Data center relocation methods and apparatus

• US 9,578,567 B1
• Filed: 08/26/2014
• Issued: 02/21/2017
• Est. Priority Date: 08/26/2014
• Status: Expired due to Fees

• Current Assignee: Luminate Wireless, Inc.
• Original Assignee: Luminate Wireless, Inc.
• Inventors: Laganier, Julien, Yu, Kevin
• Primary Examiner(s): Kading, Joshua
• Application Number:
  US14/469,562
• Time in Patent Office: 910 Days
• US Class Current: 1/1
• CPC Class Codes: H04L 41/0668 by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
• CPC Class Codes: H04L 45/28 using route fault recovery
• CPC Class Codes: H04W 24/04 Arrangements for maintaining operational condition
• CPC Class Codes: H04W 36/0007 for multicast or broadcast services, e.g. MBMS multicast or broadcast application services H04W4/06; resource management for broadcast services H04W72/30; connection management for selective distribution or broadcast H04W76/40
• CPC Class Codes: H04W 36/0022 for transferring data sessions between adjacent core network technologies
• CPC Class Codes: H04W 36/0027 for a plurality of data sessions of end-to-end connections, e.g. multi-call or multi-bearer end-to-end data connections
• CPC Class Codes: H04W 36/24 Reselection being triggered by specific parameters
• CPC Class Codes: H04W 76/22 Manipulation of transport tunnels
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

Methods and apparatus for supporting a data center relocation with regard to an access point are described. A primary gateway connection is established between the access point and a primary gateway in a first data center, and a secondary gateway connection is established between the access point and a secondary gateway in a second data center. A path switch request is sent via the secondary gateway connection. A DNS server sends an IP address corresponding to the second data center. The data center for the access point is switched from the first data center to the second data center. In some embodiments, the transition from the first data center to the second data center is in response to a detected communications failure. In other embodiments, the transition from the first data center to the second data center is due to scheduled maintenance.

Claims

1. A communications method, the method comprising:

establishing a primary gateway connection between an access point and a primary gateway;

establishing a connection for a user equipment (UE) device to said access point, said established connection being between said UE device and said access point; and

transmitting a path switch request via a secondary gateway connection between said access point and a secondary gateway, to a network entity which is a mobility management entity (MME) for processing of the path switch request message which is for said UE device connected to said access point while said UE device remains connected to said access point.

2. The method of claim 1, wherein said path switch request is a request to update data and signaling paths corresponding to the UE device to move the control signaling path and the data signaling path from the primary gateway connection to the secondary gateway connection.

3. The method of claim 2,

wherein the first gateway is located at a first data center and the second gateway is located at a second data center;

and

wherein the updating of the data and signaling paths by the path switch request message moves the control signaling path and the data signaling path from the first data center at which the first gateway is located to the second data center at which the second gateway is located.

4. The method of claim 2, wherein said move of the control signaling path and the data signaling path from the primary gateway connection to the secondary gateway connection is transparent to the UE.

5. The method of claim 1, wherein said path switch request is an LTE S1AP Path Switch Request.

6. The method of claim 1, wherein the UE device is connected to one cell of said access point prior to and subsequent to said path switch request.

7. The method of claim 1, further comprising:

transmitting a context release request for said UE device to the primary gateway following transmission of said path switch request.

8. The method of claim 1, further comprising:

detecting, at said access point or a management device, a primary gateway communication failure; and

wherein said path switch request is sent via the secondary gateway connection in response to detecting the primary gateway communication failure.

9. The method of claim 8,

wherein the primary gateway is located in a first data center;

the method further comprising;

receiving at a DNS server a request to resolve a name corresponding to a tracking area identifier corresponding to the area in which the access point is located; and

responding to said request to resolve the name with an IP address or a domain name and an IP address, corresponding to a second data center which is different from said first data center.

10. The method of claim 9, further comprising:

receiving, at the access point, a response to the path switch request from the network entity via the secondary gateway connection.

11. The method of claim 1,

wherein the primary gateway is located in a first data center;

the method further comprising;

operating the management device to communicate a dynamic DNS update for a tracking area identifier corresponding to a location of the access point, said dynamic DNS update including an IP address or a domain name corresponding to a second data center which is different from first data center.

12. The method of claim 1, further comprising:

establishing the secondary gateway connection between the access point and the primary gateway; and

wherein said steps of establishing the primary gateway connection and establishing the secondary gateway connection are performed prior to establishing the connection for the user equipment (UE) device to said access point.

13. The method of claim 1 wherein the mobility management entity is an LTE MME.

14. A communications method, the method comprising:

establishing a primary gateway connection between an access point and a primary gateway, said primary gateway being a first HeNB gateway and said access point being an LTE HeNB;

establishing a connection for a user equipment (UE) device to said access point, said established connection being between said UE device and said access point; and

transmitting a path switch request via a secondary gateway connection between said access point and a secondary gateway which is a second HeNB gateway, to a network entity, for said UE device connected to said access point while said UE device remains connected to said access point.

15. The method of claim 14, wherein said network entity is a mobility management entity (MME).

16. A communications system comprising:

an access point comprising;

a module configured to establish a primary gateway connection between an access point and a primary gateway;

a module configured to establish a connection for a user equipment (UE) device to said access point, said established connection being between said UE device and said access point;

a transmitter; and

a module configured to control the transmitter to transmit a path switch request via a secondary gateway connection between said access point and a secondary gateway, to a network entity which is a mobility management entity (MME) for processing of the path switch request message for said UE device connected to said access point while said UE device remains connected to said access point.

17. The communications system of claim 16, wherein said path switch request is a request to update data and signaling paths corresponding to the UE device to move the control signaling path and the data signaling path from the primary gateway connection to the secondary gateway connection.

18. The communications system of claim 16, wherein said path switch request is an LTE S1AP Path Switch Request.

19. The communications system of claim 16, wherein the UE device is connected to one cell of said access point prior to and subsequent to said path switch request.

20. The communications system of claim 16, wherein said access point further comprises:

a module configured to control the transmitter to transmit a context release request for said UE device to the primary gateway following transmission of said path switch request.

21. The communications system of claim 16, wherein said access point further comprises:

a module configured to detect a primary gateway communication failure; and

wherein said module configured to control the transmitter to transmit a path switch request is further configured to control the transmitter to transmit the path switch request in response to detecting the primary gateway communication failure.

22. The communications system of claim 21,

wherein the primary gateway is located in a first data center;

and

wherein the communications system further comprises;

a DNS server comprising;

a module configured to receive a request to resolve a name corresponding to a tracking area identifier corresponding to the area in which the access point is located; and

a module configured to respond to said request to resolve the name with an IP address or a domain name and an IP address corresponding to a second data center which is different from said first data center.

23. The communications system of claim 22, wherein said access point further comprises:

a module configured to receive, at the access point, a response to the path switch request from the network entity via the secondary gateway connection.

24. The communications system of claim 16,

wherein the primary gateway is located in a first data center;

and

wherein said communications system further comprises;

a management device comprising;

a module configured to operate the management device to communicate a dynamic DNS update for a tracking area identifier corresponding to a location of the access point, said dynamic DNS update including an IP address or a domain name corresponding to a second data center which is different from first data center.

25. The system of claim 16 wherein the mobility management entity is an LTE MME.

26. A communications system comprising:

an access point, said access point being an LTE HeNB comprising;

a module configured to establish a primary gateway connection between the access point and a primary gateway, said primary gateway being a first HeNB gateway;

a module configured to establish a connection for a user equipment (UE) device to said access point, said established connection being between said UE device and said access point;

a transmitter; and

a module configured to control the transmitter to transmit a path switch request via a secondary gateway connection between said access point and a secondary gateway which is a second HeNB gateway, to a network entity for said UE device connected to said access point while said UE device remains connected to said access point.