GATEWAY LOCATION REGISTER FAULT RECOVERY

Abstract

A gateway location register (GLR) can restore data by sending a reset message to all of the visitor location registers (VLR) associated with the GLR. Alternatively the data in the GLR can be restored when a request for a roaming number is sent to the GLR from a home location register (HLR). In any case the location information is restored from the VLR and the subscriber profile from the HLR. If the GLR has a backup memory the GLR can forward a request for a roaming number to a VLR which is indicated by the backup memory as serving the mobile subscriber associated with the roaming number request received from the HLR. If the information contained in the backup memory is incorrect the GLR can send a request to restore data to all VLRs associated with the GLR. Further the GLR upon receipt of a roaming number request for a subscriber whose serving VLR is unknown the GLR can send an error indication to the HLR and wait for a location update from a serving VLR. In addition if the backup data is incorrect or non-existent the GLR can send a request for a roaming number to all its associated VLRs which have not yet received the request.

A gateway location register (GLR) can restore data by sending a reset message to all of the visitor location registers (VLR) associated with the GLR. Alternatively the data in the GLR can be restored when a request for a roaming number is sent to the GLR from a home location register (HLR). In any case the location information is restored from the VLR and the subscriber profile from the HLR. If the GLR has a backup memory the GLR can forward a request for a roaming number to a VLR which is indicated by the backup memory as serving the mobile subscriber associated with the roaming number request received from the HLR. If the information contained in the backup memory is incorrect the GLR can send a request to restore data to all VLRs associated with the GLR. Further the GLR upon receipt of a roaming number request for a subscriber whose serving VLR is unknown the GLR can send an error indication to the HLR and wait for a location update from a serving VLR. In addition if the backup data is incorrect or non-existent the GLR can send a request for a roaming number to all its associated VLRs which have not yet received the request.

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Technology	Declaration Information			Specification Information	Explicitly Disclosed	Patent Type
Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Number	Explicitly Disclosed	Patent Type
Not Available	23/05/2002	ISLD-200205-001	ERICSSON INC	S1 TS Number: Not Available Version No: Illustrative part: ---- Release: + -	No	Family Member
4G,3G	08/03/2009	ISLD-200903-002	ERICSSON INC	S1 TS Number: TS 123 119 v6.0.0 Version No: v6.0.0 Illustrative part: 7.6.1 Release: 6 + -	No	Family Member

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Publication No	Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Number	Explicitly Disclosed	Patent Type
BR0009742A	Not Available	23/05/2002	ISLD-200205-001	ERICSSON INC	S1 TS Number: Not Available Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
BR0009742A	4G,3G	08/03/2009	ISLD-200903-002	ERICSSON INC	S1 TS Number: TS 123 119 v6.0.0 Version No: v6.0.0 Section No: ---- Release : 6 + -	No	Family Member
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BR0009743A	4G,3G	08/03/2009	ISLD-200903-002	ERICSSON INC	S1 TS Number: TS 123 119 v6.0.0 Version No: v6.0.0 Section No: ---- Release : 6 + -	No	Family Member
BR0009751A	Not Available	23/05/2002	ISLD-200205-001	ERICSSON INC	S1 TS Number: Not Available Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
BR0009751A	4G,3G	08/03/2009	ISLD-200903-002	ERICSSON INC	S1 TS Number: TS 123 119 v6.0.0 Version No: v6.0.0 Section No: ---- Release : 6 + -	No	Family Member
BR0009754A	Not Available	23/05/2002	ISLD-200205-001	ERICSSON INC	S1 TS Number: Not Available Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
BR0009754A	4G,3G	08/03/2009	ISLD-200903-002	ERICSSON INC	S1 TS Number: TS 123 119 v6.0.0 Version No: v6.0.0 Section No: ---- Release : 6 + -	No	Family Member
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EP1183890A2	4G,3G	08/03/2009	ISLD-200903-002	ERICSSON INC	S1 TS Number: TS 123 119 v6.0.0 Version No: v6.0.0 Section No: ---- Release : 6 + -	No	Family Member
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Publication No	Technology	Declaration Information			Specification Information				Explicitly Disclosed	Patent Type	Status	National Phase Entries
Publication No	Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Information				Explicitly Disclosed	Patent Type	Status	National Phase Entries
-----	-----	-----	-----	-----	S1 TS Number: ----- Version No: ----- Section No:----- Release:----- + -				-----	-----	-----	-----

Technologies

Radio air Interface

Network Management and Planning

Product

Mobility Switching Centre (MSC)

Visitor Location Register (VLR)

Use Cases

Wireless communication

Services

Secure Communication

Claim

1. In a radio communications network which includes a visitor location register and a gateway location register, a method for recovering from a fault comprising the steps of: sending, from the gateway location register, a reset message to all visitor location registers associated with the gateway location register; receiving, by the gateway location register, a location update request from one of the visitor location registers associated with the gateway location register; updating, in the gateway location register, a location of a mobile subscriber in accordance with a location indicated in the location update message.

2. The method of claim 1 , wherein the reset message is a MAP RESET message.

3. The method of claim 1 , wherein the location update request is a MAP UPDATE LOCATION request.

4. The method of claim1. wherein the radio communications network operates according to the UMTS protocol.

5. In a radio communications network which includes a visitor location register and a gateway location register, a method for recovering from a fault comprising the steps of: receiving, by the gateway location register, a roaming number request for a mobile subscriber from a home location register associated with the mobile subscriber; forwarding the roaming number request from the gateway location register to all visitor location registers associated with the gateway location register: and receiving, by the gateway location register, a roaming number from a visitor location register which is serving the mobile subscriber.

6. The method of claim 5, wherein the roaming number request is a MAP PROVIDE ROAMING NUMBER indication message.

7. The method of claim 5, wherein the roaming number received from the visitor location register which is serving the mobile subscriber is contained in a MAP PROVIDE ROAMING NUMBER response message.

8. The method of claim 5, further comprising the steps of: receiving, by the gateway location register, a restore data request message from visitor location registers which are not serving the mobile subscriber; and sending, from the gateway location register, a restore data response message to the visitor location registers which are not serving the mobile subscriber, the restore data response message contains an error indication.

9. The method of claim 8, wherein the restore data request message is a MAP RESTORE DATA indication message

10. The method of claim 8, wherein the restore data response message is a MAP RESTORE DATA response message

11. In a radio communications network which includes a visitor location register and a gateway location register, a method for recovering from a fault comprising the steps of: loading, in the gateway location register, data from a backup memory; receiving, by the gateway location register, a roaming number request for a mobile subscriber from a home location register associated with the mobile subscriber; and forwarding the roaming number request from the gateway location register to a visitor location register, wherein the data loaded from the backup memory indicates that the visitor location register is serving the mobile subscriber

12. The method of claim 11 , wherein the roaming number request is a MAP PROVIDE ROAMING NUMBER indication message

13. The method of claim 11, further comprising the steps of: receiving, by the gateway location register, a roaming number from the visitor location register which is serving the mobile subscriber; forwarding, by the gateway location register, the roaming number to the home location associated with the mobile subscriber

14. The method of claim 13, wherein the roaming number is received and forwarded in a MAP PROVIDE ROAMING NUMBER response message

15. The method of claim 11, further comprising the steps of: receiving, by the gateway location register, a message indicating that the mobile subscriber is not being served by the visitor location register; and sending, by the gateway location register, a reset message to all visitor location registers associated with the gateway location register other than the visitor location register from which the gateway location register received the message indicating that the mobile subscriber is not being served

16. In a radio communications network which includes a visitor location register and a gateway location register, a method for recovering from a fault comprising the steps of: sending, from the gateway location register, a reset message to all visitor location registers associated with the gateway location register; and waiting, by the gateway location register, for a location update message from a visitor location register which indicates that the subscriber indicated in the location update message is being served by the visitor location register

17. The method of claim 16, wherein the location update message is a MAP UPDATE LOCATION message

18. The method of claim 16 further comprising the step of: receiving, by the gateway location register from a home location register, a roaming number request for a mobile subscriber associated with the home location register; and sending a roaming number response message from the gateway location register to the home location register, wherein the roaming number response message includes an error indication

19. The method of claim 18, wherein the roaming number request message is a MAP PROVIDE ROAMING NUMBER request message.

20. The method of claim 18, wherein the roaming number response message is a MAP PROVIDE ROAMING NUMBER response message.']

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