Method and apparatus for using advanced positioning systems in cellular communication networks

• US 6,400,943 B1
• Filed: 07/09/1999
• Issued: 06/04/2002
• Est. Priority Date: 02/03/1997
• Status: Expired due to Term

• Current Assignee: Hanger Solutions, LLC (IP Investments Group LLC)
• Original Assignee: Nortel Networks Limited (Nortel Networks Corporation)
• Inventors: Montoya, Alexander John
• Primary Examiner(s): Trost, William
• Assistant Examiner(s): Ferguson, Keith
• Application Number:
  US09/350,508
• Time in Patent Office: 1,061 Days
• Field of Search: 455/426, 455/423, 455/424, 455/425, 455/403, 455/432, 455/433, 455/434, 455/435, 455/436, 455/437, 455/438, 455/422, 455/456, 455/404, 455/567, 455/458, 455/67.1, 455/67.4, 455/412, 455/457, 455/517, 342/357.01, 342/357.02, 342/357.07
• US Class Current: 455/456.5
• CPC Class Codes: G01S 19/42 Determining position
• CPC Class Codes: G01S 2205/002 for traffic control, mobile tracking, guidance, surveillance or anti-collision
• CPC Class Codes: G01S 2205/008 using a mobile telephone network
• CPC Class Codes: G01S 5/0027 of actual mobile position, i.e. position determined on mobile
• CPC Class Codes: H04B 7/18552 using a telephonic control signal and a second ranging satellite determining absolute distances from a plurality of spaced points of known location G01S5/14
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Abstract

A system and method that uses an advanced positioning system in combination with a cellular communication network to improve the performance of the network is disclosed One embodiment of the network includes a mobile switching center (MSC), a location tracker system (LTS), and a plurality of base stations for serving at least one mobile unit in the network. The LTS is able to receive a location code from the mobile unit that represents a specific coordinate, or location, in the network. The mobile unit may have generated the location code by analyzing its position from a global positioning satellite, or by other means. The LTS stores the location code in a data base. Whenever the MSC needs to communicate with the mobile unit, it queries the database of the LTS to determine the last location of the mobile unit. The MSC then selects one of the base stations that serves the location of the mobile unit and establishes a cellular link therethrough.

Claims

1. A method of performing self-engineering in a cellular communication network, the method comprising the steps of receiving a signal indicating a location of a mobile unit, selecting a base station that serves the indicated location, transmitting a code to the mobile unit from the selected base station, and updating an error log according to the mobile unit'"'"'s response, if any, to the code.

2. The method of claim 1 further comprising using the updated error log to self-engineer the cellular communication network.

3. The method of claim 2 wherein the step of receiving comprises receiving a first identifier code that identifies the mobile unit.

4. The method of claim 3 further comprising storing the indicated location and the first identifier code in a database.

5. The method of claim 4 further comprising analyzing the error log by correlating it to the indicated location and identifier code in the database.

6. The method of claim 1 further comprising analyzing the error log to update a handoff threshold between two base stations of the cellular communication network.

7. The method of claim 1 further comprising analyzing the updated error log and generating a notification signal.

8. In a cellular communication network, a system capable of performing a self-engineering task, the system comprising means for receiving and storing a location code that represents a location of a mobile unit, means for selecting one base station from the cellular communication network to send a signal to the mobile unit, and an error log for storing the mobile unit'"'"'s response, or lack thereof, to the signal.

9. The system of claim 8 wherein the means for receiving and storing also receives and stores an identifier code.

10. The system of claim 9 further comprising a database for storing the location code and the identifier code.

11. The system of claim 10 further comprising means for analyzing the error log by correlating it to the location code and the identifier code.

12. The system of claim 8 wherein the means for receiving and storing also receives and stores a technology code.

13. The system of claim 8 further comprising means for analyzing the updated error log and selecting a handoff threshold in response thereto.

14. The system of claim 8 further comprising means for analyzing the updated error log and generating a notification signal.