Patent US10547505

Software defined networking for edge nodes
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US10547505

1. A method, comprising: (11) (6)

decomposing functionalities of an edge node of a wireless communications system into a plurality of partitions comprised of: at least one application part for executing at least gateway signaling plane functions and that interfaces logically to other signaling entities;

at least one control part for executing at least transport functions, wherein one of the transport functions comprises steering transport resources; and

at least one network element part for executing at least tunnel handling functions, wherein one of the tunnel handling functions comprises forwarding data;

virtualizing the at least one application part;

configuring the at least one network element to perform at least one tunnel handling function; and

instantiating the control part as at least one software-defined networking (SDN) controller, and where the at least one network element is comprised of a plurality of SDN controller configurable ports to receive data and to send data,

wherein the at least one application part, the at least one control part, and the at least one network element part are all located within the edge node, and

wherein the SDN controller is coupled with a network element capabilities database, the method further comprising sending a capabilities enquiry to one or more network elements, receiving a capabilities response from the one or more network elements, and storing network element capabilities information in the capabilities database.

2. The method as in claim 1, where configuring is performed in response to a request made to said at least one control part by said at least one application part. (0)

3. The method as in claim 1, where virtualizing instantiates said at least one application part on a virtual machine in a cloud environment. (0)

4. The method as in claim 1, where the at least one network element is further configured to receive data from a tunnel at a first port, to terminate the tunnel, and to send data that was encapsulated in the tunnel from a second port. (0)

5. The method as in claim 1, where the at least one network element is further configured to receive data at a first port, to encapsulate the data in accordance with predetermined tunnel parameters, and to send the encapsulated data as tunneled data from a second port. (0)

6. The method as in claim 1, where the at least one network element is further configured to perform traffic shaping for data received at a first port in accordance with predetermined traffic shaping parameters, and to send the traffic shaped data from a second port. (0)

7. The method as in claim 1, where the at least one network element is further configured to perform encryption of data received at a first port in accordance with predetermined encryption parameters, and to send the encrypted data from a second port. (0)

8. The method as in claim 1, where the at least one network element is further configured to perform decryption of encrypted data received at a first port in accordance with predetermined decryption parameters, and to send the decrypted data from a second port. (0)

9. The method as in claim 1, where the at least one network element is further configured to store executable code defining processing rules, to perform processing of data received at a first port in accordance with the processing rules, and to send the processed data from a second port. (0)

10. The method as in claim 1, where the at least one network element is further configured to receive data at a first port, to examine the received data, and to route the data to either a second port or a third port based on information stored in a flow table. (0)

11. The method as in claim 1, where the network element is comprised of n ports and where the SDN controller is constrained to use m ports, where m<n. (1) (0)

13. The method as in claim 1, where a capabilities response received from a particular network element indicates that the network element has at least one or more of a routing capability, a tunnel handling capability, an encryption/decryption capability, a traffic shaping capability, and an ability to be programmed to have a particular capability or capabilities. (0)

14. An apparatus, comprising: (3) (8)

at least one processor; and

at least one memory including computer program code, where the at least one memory and computer program code are configured to, with the at least one processor, cause the apparatus at least to:

decompose functionalities of an edge node of a wireless communications system into a plurality of partitions comprised of: at least one application part for executing at least gateway signaling plane functions and that interfaces logically to other signaling entities;

at least one control part for executing at least transport functions, wherein one of the transport functions comprises steering transport resources; and

at least one network element part for executing at least tunnel handling functions, wherein one of the tunnel handling functions comprises forwarding data;

virtualize the at least one application part;

configure the at least one network element to perform at least one tunnel handling function; and

instantiate the control part as at least one software-defined networking (SDN) controller, and where the at least one network element is comprised of a plurality of SDN controller configurable ports to receive data and to send data,

wherein the at least one application part, the at least one control part, and the at least one network element part are all located within the edge node, and

wherein the SDN controller is coupled with a network element capabilities database, the apparatus further caused to send a capabilities enquiry to one or more network elements, receive a capabilities response from the one or more network elements, and store network element capabilities information in the capabilities database.

15. The apparatus as in claim 14, where the at least one network element is further configured to receive data from a tunnel at a first port, to terminate the tunnel and to send data that was encapsulated in the tunnel from a second port. (0)

16. The apparatus as in claim 14, where the at least one network element is further configured to receive data at a first port, to encapsulate the data in accordance with predetermined tunnel parameters, and to send the encapsulated data as tunneled data from a second port. (0)

18. The apparatus as in claim 14, where virtualizing instantiates said at least one application part on a virtual machine in a cloud environment. (0)

17. A network element included in an edge node that executes at least tunnel handling functions, comprising: (0) (7)

a flow table;

a first interface for coupling with at least one software defined networking (SDN) controller; and

a second interface comprising a plurality of ports configurable by the at least one SDN controller while observing constraints imposed by said flow table,

wherein said network element included in the edge node being preconfigured or configurable to operate on data that is received at a first port, to process the received data in a manner that modifies the received data, and to send processed data from a second port,

wherein the network element is one of a plurality of partitions decomposed from the edge node,

wherein the SDN controller is coupled with a network element capabilities database, and

wherein the network element is configured to receive a capabilities enquiry, and send a capabilities response in response to the capabilities enquiry.

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Patent US10547505

Software defined networking for edge nodes

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