INFORMATION UPDATE SYSTEM, INFORMATION UPDATE METHOD, AND COMPUTER-READABLE MEDIUM

• US 20080235290A1
• Filed: 03/19/2008
• Published: 09/25/2008
• Est. Priority Date: 03/22/2007
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Murakami, Keigo, Nagasawa, Yoshihiro
• Granted Patent: US 8,346,720 B2
• Time in Patent Office: Days
• US Class Current: 707/200
• CPC Class Codes: H04L 61/4588 containing mobile subscriber information, e.g. home subscriber server [HSS]

Abstract

A system includes a first server apparatus storing information and a plurality of second server apparatuses being connected to the first server apparatus. Each of the plurality of second server apparatuses transmits an update request signal for request to update the information stored in the first server apparatus to the first server apparatus. The first server apparatus selects, when receiving the update request signal, an update scheme corresponding to the update request signal out of a plurality of update schemes. The first server apparatus updates information corresponding to the update request signal with the selected update scheme.

Claims

1. An information update system comprising:

a first server apparatus storing information; and

a plurality of second server apparatuses being connected to the first server apparatus, wherein

each of the plurality of second server apparatuses comprises means for transmitting an update request signal for request to update the information stored in the first server apparatus to the first server apparatus, and

the first server apparatus comprises means for selecting, when receiving the update request signal, an update scheme corresponding to said update request signal out of a plurality of update schemes and updating information corresponding to the update request signal with the selected update scheme.

2. The information update system according to claim 1, wherein

each of the plurality of second server apparatuses adds an identifier for identifying an update scheme to the update request signal to be transmitted to the first server apparatus, and

the first server apparatus selects an update scheme corresponding to the identifier of the update request signal out of the plurality of update schemes.

3. The information update system according to claim 1, wherein

the first server apparatus further comprises means for storing information on combinations of the plurality of second server apparatuses and update schemes associated with the respective plurality of second server apparatuses, and

the first server apparatus selects an update scheme, out of the plurality of update schemes, corresponding to the second server apparatus which has transmitted the update request signal.

4. The information update system according to claim 1, wherein

the first server apparatus further comprises means for detecting a load of communication at the time of receiving the update request signal, and

the first server apparatus selects an update scheme out of the plurality of update schemes according to a result of a comparison of the detected load of communication with a threshold value.

5. The information update system according to claim 1, wherein the plurality of update schemes include:

a first update scheme in which information is updated based on an update request signal having the same identification number whose value is changed every time the first server apparatus updates information; and

a second update scheme in which information is updated based on every update request signal which is received by the first server apparatus.

6. The information update system according to claim 5, wherein when the first server apparatus selects the first update scheme out of the plurality of update schemes, the first server apparatus sends an error signal to the second server apparatus which has transmitted an update request signal having a different identification number from a current identification number.

7. A computer-readable medium carrying a program that causes a computer storing information functions of:

selecting, when receiving an update request signal for request to update the stored information, an update scheme corresponding to said update request signal out of a plurality of update schemes, and

updating information corresponding to the update request signal with the selected update scheme.

8. The computer-readable medium according to claim 7, wherein the program further causes the computer a function of selecting an update scheme corresponding to an identifier included in the update request signal out of the plurality of update schemes.

9. The computer-readable medium according to claim 7, wherein the program further causes the computer functions of:

storing information on combinations of a plurality of apparatuses each transmitting the update request signal and update schemes associated with the respective plurality of apparatuses; and

selecting an update scheme, out of the plurality of update schemes, corresponding to an apparatus which has transmitted the update request signal.

10. The computer-readable medium according to claim 7, wherein the program further causes the computer functions of:

detecting a load of communication at the time of receiving the update request signal; and

selecting an update scheme out of the plurality of update schemes according to a result of a comparison of the detected load of communication with a threshold value.

11. The computer-readable medium according to claim 7, wherein the plurality of update schemes include:

a first update scheme in which information is updated based on an update request signal having the same identification number whose value is changed every time information stored in the computer is updated; and

a second update scheme in which information is updated based on every update request signal which is received by the computer.

12. The computer-readable medium according to claim 11, wherein the program further causes the computer a function of, when selecting the first update scheme out of the plurality of update schemes, sending an error signal to an apparatus which has transmitted an update request signal having a different identification number from a current identification number.

13. An information update method for a system including a first server apparatus that stores information and a plurality of second server apparatuses connected to the first server apparatus, the method comprising:

transmitting an update request signal, from the plurality of second server apparatuses to the first server apparatus, for request to update the information stored in the first server apparatus;

selecting, when the first server apparatus receives the update request signal, an update scheme corresponding to said update request signal out of a plurality of update schemes; and

updating information corresponding to the update request signal with the selected update scheme.

14. The information update method according to claim 13, further comprising:

adding an identifier for identifying an update scheme to the update request signal to be transmitted to the first server apparatus; and

selecting an update scheme corresponding to the identifier of the update request signal, out of the plurality of update schemes, which the first server apparatus has received from the second server apparatus.

15. The information update method according to claim 13, further comprising:

storing information on combinations of the plurality of second server apparatuses and update schemes associated with the respective plurality of second server apparatuses on the first server apparatus, and

selecting an update scheme, out of the plurality of update schemes, corresponding to the second server apparatus which has transmitted the update request signal.

16. The information update method according to claim 13, further comprising:

detecting a load of communication at the time the first server apparatus receives the update request signal, and

selecting an update scheme out of the plurality of update schemes according to a result of a comparison of the detected load of communication with a threshold value.

17. The information update method according to claim 13, wherein the plurality of update schemes include:

a first update scheme in which information is updated based on an update request signal having the same identification number whose value is changed every time the first server apparatus updates information; and

a second update scheme in which information is updated based on every update request signal which is received by the first server apparatus.

18. The information update method according to claim 17, further comprising:

sending an error signal, when the first update scheme is selected out of the plurality of update schemes, to the second server apparatus which has transmitted an update request signal having a different identification number from a current identification number.