# US 2023/0276271 A1 · Managing user experiences during cellular telecommunication network outage utilizing a backup data center

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- Number: US 2023/0276271 A1
- Document ID: US20230276271A1
- Status: Published application
- Kind: A1
- Application number: 17/853,263
- Filed: 2022-06-29
- Published: 2023-08-31
- Earliest claimed: 2022-02-28
- Assignees: DISH Wireless L.L.C.
- Applicants: DISH Wireless L.L.C.
- Inventors: Siddhartha Chenumolu; Ash Khamas; Dhaval Mehta; Gurpreet Sohi
- Web page: https://patentgrep.com/patent/US20230276271A1

## CPC

- H04W 24/04: Arrangements for maintaining operational condition
- H04L 41/0654: using network fault recovery (ring fault isolation or reconfiguration in loop networks without recovery actions by a network management system H04L12/437)
- H04L 41/0668: by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
- H04L 41/147: for predicting network behaviour
- H04L 41/40: using virtualisation of network functions or resources, e.g. SDN or NFV entities
- H04L 45/22: {Alternate routing}
- H04W 24/02: Arrangements for optimising operational condition
- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04W 36/14: Reselecting a network or an air interface
- H04W 36/305: {Handover due to radio link failure (control signalling for hand-off failure H04W36/0079)}
- H04W 76/19: Connection re-establishment
- H04W 76/25: Maintenance of established connections
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04W 76/30: Connection release
- H04L 41/0895: Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements
- H04L 41/16: using machine learning or artificial intelligence
- H04L 43/10: Active monitoring, e.g. heartbeat, ping or trace-route
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Embodiments are directed towards systems and methods for managing user experiences during cellular telecommunication outages within a wireless telecommunication network, such as a wireless 5G network. Example embodiments include systems and methods managing user experiences during a cellular telecommunication network outage utilizing a backup data center. For example, in response to the distributed unit (DU) detecting there exists the failure in communication between the DU and the corresponding primary centralized unit control plane (CU-CP), the system causes the DU to switch from using the corresponding primary CU-CP to using the secondary CU-CP of a secondary CU hosted on the backup cloud-native virtualized compute instance based on utilizing a secondary ID pre-configured on the DU.

## Claims

### Claim 1

A method for managing user experiences during a cellular telecommunication network outage utilizing a backup data center, the method comprising:
providing, by a mobile network operator, a distributed unit (DU) of a fifth-generation New Radio (5G NR) cellular telecommunication network radio access network (RAN) that is served by a particular 5G NR cellular site base station, wherein the DU:
is associated with a primary 5G NR Next Generation Node B (gNb) identified by a primary identifier (ID); and
is in operable communication with a corresponding primary central unit control plane (CU-CP) of a 5G NR primary centralized unit (CU) that is hosted on a cloud-native virtualized compute instance in a primary physical data center and is also associated with the primary gNb identified by the primary ID;
pre-configuring on the DU a secondary ID of a secondary gNb associated with a secondary CU-CP of a secondary 5G NR CU that is hosted on a backup cloud-native virtualized compute instance in a backup physical data center separate from the primary physical data center;
the DU detecting there exists a failure in communication between the DU and the corresponding primary CU-CP; and
in response to the DU detecting there exists the failure in communication between the DU and the corresponding primary CU-CP, causing the DU to switch from using the corresponding primary CU-CP to using the secondary CU-CP of a secondary CU hosted on the backup cloud-native virtualized compute instance based on utilizing the secondary ID pre-configured on the DU.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
instantiating the secondary CU-CP on the backup cloud-native virtualized compute instance in response to the DU detecting there exists the failure in communication between the DU and the corresponding primary CU-CP before the DU switches from using the corresponding primary CU-CP to using the secondary CU-CP.

### Claim 3 (depends on 1)

The method of claim 1, further comprising:
provisioning all the DUs in operable communication with the primary CU-CP to communicate via a pass through edge data center (P-EDC) with both the primary physical data center and the backup physical data center while communication between the DUs and the primary CU-CP is active, wherein the P-EDC provides a direct circuit connection from all the DUs in operable communication with the primary CU-CP directly to the primary physical data center and the backup physical data center.

### Claim 4 (depends on 1)

The method of claim 1, further comprising:
after switching from using the corresponding primary CU-CP to using the secondary CU-CP of the secondary CU hosted on the backup cloud-native virtualized compute instance, the DU detecting there no longer exists the failure in communication between the DU and the corresponding primary CU-CP; and
in response to the DU detecting there no longer exists the failure in communication between the DU and the corresponding primary CU-CP, causing the DU to switch back to using the corresponding primary CU-CP from using the secondary CU-CP of the secondary CU hosted on the backup cloud-native virtualized compute instance based on utilizing the primary ID.

### Claim 5 (depends on 1)

The method of claim 1 wherein the secondary CU-CP on the backup cloud-native virtualized compute instance provides more limited bandwidth capabilities to the DU as compared to the primary CU-CP.

### Claim 6 (depends on 1)

The method of claim 1, further comprising:
resizing a containerized group of microservices corresponding to CUs hosted on one or more backup cloud-native virtualized compute instances in the backup physical data center when adding a containerized microservice corresponding to the secondary CU to the group in response to the DU detecting there exists a failure in communication between the DU and the corresponding primary CU-CP.

### Claim 7 (depends on 6)

The method of claim 6 wherein the resizing comprises:
reducing carrier bandwidth provided by the secondary CU as compared to the primary CU.

### Claim 8 (depends on 6)

The method of claim 6 wherein the resizing comprises adding new computing resources, including an additional cloud-native virtualized compute instance, to the containerized group of microservices to allow the containerized microservice corresponding to the secondary CU to be added to the group.

### Claim 9 (depends on 1)

The method of claim 1 wherein the causing the DU to switch from using the corresponding primary CU-CP to using the secondary CU-CP of the secondary CU hosted on the backup cloud-native virtualized compute instance includes:
in response to the DU detecting there exists a failure in communication between the DU and the corresponding primary CU-CP, an intelligence layer module external to the DU and in communication with the DU, the primary physical data center and the backup physical data center, orchestrating instantiation of the secondary CU-CP on the backup cloud-native virtualized compute instance; and
the intelligence layer module causing, utilizing the secondary ID, the DU to switch from using the corresponding primary CU-CP to using the secondary CU-CP after the instantiation of the secondary CU-CP on the backup cloud-native virtualized compute instance.

### Claim 10 (depends on 9)

The method of claim 9, wherein the intelligence layer module causing the DU to switch from using the corresponding primary CU-CP to using the secondary CU-CP includes:
the intelligence layer module immediately initiating, utilizing the secondary ID, redirection of high priority UEs connected to the DU or high priority services associated with the DU to use services associated with the secondary CU-CP.

### Claim 11 (depends on 10)

The method of claim 10 wherein the intelligence layer module causing the DU to switch from using the corresponding primary CU-CP to using the secondary CU-CP further includes:
after initiating redirection of all high priority UEs connected to the DU or all high priority services associated with the DU, the intelligence layer module selecting certain lower priority UEs connected to the DU or certain lower priority services associated with the DU; and
the intelligence layer module initiating, utilizing the secondary ID, redirection of the selected certain lower priority UEs connected to the DU or the selected certain lower priority services to use services associated with the secondary CU-CP.

### Claim 12 (depends on 11)

The method of claim 11 wherein the secondary CU-CP on the backup cloud-native virtualized compute instance provides more limited bandwidth capabilities to the DU as compared to the primary CU-CP.

### Claim 13 (depends on 9)

The method of claim 9 wherein the intelligence layer module causing the DU to switch from using the corresponding primary CU-CP to using the secondary CU-CP includes:
the intelligence layer module initiating redirection of one or more UEs connected to the DU, or one or more services associated with the DU, to use services associated with the secondary CU-CP based on predictions made by the intelligence layer module regarding future communication failures between the DU and the primary CU-CP.

### Claim 14 (depends on 13)

The method of claim 13 wherein the intelligence layer module initiating redirection of one or more UEs connected to the DU, or one or more services associated with the DU, to use services associated with the secondary CU-CP includes:
the intelligence layer module selecting one or more UEs connected to the DU, or services associated with the DU, for which to initiate redirection to use services associated with the secondary CU-CP based on predictions made by the intelligence layer module regarding future communication failures between the DU and the primary CU-CP;
the intelligence layer module initiating redirection of the selected UEs connected to the DU, or the selected services associated with the DU, to use services associated with the secondary CU-CP; and
the intelligence layer module initiating redirection of one or more non-selected UEs connected to the DU, or one or more non-selected services associated with the DU, to use services of a wireless carrier roaming partner of a particular mobile network operator or another cellular telecommunications service carrier of the particular mobile network operator serviced by another cellular site base station.

### Claim 15

A system for managing user experiences during a cellular telecommunication network outage utilizing a backup data center, the system comprising:
at least one memory that stores computer executable instructions; and
at least one processor that executes the computer executable instructions to cause actions to be performed, the actions including:
providing, by a mobile network operator, a distributed unit (DU) of a fifth-generation New Radio (5G NR) cellular telecommunication network radio access network (RAN) that is served by a particular 5G NR cellular site base station, wherein the DU:
is associated with a primary 5G NR Next Generation Node B (gNb) identified by a primary identifier (ID); and
is in operable communication with a corresponding primary central unit control plane (CU-CP) of a 5G NR primary centralized unit (CU) that is hosted on a cloud-native virtualized compute instance in a primary physical data center and is also associated with the primary gNb identified by the primary ID;
pre-configuring on the DU a secondary ID of a secondary gNb associated with a secondary CU-CP of a secondary 5G NR CU that is hosted on a backup cloud-native virtualized compute instance in a backup physical data center separate from the primary physical data center;
the DU detecting there exists a failure in communication between the DU and the corresponding primary CU-CP; and
in response to the DU detecting there exists the failure in communication between the DU and the corresponding primary CU-CP, causing the DU to switch from using the corresponding primary CU-CP to using the secondary CU-CP of the secondary CU hosted on the backup cloud-native virtualized compute instance based on utilizing the secondary ID pre-configured on the DU.

### Claim 16 (depends on 15)

The system of claim 15, wherein the at least one processor executes the computer instructions to cause further actions to be performed including:
instantiating the secondary CU-CP on the backup cloud-native virtualized compute instance in response to the DU detecting there exists a failure in communication between the DU and the corresponding primary CU-CP before the DU switches from using the corresponding primary CU-CP to using the secondary CU-CP.

### Claim 17 (depends on 15)

The system of claim 15, wherein the at least one processor executes the computer instructions to cause further actions to be performed including:
provisioning all the DUs in operable communication with the primary CU-CP to communicate via a pass through edge data center (P-EDC) with both the primary physical data center and the backup physical data center while communication between the DUs and the primary CU-CP is active, wherein the P-EDC provides a direct circuit connection from all the DUs in operable communication with the primary CU-CP directly to the primary physical data center and the backup physical data center.

### Claim 18

A non-transitory computer-readable storage medium having computer-executable instructions stored thereon that, when executed by at least one processor, cause the at least one processor to cause actions to be performed, the actions including:
providing, by a mobile network operator, a distributed unit (DU) of a fifth-generation New Radio (5G NR) cellular telecommunication network radio access network (RAN) that is served by a particular 5G NR cellular site base station, wherein the DU:
is associated with a primary 5G NR Next Generation Node B (gNb) identified by a primary identifier (ID); and
is in operable communication with a corresponding primary central unit control plane (CU-CP) of a 5G NR primary centralized unit (CU) that is hosted on a cloud-native virtualized compute instance in a primary physical data center and is also associated with the primary gNb identified by the primary ID;
pre-configuring on the DU a secondary ID of a secondary gNb associated with a secondary CU-CP of a secondary 5G NR CU that is hosted on a backup cloud-native virtualized compute instance in a backup physical data center separate from the primary physical data center;
the DU detecting there exists a failure in communication between the DU and the corresponding primary CU-CP; and
in response to the DU detecting there exists a failure in communication between the DU and the corresponding primary CU-CP, causing the DU to switch from using the corresponding primary CU-CP to using the secondary CU-CP of the secondary CU hosted on the backup cloud-native virtualized compute instance based on utilizing the secondary ID pre-configured on the DU.

### Claim 19 (depends on 18)

The non-transitory computer-readable storage medium of claim 18, further comprising:
instantiating the secondary CU-CP on the backup cloud-native virtualized compute instance in response to the DU detecting there exists a failure in communication between the DU and the corresponding primary CU-CP before the DU switches from using the corresponding primary CU-CP to using the secondary CU-CP.

### Claim 20 (depends on 18)

The non-transitory computer-readable storage medium of claim 18, further comprising:
provisioning all the DUs in operable communication with the primary CU-CP to communicate via a pass through edge data center (P-EDC) with both the primary physical data center and the backup physical data center while communication between the DUs and the primary CU-CP is active, wherein the P-EDC provides a direct circuit connection from all the DUs in operable communication with the primary CU-CP directly to the primary physical data center and the backup physical data center.