System and method to facilitate link aggregation using network-based internet protocol (IP) flow mobility in a network environment

Patent metadata

Field	Value
Publication number	US-10506492-B2
Application number	US-201715623247-A
Country	US
Kind code	B2
Filing date	Jun 14, 2017
Priority date	Jun 14, 2017
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

An example method is provided in one example embodiment and may include receiving, at a packet data network gateway (PGW), a packet associated with an Internet Protocol (IP) flow of a user equipment (UE); identifying a routing rule associated with the IP flow, wherein the routing rule comprises routing access information that identifies whether the IP flow can be routed across a plurality of access networks using weighted link aggregation; and selecting a particular access network to facilitate communications for the IP flow of the UE based on the routing rule. In some cases, the selecting can include assigning the IP flow of the UE to a bearer established for the UE for the particular access network.

First claim

What is claimed is:

1. A computer-implemented method comprising:
receiving, at a packet data network gateway (PGW), a packet associated with an Internet Protocol (IP) flow of a user equipment (UE);
identifying a routing rule associated with the IP flow, wherein the routing rule comprises routing access information that identifies whether the IP flow can be routed across a plurality of access networks using weighted link aggregation;
performing a comparison by operation of one or more computer processors, wherein the comparison is selected from: (i) a first comparison of a hash of a flow tuple for the packet against a first threshold value associated with the routing rule; and (ii) a second comparison of each of first and second determined metrics against a second threshold value, wherein the first and second determined metrics are associated with communication quality of first and second access networks to facilitate communications for the IP flow of the UE, respectively; and
identifying, based on the performed comparison, a particular access network to select to facilitate communications for the IP flow of the UE based on the routing rule, wherein the particular access network is selected.

2. The method of claim 1 , wherein the performed comparison comprises the first comparison.

3. The computer-implemented method of claim 2 , wherein the first threshold value is a static weight value that received by the PGW from the UE.

4. The computer-implemented method of claim 1 , wherein the performed comparison comprises the second comparison, wherein the computer-implemented method further comprises determining each of the first and second metrics.

5. The computer-implemented method of claim 4 , further comprising:
storing, by the PGW, flow tuple information included with the packet in association with the selected particular access network in a data structure maintained by the PGW.

6. The computer-implemented method of claim 1 , further comprising:
receiving, by the PGW, an indication from the UE that the UE supports receiving packets using the plurality of access networks using weighted link aggregation; and
storing the indication received from the UE.

7. The computer-implemented method of claim 1 , wherein the plurality of access networks comprise one or more of:
one or more 3rd Generation Partnership Project (3GPP) access network types; and
one or more non-3GPP access network types.

8. The computer-implemented method of claim 1 , further comprising:
assigning the IP flow of the UE to a bearer established for the UE for the particular access network.

9. One or more non-transitory tangible media encoding logic that includes instructions executable to perform an operation comprising:
receiving, at a packet data network gateway (PGW), a packet associated with an Internet Protocol (IP) flow of a user equipment (UE);
identifying a routing rule associated with the IP flow, wherein the routing rule comprises routing access information that identifies whether the IP flow can be routed across a plurality of access networks using weighted link aggregation;
performing a comparison by operation of one or more computer processors when executing the instructions, wherein the comparison is selected from: (i) a first comparison of a hash of a flow tuple for the packet against a first threshold value associated with the routing rule; and (ii) a second comparison of each of first and second determined metrics against a second threshold value, wherein the first and second determined metrics are associated with communication quality of first and second access networks to facilitate communications for the IP flow of the UE, respectively; and
identifying, based on the performed comparison, a particular access network to select to facilitate communications for the IP flow of the UE based on the routing rule, wherein the particular access network is selected.

10. The one or more non-transitory tangible media of claim 9 , wherein the performed comparison comprises the first comparison.

11. The one or more non-transitory tangible media of claim 10 , wherein the first threshold value is a static value that received by the PGW from the UE.

12. The one or more non-transitory tangible media of claim 9 , wherein the performed comparison comprises the second comparison, wherein the operation further comprises determining each of the first and second metrics.

13. The one or more non-transitory tangible media of claim 12 , wherein the operation further comprises:
storing, by the PGW, flow tuple information included with the packet in association with the selected particular access network in a data structure maintained by the PGW.

14. The one or more non-transitory tangible media of claim 9 , wherein the operation further comprises:
receiving, by the PGW, an indication from the UE that the UE supports receiving packets using the plurality of access networks using weighted link aggregation; and
storing the indication received from the UE.

15. The one or more non-transitory tangible media of claim 9 , wherein the operation further comprises:
assigning the IP flow of the UE to a bearer established for the UE for the particular access network.

16. A packet data network gateway (PGW) comprising:
at least one memory element for storing data; and
at least one computer processor to execute instructions associated with the data, wherein executing the instructions causes the PGW to perform an operation comprising:
receiving, at a packet data network gateway (PGW), a packet associated with an Internet Protocol (IP) flow of a user equipment (UE);
identifying a routing rule associated with the IP flow, wherein the routing rule comprises routing access information that identifies whether the IP flow can be routed across a plurality of access networks using weighted link aggregation;
performing a comparison selected from: (i) a first comparison of a hash of a flow tuple for the packet against a first threshold value associated with the routing rule; and (ii) a second comparison of each of first and second determined metrics against a second threshold value, wherein the first and second determined metrics are associated with communication quality of first and second access networks to facilitate communications for the IP flow of the UE, respectively; and
identifying, based on the performed comparison, a particular access network to select to facilitate communications for the IP flow of the UE based on the routing rule, wherein the particular access network is selected.

17. The PGW of claim 16 , wherein the performed comparison comprises the first comparison.

18. The PGW of claim 17 , wherein the first threshold value is a static value that received by the PGW from the UE.

19. The PGW of claim 16 , wherein the performed comparison comprises the second comparison, wherein the operation further comprises determining each of the first and second metrics.

20. The PGW of claim 16 , wherein the operation further comprises:
storing, by the PGW, flow tuple information included with the packet in association with a selected particular access network in a data structure maintained by the PGW.

Assignees

• Cisco Tech Inc

Inventors

• Patil Santosh Ramrao
• Grayson Mark
• Pularikkal Gangadharan Byju

Classifications

• H04L45/24 Primary

  Multipath · CPC title

• H04L45/245

  Link aggregation, e.g. trunking · CPC title

• H04L45/38

  Flow based routing · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W40/12 Primary

  based on transmission quality or channel quality · CPC title