Operation of a broadband access network of a telecommunications network comprising a plurality of central office points of delivery

Patent metadata

Field	Value
Publication number	US-11558290-B2
Application number	US-202117407217-A
Country	US
Kind code	B2
Filing date	Aug 20, 2021
Priority date	Aug 24, 2020
Publication date	Jan 17, 2023
Grant date	Jan 17, 2023

Abstract

A method for operation of a broadband access network of a telecommunications network includes: in a first step, a first access functionality primarily associated with a first central office point of delivery is also connected to a second central office point of delivery, and a second access functionality primarily associated with the second central office point of delivery is also connected to the first central office point of delivery; and in a second step, the cluster controller and both a first control functionality or control plane of the first central office point of delivery and a second control functionality or control plane of the second central office point of delivery control whether the first and second access functionalities are served by the first central office point of delivery or second central office point of delivery.

First claim

The invention claimed is:

1. A method for operation of a broadband access network of a telecommunications network, comprising:
in a first step, a first access functionality associated with a first central office point of delivery is connected to a second central office point of delivery, and a second access functionality associated with the second central office point of delivery is connected to the first central office point of delivery, wherein the first and second central office points of delivery are both part of a central office point of delivery cluster associated with a cluster controller providing a common control and transport plane for the first and second central office points of delivery; and
in a second step, the cluster controller and both a first control functionality or control plane of the first central office point of delivery and a second control functionality or control plane of the second central office point of delivery control whether the first and second access functionalities are served by the first central office point of delivery or the second central office point of delivery;
wherein each one of the first and second central office points of delivery comprises a respective switching fabric, wherein each respective switching fabric comprises a respective plurality of spine network nodes and a respective plurality of leaf network nodes, and wherein a respective leaf network node provides an edge functionality or service; and
wherein the cluster controller provides for sharing of edge functionalities or services across the first and second central office points of delivery.

2. The method according to claim 1 , wherein in the second step, the cluster controller and both the first control functionality or control plane and the second control functionality or control plane provide resiliency and/or load sharing related to the first access functionality and the second access functionality via steering activation and deactivation of sessions and/or ports related to respective access nodes or physical subscriber lines.

3. The method according to claim 1 , wherein in the second step, the cluster controller and both the first control functionality or control plane and the second control functionality or control plane provide session and/or service session mirroring from the first central office point of delivery to the second central office point of delivery and/or vice versa.

4. The method according to claim 1 , wherein in the second step, the cluster controller and both the first control functionality or control plane and the second control functionality or control plane provide dynamic handover of a subscriber session from the first central office point of delivery to the second central office point of delivery and/or vice versa.

5. The method according to claim 1 , wherein in the second step, the cluster controller and both the first control functionality or control plane and the second control functionality or control plane provide for replacement of the first central office point of delivery with the second central office point of delivery or vice versa for performing maintenance operations.

6. The method according to claim 1 , wherein the cluster controller of the central office point of delivery cluster acts as a centralized orchestrator controlling at least the first central office point of delivery and second central office point of delivery which are part of the central office point of delivery cluster, wherein the central office point of delivery cluster appears as one single instance of a central office point of delivery to centralized functionalities or network nodes of the telecommunications network, including a centralized management system thereof.

7. The method according to claim 1 , wherein line termination nodes of a respective access functionality are connected, respectively, to at least two leaf network nodes of the plurality of leaf network nodes within a respective central office point of delivery.

8. The method according to claim 1 , wherein the cluster controller provides for service orchestration involving both the first central office point of delivery and the second central office point of delivery.

9. A system for operation of a broadband access network of a telecommunications network, comprising:
a plurality of central office points of delivery, including a first central office point of delivery and a second central office point of delivery, wherein each one of the first and second central office points of delivery comprises a respective switching fabric, wherein each respective switching fabric comprises a respective plurality of spine network nodes and a respective plurality of leaf network nodes, and wherein a respective leaf network node provide an edge functionality or service; and
a cluster controller providing a common control and transport plane for the first and second central office points of delivery, wherein the first and second central office points of delivery are both part of a central office point of delivery cluster associated with the cluster controller
wherein a first access functionality associated with the first central office point of delivery is connected to the second central office point of delivery, and a second access functionality associated with the second central office point of delivery is connected to the first central office point of delivery; and
wherein the cluster controller and both a first control functionality or control plane of the first central office point of delivery and a second control functionality or control plane of the second central office point of delivery are configured to control whether the first and second access functionalities are served by the first central office point of delivery or the second central office point of delivery; and
wherein the cluster controller is configured to provide for sharing of edge functionalities or services across the first and second central office points of delivery.

10. One or more non-transitory computer-readable mediums having processor-executable instructions stored thereon for operation of a broadband access network of a telecommunications network, wherein the processor-executable instructions, when executed, facilitate performance of the following steps:
in a first step, connecting a first access functionality associated with a first central office point of delivery to a second central office point of delivery, and connecting a second access functionality associated with the second central office point of delivery to the first central office point of delivery, wherein the first and second central office points of delivery are both part of a central office point of delivery cluster associated with a cluster controller providing a common control and transport plane for the first and second central office points of delivery; and
in a second step, controlling, by the cluster controller and both a first control functionality or control plane of the first central office point of delivery and a second control functionality or control plane of the second central office point of delivery, whether the first and second access functionalities are served by the first central office point of delivery or the second central office point of delivery;
wherein each one of the first and second central office points of delivery comprises a respective switching fabric, wherein each respective switching fabric comprises a respective plurality of spine network nodes and a respective plurality of leaf network nodes, and wherein a respective leaf network node provides an edge functionality or service; and
wherein the cluster controller provides for sharing of edge functionalities or services across the first an

Assignees

• Deutsche Telekom Ag

Inventors

• Haag Thomas
• Soukup Robert

Classifications

• H04L45/70

  Routing based on monitoring results · CPC title

• H04L47/125

  by balancing the load, e.g. traffic engineering · CPC title

• H04L41/32

  Specific management aspects for broadband networks · CPC title

• H04L41/5054

  Automatic deployment of services triggered by the service manager, e.g. service implementation by automatic configuration of network components · CPC title

• H04L12/2801 Primary

  Broadband local area networks · CPC title