US 12,034,590 B2
Simplified operation and architecture of a central office point of delivery within a broadband access network of a telecommunications network
Thomas Haag, Rodgau (DE); Hans-Joerg Kolbe, Darmstadt (DE); Fabian Schneider, Darmstadt (DE); and Sabine Szuppa, Storkow (DE)
Assigned to DEUTSCHE TELEKOM AG, Bonn (DE)
Appl. No. 17/298,627
Filed by Deutsche Telekom AG, Bonn (DE)
PCT Filed Dec. 2, 2019, PCT No. PCT/EP2019/083365
§ 371(c)(1), (2) Date May 31, 2021,
PCT Pub. No. WO2020/114986, PCT Pub. Date Jun. 11, 2020.
Claims priority of application No. 18209907 (EP), filed on Dec. 3, 2018.
Prior Publication US 2022/0052911 A1, Feb. 17, 2022
Int. Cl. H04L 41/0803 (2022.01); H04L 12/44 (2006.01); H04L 12/46 (2006.01)
CPC H04L 41/0803 (2013.01) [H04L 12/44 (2013.01); H04L 12/4633 (2013.01)] 7 Claims
OG exemplary drawing
 
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.