Simplified operation and architecture of a central office point of delivery within a broadband access network of a telecommunications network

Patent metadata

Field	Value
Publication number	US-12034590-B2
Application number	US-201917298627-A
Country	US
Kind code	B2
Filing date	Dec 2, 2019
Priority date	Dec 3, 2018
Publication date	Jul 9, 2024
Grant date	Jul 9, 2024

Abstract

A method for operation of a central office point of delivery within a broadband access network of a telecommunications network and/or for flexibly providing, within the central office point of delivery, user-related traffic to at least one central functional entity providing at least one specific functionality within the central office point of delivery or for the central office point of delivery includes: in a first step, the user-related traffic is routed to a specific service edge node, wherein the specific service edge node is selected or determined, by at least one repository node, based on the at least one specific network termination node and/or the specific line termination node; and in a second step, the user-related traffic is provided to the at least one central functional entity.

First claim

The invention claimed is:

1. A method for operation of a central office point of delivery within a broadband access network of a telecommunications network and/or for flexibly providing, within the central office point of delivery, user-related traffic to at least one central functional entity providing at least one specific functionality within the central office point of delivery or for the central office point of delivery,
wherein the central office point of delivery and/or the broadband access network comprises a control node or a control plane, at least one repository node and a plurality of line termination nodes, wherein a specific line termination node of the plurality of line termination nodes is connected—via an access node port of the specific line termination node—to at least one specific network termination node of a plurality of network termination nodes,
wherein the central office point of delivery comprises a plurality of service edge nodes and a network node corresponding to the at least one central functional entity,
wherein the broadband access network comprises a switching fabric within the central office point of delivery, the switching fabric comprising a plurality of spine network nodes and a plurality of leaf network nodes,
wherein the method comprises:
performing, by the central office point of delivery, service decomposition on a plurality of tasks, wherein the plurality of tasks include common service edge tasks and specific tasks or functionalities, and wherein performing service decomposition on the plurality of tasks comprises:
in a first step, user-related traffic is routed to a specific service edge node of the plurality of service edge nodes,
wherein the user-related traffic is related to the specific line termination node and to the specific service edge node,
wherein the specific service edge node is connected to a first leaf network node of the plurality of leaf network nodes,
wherein the specific service edge node is selected or determined by the at least one repository node based on the at least one specific network termination node and/or the specific line termination node, and
wherein the specific service edge node performs the common service edge tasks; and

in a second step, the user-related traffic is duplicated and provided to the network node of the central office point of delivery via the switching fabric within the central office point of delivery, wherein the network node is connected to a second leaf network node of the plurality of leaf network nodes, and wherein the network node performs the specific tasks or functionalities;

wherein the common service edge tasks performed by the specific service edge node comprise: point-to-point-protocol (PPP) processing or termination, authentication and authorization of a subscriber, fabric switching, and/or adding and removing tunnel headers; and
wherein the specific tasks or functionalities performed by the network node corresponding to the at least one central functional entity comprise: providing accounting information; processing accounting information; providing performance monitoring; and/or providing a legal interception functionality.

2. The method according to claim 1 , wherein the at least one central functional entity corresponds to a tunnel setup node, wherein the user-related traffic—after having been routed to the specific service edge node—is directed or steered towards the tunnel setup node, wherein the user-related traffic comprises user-related identifier information related to identity information of the at least one specific network termination node and/or related to the access node port.

3. The method according to claim 1 , wherein the at least one central functional entity corresponds to a tunnel setup node, wherein the tunnel setup node is at least one of the following:
a layer 3 bit stream access node acting as a tunnel protocol access concentrator towards a network node of a further telecommunications network in a wholesale scenario,
a virtual private network termination node, or
a generic tunnel setup node.

4. The method according to claim 1 , wherein the user-related traffic—after having been routed to the specific service edge node—is duplicated and provided to the at least one central functional entity based on user-related identifier information, related to identity information of the at least one specific network termination node and/or related to the access node port.

5. The method according to claim 1 , wherein the user-related traffic received by the specific service edge node is subsequently provided to a backbone of the telecommunications network.

6. A telecommunications system, comprising:
a broadband access network comprising a central office point of delivery; and
at least one central functional entity providing at least one specific functionality within the central office point of delivery or for the central office point of delivery;
wherein the central office point of delivery and/or the broadband access network comprises a control node or a control plane, at least one repository node and a plurality of line termination nodes, wherein a specific line termination node of the plurality of line termination nodes is connected—via an access node port of the specific line termination node—to at least one specific network termination node of a plurality of network termination nodes;
wherein the central office point of delivery comprises a plurality of service edge nodes and a network node corresponding to the at least one central functional entity;
wherein the broadband access network comprises a switching fabric within the central office point of delivery, the switching fabric comprising a plurality of spine network nodes and a plurality of leaf network nodes;
wherein the central office point of delivery is configured to perform service decomposition on a plurality of tasks, wherein the plurality of tasks include common service edge tasks and specific tasks or functionalities, and wherein performing service decomposition on the plurality of tasks comprises:
in a first step, user-related traffic is routed to a specific service edge node of the plurality of service edge nodes,
wherein the user-related traffic is related to the specific line termination node and to the specific service edge node,
wherein the specific service edge node is connected to a first leaf network node of the plurality of leaf network nodes,
wherein the specific service edge node is selected or determined by the at least one repository node based on the at least one specific network termination node and/or the specific line termination node, and
wherein the specific service edge node performs the common service edge tasks; and

in a second step, the user-related traffic is duplicated and provided to the network node of the central office point of delivery via the switching fabric within the central office point of delivery,
wherein the network node is connected to a second leaf network node of the plurality of leaf network nodes, and
wherein the network node performs the specific tasks or functionalities;

wherein the common service edge tasks comprise: point-to-point-protocol (PPP) processing or termination, authentication and authorization of a subscriber, fabric switching, and/or adding and removing tunnel headers; and
wherein the specific tasks or functionalities corresponding to the at least one central functional entity comprise: providing accounting information;

processing accounting information; providing performance monitoring; and/or
providing a legal interception functionality.

7. A non-transitory computer-readable medium having processor-executable instructions stored thereon for operation of a central office point of delive

Assignees

• Deutsche Telekom Ag

Inventors

• Haag Thomas
• Kolbe Hans-Joerg
• Schneider Fabian
• Szuppa Sabine

Classifications

• H04L12/4633 Primary

  Interconnection of networks using encapsulation techniques, e.g. tunneling · CPC title

• H04L12/44

  Star or tree networks · CPC title

• H04L41/0806

  for initial configuration or provisioning, e.g. plug-and-play · CPC title

• H04L41/0803 Primary

  Configuration setting · CPC title