System and methods for managing a user data path

Patent metadata

Field	Value
Publication number	US-11153802-B2
Application number	US-201916527440-A
Country	US
Kind code	B2
Filing date	Jul 31, 2019
Priority date	Oct 13, 2014
Publication date	Oct 19, 2021
Grant date	Oct 19, 2021

Abstract

Aspects of the subject disclosure may include, for example, a device that determines each of a default downlink forwarding address of a first interface of a user plane and a currently used downlink forwarding address of the first interface of the user plane. One of an uplink user data packet comprising an origination address of a second interface of the user plane, a downlink user data packet comprising a destination address of the second interface of the user plane or both are received, by way of the user plane. One of the default downlink forwarding address, the currently used downlink forwarding address or both can be modified based on the uplink origination address, the destination address or both. Modification of the default downlink forwarding address, the currently used downlink forwarding address or both results in a redirection of an associated packet flow within the user plane. Other embodiments are disclosed.

First claim

What is claimed is:

1. A device, comprising:
a processing system including a processor; and
a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations comprising:
modifying a first forwarding address of a first interface of a user plane based on an origination address of a second interface of the user plane, a destination address of the second interface of the user plane or both, wherein the modifying of the first forwarding address redirects an associated packet flow within the user plane over a direct tunnel established between an e-node B and a packet data network serving gateway of a core network; and
terminating, in response to receiving an end-marker message, the direct tunnel.

2. The device of claim 1 , wherein the first forwarding address comprises a default downlink forwarding address and a currently used downlink forwarding address.

3. The device of claim 2 , wherein the operations further comprise forwarding a downlink packet using the default downlink forwarding address, subsequent to the terminating the direct tunnel.

4. The device of claim 2 , wherein the modifying the first forwarding address comprises modifying one of the default downlink forwarding address, the currently used downlink forwarding address or both, and wherein the modifying is accomplished without a corresponding exchange of messages in a control plane usable to configure packet data forwarding within the user plane.

5. The device of claim 1 , wherein the end-marker message indicates an end of a payload stream on the direct tunnel.

6. The device of claim 1 , wherein the operations further comprise receiving, by way of the user plane, one of an uplink user data packet comprising the origination address, a downlink user data packet comprising the destination address or both.

7. The device of claim 1 , wherein the operations further comprise:
receiving a request to establish the direct tunnel; and
determining eligibility for establishing the direct tunnel in accordance with predetermined eligibility criteria.

8. The device of claim 1 , wherein the operations further comprise determining whether the direct tunnel has been established between the e-node B and the packet data network serving gateway of the core network.

9. The device of claim 8 , wherein the determining whether the direct tunnel has been established further comprises detecting a direct tunnel indictor.

10. The device of claim 1 , wherein the core network comprises a long-term evolution core network, and wherein the end-marker message comprises a serving gateway S5 user plane address.

11. A non-transitory machine-readable storage medium comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations, the operations comprising:
receiving a request for a network connection including a tunnel solution;
modifying a first forwarding address of a first interface of a user plane based on an origination address of a second interface of the user plane, a destination address of the second interface of the user plane or both, wherein the modifying of the first forwarding address redirects an associated packet flow within the user plane over a direct tunnel established, in response to the request, between an e-node B and a packet data network serving gateway of a core network; and
terminating, in response to receiving an end-marker message, the direct tunnel.

12. The non-transitory machine-readable storage medium of claim 11 , wherein the first forwarding address comprises a default downlink forwarding address and a currently used downlink forwarding address.

13. The non-transitory machine-readable storage medium of claim 12 , wherein the operations further comprise forwarding a downlink packet using the default downlink forwarding address, subsequent to the terminating the direct tunnel.

14. The non-transitory machine-readable storage medium of claim 12 , wherein the modifying the first forwarding address comprises modifying one of the default downlink forwarding address, the currently used downlink forwarding address or both.

15. The non-transitory machine-readable storage medium of claim 11 , wherein the operations further comprise receiving, by way of the user plane, one of an uplink user data packet comprising the origination address, a downlink user data packet comprising the destination address or both.

16. A method comprising:
determining, by a processing system including a processor, whether a direct tunnel has been established between an e-node B and a packet data network serving gateway of a core network;
modifying, by the processing system, a first forwarding address of a first interface of a user plane based on an origination address of a second interface of the user plane, a destination address of the second interface of the user plane or both, wherein the modifying of the first forwarding address redirects an associated packet flow within the user plane over the direct tunnel; and
terminating, by the processing system in response to receiving an end-marker message, the direct tunnel.

17. The method of claim 16 , wherein the first forwarding address comprises a default downlink forwarding address and a currently used downlink forwarding address.

18. The method of claim 17 , further comprising forwarding, by the processing system, a downlink packet using the default downlink forwarding address, subsequent to the terminating the direct tunnel.

19. The method of claim 17 , wherein the modifying the first forwarding address comprises modifying one of the default downlink forwarding address, the currently used downlink forwarding address or both.

20. The method of claim 16 , further comprising receiving, by the processing system via the user plane, one of an uplink user data packet comprising the origination address, a downlink user data packet comprising the destination address or both.

Assignees

• At & T Ip I Lp

Inventors

• Wang Jiansong
• Dahan Joseph
• Redfern Ryan

Classifications

• H04W28/12 Primary

  using signalling between network elements · CPC title

• H04W76/12

  Setup of transport tunnels · CPC title

• H04W76/22

  Manipulation of transport tunnels · CPC title

• H04W40/04 Primary

  based on wireless node resources · CPC title

• H04W76/32

  Release of transport tunnels · CPC title