Systems and methods for network slicing

Patent metadata

Field	Value
Publication number	US-11516113-B2
Application number	US-201916359275-A
Country	US
Kind code	B2
Filing date	Mar 20, 2019
Priority date	Mar 20, 2018
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

Embodiments disclosed herein relate to systems and methods for network slicers. Network slicers can receive creation request messages and select network slices based on policies. A network slicer can indicate to next hop routers that it has lower routing costs in order to receive messages, and inspect the received messages to identify creation request messages. A network slicer can indicate to a DNS server that it has a higher priority than other network elements, and receive creation request messages based on the higher priority. New creation request messages can be sent to the selected network slices based on received creation request messages. The network can also create and send appropriate response messages to the creation request to establish future communications with the selected network slice.

First claim

What is claimed is:

1. A method comprising:
receiving, at a network slicer in a networked system, a first message from a first network node of the networked system;
determining, by the network slicer, a first destination address from the first message, the first destination address corresponding to a first network slice node that is part of a first network slice comprising a first plurality of network elements;
determining, by the network slicer, that the first message is a creation request message;
determining a destination type from the first message;
identifying, by the network slicer, based on one or more of a policy of the network slicer or an external policy, a second network slice node of the networked system having the destination type, wherein the second network slice node is part of a second network slice that is different from the first network slice, the second network slice comprising a second plurality of network elements;
creating, by the network slicer, a new creation request message, wherein a source address of the new creation request message is a network slicer address, and wherein a destination address of the new creation request message is an address of the second network slice node that is part of the second network slice; and
transmitting the new creation request message from the network slicer to the second network slice node.

2. The method of claim 1 , wherein the first network node is one or more of a mobility management entity (MME), a serving general packet radio services (GPRS) support node (SGSN), serving gateway (SGW), enhanced packet data gateway (ePDG), or a trusted WLAN.

3. The method of claim 1 , wherein the determined destination type comprises a gateway general packet radio services (GPRS) support node (GGSN), a serving gateway (SGW), or a packet data network gateway (PGW).

4. The method of claim 1 , wherein identifying the second network slice node comprises:
determining, by the network slicer, one or more of a throughput capability level of a user equipment (UE) associated with the first message, an enterprise associated with the UE associated with the first message, a traffic speed of the UE associated with the first message, a security level or requirement of the UE associated with the first message, or an employee status of an owner of the UE associated with the first message, and
selecting, by the network slicer, the destination address associated with one or more of a capability level of the UE, an enterprise of the UE, the traffic speed of the UE, the security level or requirement of the UE, or the employee status of the owner of the UE from a plurality of destination addresses.

5. The method of claim 1 , wherein identifying the second network slice node comprises determining one or more of an International Mobile Subscriber Identity (IMSI) of a user equipment associated with the first message, location of the user equipment associated with the first message, access point name (APN) associated with the first message, an International Mobile Equipment Identity (IMEI) identification number of the user equipment associated with the first message, a Radio Access Technology type associated with the first message, or a timestamp of the first message.

6. The method of claim 1 , further comprising:
receiving, by the network slicer, a response message from the second network slice node; and
creating, by the network slicer, a new response message including:
the first destination address corresponding to the first network slice node as the source address of the new response message, and
message content from the response message sent by the second network slice node.

7. The method of claim 6 , further comprising:
storing, at the network slicer, one or more of an address associated with the first network node or the destination address prior to the receiving the response message from the second network slice node; and
deleting, by the network slicer, at least one address associated with the first network node or the destination address after the new response message is created.

8. The method of claim 1 , further comprising indicating to a next hop router by the network slicer that a router associated with the network slicer has a lower routing cost to a third network node than an expected routing cost from other routers in the networked system to the third network node prior to the receiving the first message, wherein the lower routing cost to the third network node is lower than an actual routing cost to the third network node.

9. A method comprising:
receiving, at a network slicer in a networked system, a creation request message from a first network node, the creation request message having as a first destination address an address associated with the network slicer;
determining a destination type from the creation request message;
selecting, by the network slicer, a second destination address for the creation request message based on one or more of a policy of the network slicer or an external policy, the second destination address being associated with a second network slice node of the networked system having the destination type, wherein the second network slice node is part of a network slice comprising a plurality of network elements;
creating, by the network slicer, a new creation request message including message content from the creation request message, wherein a source address of the new creation request message is a network slicer address, and wherein a destination address of the new creation request message is the second destination address associated with the second network slice node that is part of the network slice; and
transmitting the new creation request message from the network slicer to the second network slice node of the networked system associated with the second destination address.

10. The method of claim 9 , further comprising:
receiving, by the network slicer, a response message from the second network slice node; and
creating, by the network slicer, a new response message, wherein a source address of the new response message is the network slicer address, wherein a destination address of the new response message is an address of the first network node, and wherein the new response message comprises message content from the response message sent by the second network slice node.

11. The method of claim 10 , further comprising:
storing, at the network slicer, one or more of the address associated with the first network node or the second destination address prior to the receiving the response message from the second network slice node; and
deleting, by the network slicer, the stored one or more of the address associated with the first network node or the second destination address after the creating the new response message.

12. The method of claim 9 , wherein the first network node is one or more of a mobility management entity (MME), a serving general packet radio services (GPRS) support node (SGSN), serving gateway (SGW), enhanced packet data gateway (ePDG), or a trusted WLAN.

13. The method of claim 9 , wherein the determined destination type comprises a gateway general packet radio services (GPRS) support node (GGSN), a serving gateway (SGW), or a packet data network gateway (PGW).

14. The method of claim 9 , wherein the selecting the second destination address for the creation request message based on the one or more of the policy of the network slicer or the external policy comprises:
determining, by the network slicer, one or more of a throughput capability level of a user equipment (UE) associated with the creation request message, an enterp

Assignees

• Affirmed Networks Inc
• Microsoft Technology Licensing Llc

Inventors

• Qian Haibo
• Muralidharan Srinivasan
• Nickell Kenton Perry
• Parker Ronald M
• Rink Fred

Classifications

• H04L45/24 Primary

  Multipath · CPC title

• H04L45/74 Primary

  Address processing for routing · CPC title

• H04L47/20

  Traffic policing · CPC title

• H04L45/12 Primary

  Shortest path evaluation · CPC title