises a plurality of log entries each having a respective log index, wherein each log entry indicates a respective change to the master state of the system; (ii) performing () a log compaction procedure to remove from the master log any log entry for which the respective change to the master state of the system has been overridden by a change to the master state in a subsequent log entry; (iii) storing () a compaction index that is the highest log index of the log entries removed in the log compaction procedure; (iv) storing () an override index that is the highest log index of the log entries for which the respective change to the master state overrode a change to the master state by an earlier log entry; and (v) sending () the compaction index and the override index to one or more follower servers that are to store a replica of the master log relating to the current master state.

Checking state consistency in a log replication configuration

A technique for application level based connection handling in a system comprising a plurality of distributed applications () is disclosed. A method implementation of the technique is performed by a connection handling component () operating at application Level and providing an interface () towards a first application () of the plurality of distributed applications () for establishing a connection with a second application () of the distributed plurality of applications (). The method comprises establishing, upon request of the first application () via the interface (), a connection with the second application (), and maintaining the connection on behalf of the first application () for communication between the first application () and the second application ().

Technique for connection handling in a distributed system

Methods and apparatus for fast session restoration of user sessions in a network node are suitable for latency sensitive applications. The fast session restoration techniques take advantage of the layered architecture of a network node and stores layer-specific descriptors that describe the states of corresponding service layers of a network node for an active session. When a failure of the network nodes occurs, the descriptors are used to achieve a seamless and fast session restoration.

Fast session restoration for latency sensitive middleboxes

Embodiments of a method of operation of a service requestor to request a service from a chain controller in a cellular communications network in which a user plane function is decomposed into a plurality of micro user plane functions are disclosed. In some embodiments, the method comprises sending, to the chain controller, a service description or a request to update a service description. The service description comprises one or more service template instances having respective service template definitions. Each service template definition of the respective service template definitions being data that defines a set of micro user plane functions that realize a service or a part of a service. Each service template instance of the one or more service template instances comprises data that defines a reference to the respective service template definition. The method further comprises receiving a reply from the chain controller.

Requesting flexible user-plane services in a service-based architecture

A method and control plane node capable of receiving, from a requester, a request for a unique identifier, selecting an identifier from a pool comprising a plurality of unique identifiers held by the control plane node, creating a key representing the selected identifier in the pool, attempting to write to an initial version of a value of the created key in order to create a key-value pair in the key-value store, wherein the writing is successful if no write previously has been performed to said initial version of the value, and if so returning, to the requester, the selected identifier as an allocated identifier.

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Budapest, Hungary

Balázs Pinczel