Method and system for frequency usage

• US 7,738,874 B1
• Filed: 09/05/2007
• Issued: 06/15/2010
• Est. Priority Date: 10/17/2002
• Status: Expired due to Term

• Current Assignee: Sprint Spectrum LLC (Deutsche Telekom AG)
• Original Assignee: Sprint Spectrum LP (Deutsche Telekom AG)
• Inventors: Fortuna, Frederick L., Oh, Dae-Sik, Sill, Timothy W., Yarkosky, Mark
• Primary Examiner(s): RAMPURIA, SHARAD K
• Application Number:
  US11/850,275
• Time in Patent Office: 1,014 Days
• Field of Search: 455436-444, 455/450, 455/423, 455/67.11, 455/447, 455/562.1, 455/422.1, 455/41.2, 370331-333, 370/328, 370/338
• US Class Current: 455/441
• CPC Class Codes: H04W 64/006 with additional information processing, e.g. for direction or speed determination
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 72/563 of the wireless resources

Abstract

A wireless telecommunications network that uses a first frequency spectrum for wireless communications in a plurality of generally contiguous wireless coverage areas also has available a second frequency spectrum for wireless communications in a high-traffic wireless coverage area. Mobile stations in the high-traffic wireless coverage area are classified as either static or dynamic based on determinations of their speeds. The wireless telecommunications network uses the first frequency spectrum for wireless communications with dynamic mobile stations in the high-traffic wireless coverage area and uses the second frequency spectrum for wireless communications with static mobile station in the high-traffic wireless coverage area. The wireless telecommunications network may instruct the mobile stations in the high-traffic coverage area to use the appropriate frequency spectrum.

Claims

1. A method of frequency usage in a wireless telecommunications network, said wireless telecommunications network including a transceiver system providing a wireless coverage area, said transceiver system being able to use at least a first frequency spectrum and a second frequency spectrum for communications with mobile stations located in said wireless coverage area, said second frequency spectrum being different than said first frequency spectrum, said method comprising:

determining a speed of a mobile station by determining at least a first position of said mobile station at a first time and a second position of said mobile station at a second time; and

if said speed is below a first threshold value, said wireless telecommunications network instructing said mobile station to use said second frequency spectrum.

2. The method of claim 1, wherein said first frequency spectrum includes a first uplink frequency band and a first downlink frequency band and said second frequency spectrum includes a second uplink frequency band and a second downlink frequency band.

3. The method of claim 2, wherein said first uplink frequency band does not overlap said second uplink frequency band and said first downlink frequency band does not overlap said second downlink frequency band.

4. The method of claim 2, further comprising:

said mobile station responsively using said second frequency spectrum in said wireless coverage area.

5. The method of claim 4, wherein said mobile station using said second frequency spectrum in said wireless coverage area includes said mobile station monitoring a paging channel in said second downlink frequency band.

6. The method of claim 4, wherein said mobile station using said second frequency spectrum in said wireless coverage area includes said mobile station receiving a transmission from said transceiver system over a paging channel in said second downlink frequency band.

7. The method of claim 4, wherein said mobile station using said second frequency spectrum in said wireless coverage area includes said mobile station transmitting a message to said transceiver system over an access channel in said second uplink frequency band.

8. The method of claim 4, wherein said mobile station using said second frequency spectrum in said wireless coverage area includes said mobile station receiving transmissions from said transceiver system over a forward traffic channel in said second downlink frequency band and transmitting to said transceiver system over a reverse traffic channel in said second uplink frequency band.

9. The method of claim 4, wherein said wireless telecommunications network instructing said mobile station to use said second frequency spectrum comprises:

said transceiver system transmitting a message to said mobile station over a paging channel in said first downlink frequency band.

10. The method of claim 9, further comprising:

if said speed is above a second threshold value, said wireless telecommunications network instructing said mobile station to use said first frequency spectrum; and

said mobile station using said first frequency spectrum in said wireless coverage area.

11. The method of claim 10, wherein said wireless telecommunications network instructing said mobile station to use said first frequency spectrum comprises:

said transceiver system transmitting a message to said mobile station over a paging channel in said second downlink frequency band.

12. The method of claim 1, wherein determining a speed of a mobile station by determining at least a first position of said mobile station at a first time and a second position of said mobile station at a second time comprises:

said wireless telecommunications network transmitting a first location request to said mobile station;

said mobile station responsively transmitting a first location response, said first location response containing a first position of said mobile station at a first time;

said wireless telecommunications network transmitting a second location request to said mobile station; and

said mobile station responsively transmitting a second location response, said second location response containing a second position of said mobile station at a second time.

13. The method of claim 1, wherein said wireless telecommunications network determines a speed of said mobile station when said mobile station enters said wireless coverage area.

14. The method of claim 1, wherein said wireless telecommunications network determines a speed of said mobile station at periodic time intervals.

15. The method of claim 1, wherein said transceiver system includes a base transceiver station (BTS).

16. The method of claim 1, wherein said transceiver system and said mobile station communicate over a code division multiple access (CDMA) air interface.

17. A system for controlling frequency usage in a wireless telecommunications network, said system comprising:

a transceiver system for wirelessly communicating with mobile stations located in a wireless coverage area, said transceiver system using a first frequency spectrum for communications with dynamic mobile stations, said transceiver system using a second frequency spectrum for communications with static mobile stations;

data storage containing tracking records for mobile stations located in said wireless coverage area, wherein at least one of said tracking records includes at least a first position at a first time of at least one mobile station and a second position at a second time of said at least one mobile station; and

a controller for controlling said transceiver system, said controller classifying mobile stations as static or dynamic based on said tracking records.

18. The system of claim 17, wherein said transceiver system includes a base transceiver station (BTS).

19. The system of claim 17, wherein said controller includes a base station controller (BSC).