Providing continuous service in wireless communication network

Patent metadata

Field	Value
Publication number	US-12439282-B2
Application number	US-202318024388-A
Country	US
Kind code	B2
Filing date	Feb 2, 2023
Priority date	Dec 22, 2022
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

Embodiments are directed to a system for providing continuous service in a wireless communication network. The system includes a communication management controller, a first DU connected to the communication management controller for communicating with a CU and a second DU. Traffic associated with the first DU is provided as input to an active port of the communication management controller and the first DU is configured to set an alarm signal to a control port of the communication management controller indicating an active status of the first DU. The communication management controller determines a failure of the first DU based on the alarm signal is not set and automatically switches the input from the active port to a default port of the communication management controller and provide continuous service in the wireless communication network by redirecting traffic associated with the first DU towards the second DU.

First claim

We claim:

1. A system for providing continuous service in a wireless communication network, wherein the system comprises:
a communication management controller comprising a plurality of ports;
a first distributed unit (DU) of a plurality of DUs connected to the communication management controller for communicating with a centralized unit (CU), wherein traffic associated with the first DU is provided as input to an active port of the communication management controller and the first DU is configured to set an alarm signal to a control port of the communication management controller indicating an active status of the first DU;
at least one second DU of the plurality of DUs connected to the first DU; and
wherein the communication management controller is configured to:
determine the alarm signal to the control port of the communication management controller is not set,
determine a failure of the first DU based on the alarm signal to the control port of the communication management controller is not set,
automatically switch the input from the active port to a default port of the communication management controller, wherein the default port is connected to the at least one second DU, and
provide continuous service in the wireless communication network by redirecting traffic associated with the first DU towards the at least one second DU.

2. The system as claimed in the claim 1 , wherein the first DU is a lead DU and the first DU and the at least one second DU is hosting at least one band of a plurality of bands.

3. The system as claimed in the claim 1 , wherein the at least one second DU forwards midhaul (MH) traffic to the first DU via at least one cascading link (CL) between the first DU and the at least one second DU, and the first DU forwards the MH traffic to the CU through the communication management controller and wherein the traffic from the CU towards the at least one second DU is routed by the first DU to the at least one second DU on the at least one CL between the first DU and the at least one second DU.

4. The system as claimed in the claim 1 , wherein the at least one second DU acts as a lead DU on switching of the input from the active port to the default port of the communication management controller.

5. The system as claimed in the claim 1 , wherein the at least one second DU is further configured to:
determine a priority associated with each of the bands of the plurality of bands to be served by the at least one second DU, wherein the plurality of bands comprises LTE, mmWave and Sub6 5G NR;
determine whether a capacity associated with the at least one second DU meets a DU capacity threshold;
perform one of:
limit a cell capacity of the second DU to serve the LTE, the mmWave and the Sub6 5G NR simultaneously, in response to determining that the capacity associated with the second DU does not meets the DU capacity threshold, and
shutdown the Sub6 5G NR to serve the LTE on full capacity, in response to determining that the capacity associated with the at least one second DU does meets the DU capacity threshold.

6. A method for providing continuous service in a wireless communication network, wherein the method comprises:
determining, by a communication management controller, an alarm signal to a control port of the communication management controller is not set, wherein the alarm signal to a control port of the communication management controller indicates an active status of a first distributed unit (DU) of a plurality of DUs;
determining, by the communication management controller, a failure of the first DU based on the alarm signal to the control port of the communication management controller is not set, wherein traffic associated with the first DU is provided as input to an active port of the communication management controller;
automatically switching, by the communication management controller, the input from the active port to a default port of the communication management controller, wherein the default port is connected to at least one second DU; and
providing, by the communication management controller, continuous service in the wireless communication network by redirecting traffic associated with the first DU towards the at least one second DU.

7. The method as claimed in the claim 6 , wherein the communication management controller comprises a plurality of ports and the first DU is connected to the communication management controller for communicating with a centralized unit (CU).

8. The method as claimed in the claim 6 , wherein the first DU is a lead DU and the first DU and the at least one second DU is hosting at least one band of a plurality of bands.

9. The method as claimed in the claim 6 , wherein the at least one second DU forwards midhaul (MH) traffic to the first DU via at least one cascading link (CL) between the first DU and the at least one second DU, and the first DU forwards the MH traffic to the CU through the communication management controller and wherein the traffic from the CU towards the at least one second DU is routed by the first DU to the at least one second DU on the at least one CL between the first DU and the at least one second DU.

10. The method as claimed in the claim 6 , wherein the at least one second DU acts as a lead DU on switching of the input from the active port to the default port of the communication management controller.

11. The method as claimed in the claim 6 , further comprises:
determining, by the at least one second DU, a priority associated with each of the bands of the plurality of bands to be served by the at least one second DU, one second DU, wherein the plurality of bands comprises LTE, mmWave and Sub6 5G NR;
determining, by the at least one second DU, whether a capacity associated with the at least one second DU meets a DU capacity threshold;
performing, by the at least one second DU, one of:
limiting a cell capacity of the second DU to serve the LTE, the mmWave and the Sub6 5G NR simultaneously, in response to determining that the capacity associated with the second DU does not meets the DU capacity threshold, and
shutting down the Sub6 5G NR to serve the LTE on full capacity, in response to determining that the capacity associated with the second DU does meets the DU capacity threshold.

Assignees

• Rakuten Mobile Inc
• Rakuten Symphony Inc

Inventors

• Goyal Rajesh Kumar
• Vij Vinay
• Patro Ranjeet Kumar
• Sura Satish Babu
• Goel Mudit
• Misra Shashank

Classifications

• H04W88/085

  Access point devices with remote components · CPC title

• H04W24/04 Primary

  Arrangements for maintaining operational condition · CPC title

• H04W76/19 Primary

  Connection re-establishment · CPC title