CDMA search processing load reduction

• US 20020060998A1
• Filed: 11/15/2001
• Published: 05/23/2002
• Est. Priority Date: 11/22/2000
• Status: Abandoned Application

• Current Assignee: Jason F. Hunzinger
• Original Assignee: Jason F. Hunzinger
• Inventors: Hunzinger, Jason F.
• Application Number:
  US09/998,845
• Publication Number:
  US 20020060998A1
• Time in Patent Office: Days
• US Class Current: 370/335
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04B 2201/70701 featuring pilot assisted reception
• CPC Class Codes: H04B 2201/70702 Intercell-related aspects
• CPC Class Codes: H04W 36/0088 Scheduling hand-off measurements
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information

Abstract

A search-processing load for a wireless device is adjusted to reduce processor loading. A reference sector search frequency is measured and compared to a predetermined limit. If the reference sector search frequency exceeds the predetermined limit, then the search-processing load is reduced.

Claims

1. A method of adjusting a search-processing load for a wireless device, comprising:

measuring the frequency in which a reference sector is searched;

determining if the frequency in which a reference sector is searched is greater than a predetermined limit; and

reducing the search processing load when the frequency in which a reference sector is searched is greater than the predetermined limit.

2. The method of claim 1, further comprising pausing processing associated with pilot searches for a predetermined time period to reduce the search processing load.

3. The method of claim 1, further comprising adjusting a set of search parameters to lower the search-processing load.

4. The method of claim 1, further comprising searching one of a plurality of subsets of secondary sectors each time the reference sector is searched.

5. The method of claim 4, further comprising selecting a different one of the plurality of subsets of secondary sectors with each reference sector search.

6. The method of claim 1, further comprising increasing the search processing load when the frequency in which a reference sector is searched is below than the predetermined limit.

7. The method of claim 1, further comprising selecting a reference sector.

8. The method of claim 7, wherein the reference sector is selected from a group consisting of the earliest received signal, the strongest received signal, and the most reliable signal.

9. The method of claim 1, further comprising adjusting the predetermined limit based on historical information.

10. The method of claim 1, further comprising reselecting the reference sector following a handoff.

11. A mobile station for use in a wireless communication system comprising a processor which determines how often a reference sector is being searched and compares how often the reference sector is searched to a threshold value, wherein the processor reduces how often the reference sector is searched when the reference sector is searched more than the threshold value.

12. The mobile station of claim 11, wherein the processor reduces how often the reference sector is searched by pausing processing associated with pilot searches for a predetermined time period.

13. The mobile station of claim 11, wherein the processor reduces how often the reference sector is searched by adjusting a set of search parameters.

14. The mobile station of claim 11, wherein the mobile station searches one of a plurality of subsets of secondary sectors each time the reference sector is searched.

15. The mobile station of claim 14, wherein the mobile station selects a different one of the plurality of subsets of secondary sectors with each reference sector search.

16. The mobile station of claim 11, wherein the processor increases how often the reference sector is searched when the reference sector is searched less than the threshold value.

17. The mobile station of claim 11, wherein the processor selects a reference sector.

18. The mobile station of claim 17, wherein the reference sector is selected from a group consisting of the earliest received signal, the strongest received signal, and the most reliable signal.

19. The mobile station of claim 11, wherein the processor adjusts the threshold value based on historical information.

20. The mobile station of claim 11, wherein the mobile station reselects the reference sector following a handoff.