Geo redundancy aware network slice management function (NSMF) in a wireless network system

1 . A method performed by an active-network slice management function (NSMF) of an active-cloud orchestrator node for geo redundancy (GR) awareness, the method comprising:

sending, to a GR controller of the active-cloud orchestrator node, a GR information request message to receive GR information;

receiving, from the GR controller of the active-cloud orchestrator node, a GR information response message comprising the GR information including a synchronization status between the active-NSMF and a standby-NSMF of a standby-cloud orchestrator node and a current state of each of the active-NSMF and the standby-NSMF, wherein the standby-cloud orchestrator node is located at a location different from a location where the active-cloud orchestrator node is located;

determining at least one action to be performed based on the GR information; and

performing the at least one action for life cycle management (LCM) operation.

2 . The method of claim 1 , wherein the GR information further comprises a current state of an active Element Management System (EMS) associated with the active-NSMF and a standby EMS associated with the standby-NSMF.

3 . The method of claim 1 , wherein the GR information of the GR information of the standby-cloud orchestrator node is stored in the GR controller of the standby-cloud orchestrator node by sending, from the GR controller of the active-cloud orchestrator node to the GR controller of the standby-cloud orchestrator node, a data synchronization request message and by receiving, by the GR controller of the active-cloud orchestrator node, a data synchronization response message comprising the GR information from the GR controller of the standby-cloud orchestrator node.

4 . The method of claim 1 , wherein the performing, by the active-NSMF of the active-cloud orchestrator node, of the at least one action comprises:

performing the LCM operation for at least one of monitoring at least one of a network slice instance (NSI) event and a network slice subnet instance (NSSI) event, subscribing for events and processing notification from at least one of an EMS, an NSI, an NSSI and network functions (NFs), and monitoring at least one of an NSI, an NSSI fault management (FM), and a performance management (PM) in response to determining that the synchronization status is normal and the current state of the active-NSMF is active, the synchronization status is abnormal and the current state of the active-NSMF is active, the synchronization status is unknown and the current state of the active-NSMF is active, or the synchronization status is unknown and the current state of the active-NSMF is standby.

5 . The method of claim 1 , wherein the performing, by the active-NSMF of the active-cloud orchestrator node, of the at least one action comprises:

skipping the LCM operation for at least one of monitoring at least one of a NSI event and a NSSI event, subscribing for events and notification from at least one of an EMS, an NSI, an NSSI and NFs, and monitoring at least one of a NSI, a NSSI FM, and a PM in response to determining that the synchronization status is normal and the current state of the active-NSMF is standby, or the synchronization status is abnormal and the current state of the active-NSMF is standby.

6 . The method of claim 1 , further comprising:

sending, to an active EMS, a registration request message to register the active-NSMF with the active EMS; and

receiving, from the active EMS, a registration response message confirming registration of the active-NSMF with the active EMS.

7 . The method of claim 1 , further comprising:

sending, to a standby EMS, a registration request message to register the active-NSMF with the standby EMS; and

receiving, from the standby EMS, a registration response message confirming registration of the active-NSMF with the standby EMS.

8 . The method of claim 1 , further comprising:

sending, to an active EMS, a subscription or publication notification request message to receive notification corresponding to specific events associated with the standby-cloud orchestrator node; and

receiving, from the active EMS, a subscription or publication notification response message confirming subscription for the notification corresponding to specific events associated with the standby-cloud orchestrator node.

9 . The method of claim 1 , further comprising:

sending, to a standby EMS, a subscription or publication notification request message to receive notification corresponding to specific events associated with the standby-cloud orchestrator node; and

receiving, from the standby EMS, a subscription or publication notification response message confirming subscription for the notification corresponding to specific events associated with the standby-cloud orchestrator node.

10 . The method of claim 1 , wherein the standby-NSMF of the standby-cloud orchestrator node is switched to a new active-NSMF in response to determining that the active NSMF of the active-cloud orchestrator node is down.

11 . The method of claim 1 , wherein the method comprises:

correlating data from all south bound (SB) subsystem to create a digested metric data;

determining ideal resources at the standby-NSMF required to perform the LCM operation of the at least one state of the plurality of states of the LCM operation based on the digested metric data; and

transmitting a set of data from the digested metric data to the standby-NSMF to perform the LCM operations based on the ideal resources at the standby-NSMF.

12 . The method of claim 1 , wherein the method comprises:

correlating data from all south bound (SB) subsystem to create a digested metric data; and

synchronizing by transmitting a set of data from the digested metric data to the standby-NSMF based on at least one parameter associated with the standby-NSMF.

13 . The method of claim 1 , wherein each of the active-NSMF and the standby-NSMF includes a north bound interface (NBI) and a south bound interface (SBI) configured to manage traffic between the NSMF and a network slice instance (NSI), network slice subnet instance (NSSI), and network functions (NF).

14 . An active-network slice management function (NSMF) of an active-cloud orchestrator node for geo redundancy (GR) awareness, comprising:

memory storing instructions, and

at least one processor,

wherein the instructions, when executed by the at least one processor individually or collectively, cause the active-NSMF to:

send, to a GR controller of the active-cloud orchestrator node, a GR information request message to receive GR information;

receive, from the GR controller of the active-cloud orchestrator node, a GR information response message comprising the GR information including a synchronization status between the active-NSMF and a standby-NSMF of a standby-cloud orchestrator node and a current state of each of the active-NSMF and the standby-NSMF, wherein the standby-cloud orchestrator node is located at a location different from a location where the active-cloud orchestrator node is located;

determine at least one action to be performed based on the GR information; and

perform the at least one action for life cycle management (LCM) operation.

15 . The active-NSMF of claim 14 , wherein the GR information further comprises a current state of an active Element Management System (EMS) associated with the active-NSMF and a standby EMS associated with the standby-NSMF.

16 . The active-NSMF of claim 14 , wherein the GR information of the GR information of the standby-cloud orchestrator node is stored in the GR controller of the standby-cloud orchestrator node by sending, from the GR controller of the active-cloud orchestrator node to the GR controller of the standby-cloud orchestrator node, a data synchronization request message and by receiving, by the GR controller of the active-cloud orchestrator node, a data synchronization response message comprising the GR information from the GR controller of the standby-cloud orchestrator node.

17 . The active-NSMF of claim 14 , wherein the instructions, when executed by the at least one processor individually or collectively, cause the active-NSMF for the performing, by the active-NSMF of the active-cloud orchestrator node, of the at least one action to:

perform the LCM operation for at least one of monitoring at least one of a network slice instance (NSI) event and a network slice subnet instance (NSSI) event, subscribing for events and processing notification from at least one of an EMS, an NSI, an NSSI and network functions (NFs), and monitoring at least one of an NSI, an NSSI fault management (FM), and a performance management (PM) in response to determining that the synchronization status is normal and the current state of the active-NSMF is active, the synchronization status is abnormal and the current state of the active-NSMF is active, the synchronization status is unknown and the current state of the active-NSMF is active, or the synchronization status is unknown and the current state of the active-NSMF is standby.

18 . The active-NSMF of claim 14 , wherein the instructions, when executed by the at least one processor individually or collectively, cause the active-NSMF for the performing, by the active-NSMF of the active-cloud orchestrator node, of the at least one action to:

skip the LCM operation for at least one of monitoring at least one of a NSI event and a NSSI event, subscribing for events and notification from at least one of an EMS, an NSI, an NSSI and NFs, and monitoring at least one of a NSI, a NSSI FM, and a PM in response to determining that the synchronization status is normal and the current state of the active-NSMF is standby, or the synchronization status is abnormal and the current state of the active-NSMF is standby.

19 . A non-transitory computer-readable storage medium, when individually or collectively executed by at least one processor of an active-network slice management function (NSMF) of an active-cloud orchestrator node for geo redundancy (GR) awareness, stores one or more programs including instructions that cause the active-NSMF to:

send, to a GR controller of the active-cloud orchestrator node, a GR information request message to receive GR information;

receive, from the GR controller of the active-cloud orchestrator node, a GR information response message comprising the GR information including a synchronization status between the active-NSMF and a standby-NSMF of a standby-cloud orchestrator node and a current state of each of the active-NSMF and the standby-NSMF, wherein the standby-cloud orchestrator node is located at a location different from a location where the active-cloud orchestrator node is located;

determine at least one action to be performed based on the GR information; and

perform the at least one action for life cycle management (LCM) operation.

20 . The non-transitory computer-readable storage medium of claim 19 , wherein the GR information further comprises a current state of an active Element Management System (EMS) associated with the active-NSMF and a standby EMS associated with the standby-NSMF.