Automated transitioning between different communication protocols in a network

Patent metadata

Field	Value
Publication number	US-10015092-B2
Application number	US-201414499202-A
Country	US
Kind code	B2
Filing date	Sep 28, 2014
Priority date	Feb 19, 2011
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

One embodiment includes, inter alia, methods, apparatus, computer-storage media, mechanisms, and/or means associated with automated transitioning between different communication protocols in a network. In one embodiment, automatic transition routers are automatically discovered along with the knowledge of what non-native protocols need to be transported across a network. Communication pathways are automatically established as needed to transport these non-native protocols. One embodiment is particularly useful in transitioning a network from one protocol to another, such as from Internet Protocol version 4 to version 6.

First claim

What is claimed is:

1. An apparatus, comprising:
one or more processing elements communicatively coupled with memory;
a plurality of interfaces sending and receiving packets; and
one or more packet switching mechanisms packet switching packets among said interfaces;
wherein said one or more processing elements perform operations, including:
discovering, based on information exchanged with one or more other routers in a network using a routing protocol, an automatic transition router in the network and an identification that the automatic transition router is communicatively coupled to a non-native protocol island;
in response said discovering of the automatic transition router and that the automatic transition router is communicatively coupled to a non-native protocol island: automatically determining, based on a routing database including routing information for a natively-supported Internet Protocol, one or more paths to the automatic transition router in the network using the natively-supported Internet Protocol in the network;
automatically establishing a communication pathway to the automatic transition router in response to said determination of said one or more paths to the automatic transition router, with the apparatus communicating packets of a second Internet Protocol, different from the natively-supported Internet Protocol, over the communication pathway between the apparatus and the automatic transition router;
determining, based on the routing database including routing information for the second Internet Protocol, one or more second paths to the automatic transition router in the second Internet Protocol network using the second Internet Protocol in the network;
in response to said determination of said one or more second paths to the automatic transition router: establishing a second communication pathway with the automatic transition router through the second Internet Protocol network; and
communicating packets of the natively-supported Internet Protocol over the second communication pathway with the automatic transition router.

2. The apparatus of claim 1 , wherein the routing protocol is Interior Gateway Routing Protocol.

3. The apparatus of claim 1 , wherein the routing protocol is Open Shortest Path First.

4. The apparatus of claim 1 , wherein the routing protocol is Intermediate System-to-Intermediate System.

5. An evolved NodeB (eNB) for transmitting signals in a Licensed-Assisted Access (LAA) serving cell, comprising:
a processor; and
a memory in electronic communication with the processor, wherein instructions stored in the memory are executable by the processor to:
configure one or more unlicensed LAA cell from a licensed long term evolution (LTE) cell;
determine sizes for at least one of a minimum clear channel assessment (MCCA) slot, an initial clear channel assessment (ICCA) slot and a defer period,
wherein the MCCA slot is synchronized and has a size that is a fraction of an orthogonal frequency division multiplexing (OFDM) symbol length, and lengths of the ICCA slot and defer period are multiples of a length of the MCCA slot,
wherein the length of the MCCA slot is ⅛ of a Long Term Evolution (LTE) OFDM symbol, and the length of the ICCA slot is ½ of an LTE OFDM symbol;
determine a slot structure with a baseline MCCA slot of an unlicensed LAA cell;
align and adjust a length of at least one of the ICCA slot and the defer period of the LAA cell based on the baseline MCCA slot; and
synchronize and align baseline MCCA slots of multiple LAA cells managed by the eNB.

6. A method, comprising:
discovering, by a first automatic transition router based on information exchanged with one or more other routers in a network using a routing protocol, a second automatic transition router in the network and an identification that the second automatic transition router is communicatively coupled to a non-native protocol island;
in response to said discovering of the second automatic transition router and that the second automatic transition router is communicatively coupled to a non-native protocol island: determining, by the first automatic transition router based on the routing database including routing information for a natively-supported Internet Protocol, one or more paths to the second automatic transition router in the network using the natively-supported Internet Protocol in the network;
in response to said determination of said one or more paths to the second automatic transition router: automatically establishing a communication pathway between the first automatic transition router and the second automatic transition router;
communicating packets of a second Internet Protocol, different from the natively-supported Internet Protocol, over the communication pathway between the first automatic transition router and the second automatic transition router;
determining, by the first automatic transition router based on the routing database including routing information for the second Internet Protocol, one or more second paths to the second automatic transition router in a second Internet Protocol network using the second Internet Protocol in the network;
in response to said determination of said one or more second paths to the second automatic transition router: establishing a second communication pathway between the first automatic transition router and the second automatic transition router through the second Internet Protocol network; and
communicating packets of the natively-supported Internet Protocol over the second communication pathway between the first automatic transition router and the second automatic transition router.

7. The method of claim 6 , wherein the routing protocol is Border Gateway Protocol or Intermediate System-to-Intermediate System.

8. The method of claim 6 , including: in response to the first automatic transition router and the second automatic transition router being able to communicate over the second Internet Protocol network, automatically switching to communicating packets of the second Internet Protocol over the second Internet Protocol network between the first automatic transition router and the second automatic transition router from said communicating packets of the second Internet Protocol over the communication pathway between the first automatic transition router and the second automatic transition router.

9. The method of claim 6 , including removing the communication pathway between the first automatic transition router and the second automatic transition router.

10. The method of claim 6 , including automatically removing the second communication pathway between the first automatic transition router and the second automatic transition router in response to determining that there are no natively-supported Internet Protocol islands attached to each of the first automatic transition router and the second automatic transition router.

11. The method of claim 6 , wherein the natively-supported Internet Protocol is Internet Protocol version 6 (IPv6).

12. The method of claim 6 , wherein the natively-supported Internet Protocol is Internet Protocol version 4 (IPv4), and the second Internet Protocol is Internet Protocol version 6 (IPv6).

13. The method of claim 12 , wherein the communication pathway between the first automatic transition router and the second automatic transition router is a tunnel.

14. The method of claim 6 , wherein the natively-supported Internet Protocol is Internet Protocol version 6 (IPv6).

15. The apparatus of claim 1 , wherein the routing protocol is Border Gateway Protocol.

16. The method of claim

Assignees

• Troan Ole
• Townsley William Mark
• Van De Velde Gunter
• Dec Wojciech
• Cisco Tech Inc

Inventors

• Troan Ole
• Townsley William Mark
• Van De Velde Gunter
• Dec Wojciech

Classifications

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04L1/0618

  Space-time coding · CPC title

• H04W56/0045

  compensating for timing error by altering transmission time · CPC title

• H04W88/02

  Terminal devices · CPC title

• H04L12/189

  in combination with wireless systems (selective distribution or broadcast in wireless communication networks H04W4/06) · CPC title