Method for restoring lost databases by comparing existing database and generic database, and generating cellular switch commands to update the generic database

• US 5,274,802 A
• Filed: 02/22/1991
• Issued: 12/28/1993
• Est. Priority Date: 02/22/1991
• Status: Expired due to Term

• Current Assignee: GTE Mobilnet Incorporated (Verizon Communications Inc.)
• Original Assignee: GTE Mobilnet Incorporated (Verizon Communications Inc.)
• Inventors: Altine, Phillip
• Primary Examiner(s): Lee, Thomas C.
• Assistant Examiner(s): LINTZ, PAUL R
• Application Number:
  US07/659,192
• Time in Patent Office: 1,040 Days
• Field of Search: 364/DIG. 1, 364/DIG 2, 395/600, 395/575, 379/59, 379/60, 371/7, 371/8.1, 455/33.1, 455/33.2
• US Class Current: 455/560
• CPC Class Codes: G06F 11/1441 Resetting or repowering
• CPC Class Codes: G06F 2201/80 Database-specific techniques
• CPC Class Codes: H04W 8/30 Network data restoration; Network data reliability; Network data fault tolerance
• CPC Class Codes: H04W 88/14 Backbone network devices
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

An improved method is disclosed for automatically updating databases contained in the random access memory and tape storage of a cellular switch. First, instructions are issued to a cellular switch, causing the switch to provide a first output of one or more operative databases contained in the random access memory of the switch. Then, one or more backup databases are loaded into the random access memory of the switch, and instructions are issued to the switch causing the switch to provide a second output of the backup databases. The first and second outputs are then analyzed by a computer program, and in response to the analysis the program automatically assembles a number of cellular switch compatible software commands into a text file. Finally the text file is transmitted to the switch, thereby updating databases contained in the random access memory and the tape storage of the switch.

Claims

1. A computer implemented method for reconstructing lost data on a cellular switch database and a system generic tape for the cellular switch whereby the reconstructed data of a backup system generic tape can be used to operate the cellular switch, the cellular switch having a primary random access memory and secondary random access memory wherein said primary random access memory and said secondary random access memory having identical information, comprising the computer implemented steps of:

(a) reading an existing switch database stored in said primary random access memory into an external computer,

(b) placing the existing switch database stored in said primary memory in a standby mode on the cellular switch,

(c) placing the existing system generic tape on a cellular switch in a standby mode,

(d) moving into the cellular switch a copy of the backup system generic tape whereby said backup copy becomes a primary switch database stored in the primary random access memory and said backup system generic tape becomes a current system generic tape,

(e) reading from the primary random access memory into the external computer a copy of the backup system generic tape contents,

(f) comparing in the external computer the existing switch database originally stored in the primary random memory and the contents of the backup system generic tape to identify any differences therebetween,

(g) converting any such differences into switch commands,

(h) transmitting and verifying each of the switch commands from the external computer to the primary switch database stored in the primary random access memory and the current system generic tape, and

(i) overwriting the contents in the secondary random access memory of the cellular switch with the contents in the primary memory of the cellular switch.

2. The method of claim 1, wherein the comparing step comprises:

(a) reading a subscriber file access tree from the primary random access memory of the cellular switch into the external computer, said subscriber file access tree containing one or more mobile telephone numbers,

(b) interpreting in the external computer the subscriber file access tree in order to identify the mobile telephone numbers that have been allocated for use, and

(c) comparing in the external computer for each said allocated mobile telephone number, a first database record corresponding to the allocated mobile telephone number with a second database record corresponding to the allocated mobile telephone number.

3. The method of claim 2, wherein the converting step comprises:

(a) writing, for each said assigned mobile telephone number to which different first and second database records correspond, an instruction such as add, delete, or change command to a text file, said instruction being compatible with the switch.