Method and device for managing status/alarm message of GPS receiver and broadcasting system time

• US 5,973,640 A
• Filed: 10/24/1997
• Issued: 10/26/1999
• Est. Priority Date: 01/17/1997
• Status: Expired due to Term

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Keun-Ju
• Primary Examiner(s): Hellner, Mark
• Application Number:
  US08/957,114
• Time in Patent Office: 732 Days
• Field of Search: 342/357, 342/357.1, 701/213, 370/338, 455/507
• US Class Current: 342/357.21
• CPC Class Codes: G01S 19/23 Testing, monitoring, correcting or calibrating of receiver elements
• CPC Class Codes: G04G 7/02 by radio

Abstract

Apparatus and methods for managing a detailed status message and alarm message of a global positioning system (GPS) receiver and broadcasting an accurate system time. The GPS receiver receives current time and positional information from a global positioning system satellite, to generate clocks to respective blocks in a base station and to generate self status and alarm message data and system time message data. A base station control processor receives the status and alarm message data and system time message data, and separates the system time therefrom to immediately broadcast the system time to processors of the base station. The base station control processor also periodically checks for a change of the status and alarm message in the system time message data to report the change of the status and alarm message to a base station control device.

Claims

1. A method for managing a status and an alarm message of a global positioning system receiver and broadcasting a system time to a base station control processor, comprising the steps of:

receiving status and alarm management message data, system time message data, and verification message data from the global positioning system receiver;

verifying whether the received status and alarm management message data and system time message data are correct by checking the verification message data;

separating system time information from said system time message data if said system time message data is correct; and

checking for a change of the status and alarm message in the system time message data.

2. The method of claim 1, further comprising the steps of:

broadcasting the system time to base station control processors; and

reporting any change of the status and alarm message to a base station controller.

3. The method of claim 1, wherein said system time is in units of seconds.

4. The method of claim 1, wherein said base station control processor is a dual base station control processor.

5. A method for managing a status and an alarm message of a global positioning system receiver and broadcasting a system time to a base station control processor, comprising the steps of:

receiving message data of said global positioning system receiver, including system time information, message data verification information, and the status and alarm message;

verifying whether the received message data is correct by checking the message data verification information;

separating the system time from said message data if the received message data is correct;

broadcasting the system time to base station control processors; and

determining changes of the status and alarm message in the message data.

6. The method of claim 5, further comprising the step of reporting determined changes to a base station controller.

7. The method of claim 5, wherein said system time is broadcasted immediately after being separated from said message data.

8. The method of claim 5, wherein said system time is broadcasted in response to an interrupt from said global positioning system receiver.

9. The method of claim 5, wherein said checking step is performed periodically.

10. The method of claim 5, wherein said separating and broadcasting steps are performed by said base station controller.

11. The method of claim 5, wherein said global positioning system receiver generates and distributes clocks.

12. The method of claim 5, wherein said base station control processor is a dual base station control processor.

13. An apparatus for managing a status message and an alarm message of a global positioning system receiver and broadcasting a system time to a base station control processor, comprising:

means for receiving message data of said global positioning system receiver, said message data including system time information, message data verification information, and said status message and said alarm message;

means for verifying whether the received message data is correct by checking the message data verification information;

means for separating the system time from said message data to broadcast the system time to processors in a base station if the received message data is correct;

means for broadcasting the system time to said processors; and

means for determining if said status message and said alarm message in the message data have changed.

14. The apparatus of claim 13, further comprising means for reporting determined changes to a base station controller.

15. The apparatus of claim 13, wherein said base station control processor is a dual base station control processor.

16. An apparatus for managing a status message and an alarm message of a global positioning system receiver and broadcasting a system time, comprising:

said global positioning system receiver receiving current time and positional information from a global positioning system satellite, and generating clocks to respective blocks in a base station and generating self status and alarm management message data and system time message data; and

a base station control processor for receiving system time message data including status and alarm management message data, and for separating system time information therefrom to immediately broadcast the system time information to processors of the base station, said base station control processor determining changes of the status and alarm message in the system time message data, and reporting any changes to a base station control device.

17. The apparatus of claim 16, wherein said global positioning system receiver generates the status and alarm management message data and the system time message data every 2 seconds.