Controlling of communication network comprising virtualized network functions

• US 10,652,088 B2
• Filed: 02/28/2018
• Issued: 05/12/2020
• Est. Priority Date: 01/17/2014
• Status: Active Grant

• Current Assignee: Nokia Solutions and Networks GmbH & Co. KG (Nokia Corporation)
• Original Assignee: Nokia Solutions and Networks GmbH & Co. KG (Nokia Corporation)
• Inventors: Hoffmann, Klaus
• Primary Examiner(s): Taylor, Nicholas R
• Assistant Examiner(s): Kim, Chong G
• Application Number:
  US15/907,455
• Publication Number:
  US 20180191567A1
• Time in Patent Office: 804 Days
• Field of Search: 709223
• CPC Class Codes: G06F 16/951 Indexing; Web crawling techniques
• CPC Class Codes: G06F 2009/45575 Starting, stopping, suspending or resuming virtual machine instances
• CPC Class Codes: G06F 2009/45595 Network integration; Enabling network access in virtual machine instances
• CPC Class Codes: G06F 9/442 Shutdown
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects
• CPC Class Codes: G06F 9/485 Task life-cycle, e.g. stopping, restarting, resuming execution G06F9/4881 takes precedence
• CPC Class Codes: G06F 9/5072 Grid computing
• CPC Class Codes: G06F 9/542 Event management; Broadcasting; Multicasting; Notifications
• CPC Class Codes: H04L 41/0813 characterised by the conditions triggering a change of settings
• CPC Class Codes: H04L 41/0895 Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition

Abstract

An apparatus and method which obtain an indication related to a de-instantiation of at least one virtualized network function providing services to a communication network. The obtained indication is used for determining or recognizing the virtualized network function being de-instantiated and for avoiding conducting a communication attempt to the virtualized network function to be de-instantiated.

Claims

1. An apparatus comprising:

at least one processor, and

at least one memory for storing instructions to be executed by the processor, wherein

the at least one memory and the instructions are configured to, with the at least one processor, cause the apparatus at least to;

obtain an indication related to a de-instantiation of at least one virtualized network function providing services related to a communication network, wherein the at least one virtualized network function to be de-instantiated is a party in the communication network being different to the party of the communication network where the apparatus is included, and wherein the indication is obtained from a communication network control element or communication network control function being different to the at least one virtualized network function to be de-instantiated and being different to the party where the apparatus is included, and

process the obtained indication for determining or recognizing the virtualized network function being de-instantiated and for avoiding to conduct a communication attempt to the virtualized network function to be de-instantiated when continuing a communication in the communication network after the de-instantiation of the at least one virtualized network function,

wherein the indication related to the de-instantiation of the at least one virtualized network function is obtained from one of

a communication network control element or communication network control function acting as a global orchestrator for implementing virtualized network functions, and

an operation and maintenance element of the communication network.

2. The apparatus according to claim 1, wherein the at least one memory and the instructions are further configured to, with the at least one processor, cause the apparatus at least to:

obtain, as the indication related to the de-instantiation of the at least one virtualized network element, an identification information indicating that the at least one virtualized network element to be de-instantiated is de-instantiated and not available anymore.

3. The apparatus according to claim 2, wherein the at least one memory and the instructions are further configured to, with the at least one processor, cause the apparatus at least to:

check, when a communication attempt is to be conducted to a network element or network function of the communication network, whether the network element or network function is indicated in the identification information indicating the at least one virtualized network element to be de-instantiated as being de-instantiated and not available anymore, and

in case the result of the check is affirmative,

skip immediately the communication attempt to the virtualized network function being de-instantiated.

4. The apparatus according to claim 1, wherein the at least one memory and the instructions are further configured to, with the at least one processor, cause the apparatus at least:

query a database to which network elements or network functions of the communication network have access, wherein the database is comprised in at least one of a centralized database of the communication network and a local database comprised in one or more of the network elements or network functions of the communication network, wherein the indication related to a de-instantiation of at least one virtualized network function is obtained from the database.

5. The apparatus according to claim 1, wherein

the apparatus is implemented by one of a communication element comprising a terminal device or user equipment capable of communicating in the communication network, a network element or network function of a radio access network part of the communication network, and a network element or network function of a core network part of the communication network,

wherein the virtualized network function to be de-instantiated is related to a communication network control function of the communication network.

6. A method, comprising:

obtaining an indication related to a de-instantiation of at least one virtualized network function providing services related to a communication network, wherein the at least one virtualized network function to be de-instantiated is a party in the communication network being different to the party of the communication network where the apparatus is included, and wherein the indication is obtained from a communication network control element or communication network control function being different to the at least one virtualized network function to be de-instantiated and being different to the party where the apparatus is included, and

processing the obtained indication for determining or recognizing the virtualized network function being de-instantiated and for avoiding to conduct a communication attempt to the virtualized network function to be de-instantiated when continuing a communication in the communication network after the de-instantiation of the at least one virtualized network function,

wherein the indication related to the de-instantiation of the at least one virtualized network function is obtained from one of

a communication network control element or communication network control function acting as a global orchestrator for implementing virtualized network functions, and

an operation and maintenance element of the communication network.

7. The method according to claim 6, further comprising

obtaining, as the indication related to the de-instantiation of the at least one virtualized network element, an identification information indicating that the at least one virtualized network element to be de-instantiated is de-instantiated and not available anymore.

8. The method according to claim 7, further comprising:

checking, when a communication attempt is to be conducted to a network element or network function of the communication network, whether the network element or network function is indicated in the identification information indicating the at least one virtualized network element to be de-instantiated as being de-instantiated and not available anymore; and

in case the result of the check is affirmative,

skipping immediately the communication attempt to the virtualized network function being de-instantiated.

9. The method according to claim 6, further comprising

querying a database to which network elements or network functions of the communication network have access, wherein the database is comprised in at least one of a centralized database of the communication network and a local database comprised in one or more of the network elements or network functions of the communication network, wherein the indication related to a de-instantiation of at least one virtualized network function is obtained from the database.

10. The method according to claim 6, wherein

the method is executed by one of a communication element comprising a terminal device or user equipment capable of communicating in the communication network, a network element or network function of a radio access network part of the communication network, and a network element or network function of a core network part of the communication network,

wherein the virtualized network function to be de-instantiated is related to a communication network control function of the communication network.

11. A non-transitory computer-readable medium storing instructions that, when executed by a processing device, cause the processing device to perform:

obtaining an indication related to a de-instantiation of at least one virtualized network function providing services related to a communication network, wherein the at least one virtualized network function to be de-instantiated is a party in the communication network being different to the party of the communication network where the computer program product is implemented, and wherein the indication is obtained from a communication network control element or communication network control function being different to the at least one virtualized network function to be de-instantiated and being different to the party where the computer program product is implemented; and

processing the obtained indication for determining or recognizing the virtualized network function being de-instantiated and for avoiding to conduct a communication attempt to the virtualized network function to be de-instantiated when continuing a communication in the communication network after the de-instantiation of the at least one virtualized network function,

wherein the indication related to the de-instantiation of the at least one virtualized network function is obtained from one of

a communication network control element or communication network control function acting as a global orchestrator for implementing virtualized network functions, and

an operation and maintenance element of the communication network.