IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0097877
(2005-04-01)
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등록번호 |
US-7423994
(2008-09-09)
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발명자
/ 주소 |
- Liu,Jing
- Tuysserkani,Bijan
- Anderson,Jon James
- Otte,Kurt William
- Brehler,Matthias
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
12 인용 특허 :
4 |
초록
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Methods and apparatus for searching a list of pilot signals. A method is provided for searching a list of pilot signals in a communication network. The method includes defining a prio list that indicates an order in which the list of pilot signals will be searched, obtaining a search duration, and
Methods and apparatus for searching a list of pilot signals. A method is provided for searching a list of pilot signals in a communication network. The method includes defining a prio list that indicates an order in which the list of pilot signals will be searched, obtaining a search duration, and determining an indicator that identifies a portion of the prio list that can be searched within the search duration. The method also includes performing a search of the portion of the prio list, and updating the list of pilot signals based on the results of the search.
대표청구항
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What is claimed is: 1. A method for searching a list of pilot signals in a communication network, the method comprising: defining a prio list that indicates an order in which the list of pilot signals will be searched; obtaining a search duration; determining an indicator that identifies a portion
What is claimed is: 1. A method for searching a list of pilot signals in a communication network, the method comprising: defining a prio list that indicates an order in which the list of pilot signals will be searched; obtaining a search duration; determining an indicator that identifies a portion of the prio list that can be searched within the search duration, wherein some of the portion are searched using an associated over-the-air (OTA) window and some of the portion are searched using an associated reduced time window that is shorter than the associated OTA window and centered around an associated previous strongest signal peak; performing a search of the portion of the prio list; and updating the list of pilot signals based on the results of the search. 2. The method of claim 1, wherein the step of defining comprises: sorting the list of pilot signals into one or more sorted lists based on a signal strength characteristic; defining the prio list to include selected pilots from the one or more sorted lists. 3. The method of claim 2, wherein the step of sorting comprises sorting the list of pilot signals into the one or more sorted lists, wherein the one or more sorted lists comprise an old list, a strong list, and a reacquisition list. 4. The method of claim 1, wherein the step of obtaining comprises determining the search duration from a table. 5. The method of claim 1, wherein the step of obtaining comprises determining the search duration from a computation. 6. The method of claim 1, wherein the step of determining comprises: obtaining one or more window size parameters for the list of pilot signals; determining the indicator based on the window size parameters. 7. The method of claim 6, further comprising adjusting the one or more window size parameters so that the indicator indentifies a larger portion of the prio list that can be searched within the search duration. 8. The method of claim 7, wherein the step of adjusting comprises adjusting the one or more window size parameters for one or more strong pilots signals in the list of pilot signals. 9. Apparatus for searching a list of pilot signals in a communication network, the apparatus comprising: pilot prioritization logic that operates to define a prio list that indicates an order in which the list of pilot signals will be searched, obtain a search duration; and determine an indicator that identifies a portion of the prio list that can be searched within the search duration, wherein some of the portion are searched using an associated over-the-air (OTA) window and some of the portion are searched using an associated reduced time window that is shorter than the associated OTA window and centered around an associated previous strongest signal peak; search logic that operates to perform a search of the portion of the prio list; and processing logic that operates to update the list of pilot signals based on the results of the search. 10. The apparatus of claim 9, wherein the pilot prioritizationlogic comprises: logic that operates to sort the list of pilot signals into one or more sorted lists based on a signal strength characteristic; logic that operates to define the prio list to include selected pilots from the one or more sorted lists. 11. The apparatus of claim 10, wherein the logic that operates to sort comprises logic that operates to sort the list of pilot signals into the one or more sorted lists, wherein the one or more sorted lists comprise an old list, a strong list, and a reacquisition list. 12. The apparatus of claim 9, wherein the pilot prioritization logic comprises logic that operates to determine the search duration from a table. 13. The apparatus of claim 9, wherein the pilot prioritization logic comprises logic that operates to determine the search duration from a computation. 14. The apparatus of claim 9, wherein the pilot prioritizationlogic comprises: logic that operates to obtain one or more window size parameters for the list of pilot signals; logic that operates to determine the indicator based on the window size parameters. 15. The apparatus of claim 14, wherein the pilot prioritization logic further comprises logic that operates to adjust the one or more window size parameters so that the indicator identifies a larger portion of the prio list that can be searched within the search duration. 16. The apparatus of claim 15, wherein the logic that operates to adjust comprises logic that operates to adjust the one or more window size parameters for one or more strong pilots signals in the list of pilot signals. 17. Apparatus for searching a list of pilot signals in a communication network, the apparatus comprising: means for defining a prio list that indicates an order in which the list of pilot signals will be searched; means for obtaining a search duration; means for determining an indicator that identifies a portion of the prio list that can be searched within the search duration, wherein some of the portion are searched using an associated over-the-air (OTA) window and some of the portion are searched using an associated reduced time window that is shorter than the associated OTA window and centered around an associated previous strongest signal peak; means for performing a search of the portion of the prio list; and means for updating the list of pilot signals based on the results of the search. 18. The apparatus of claim 17, wherein the means for defining comprises: means for sorting the list of pilot signals into one or more sorted lists based on a signal strength characteristic; means for defining the prio list to include selected pilots from the one or more sorted lists. 19. The apparatus of claim 18, wherein the means for sorting comprises means for sorting the list of pilot signals into the one or more sorted lists, wherein the one or more sorted lists comprise an old list, a strong list, and a reacquisition list. 20. The apparatus of claim 17, wherein the means for obtaining comprises means for determining the search duration from a table. 21. The apparatus of claim 17, wherein the means for obtaining comprises means for determining the search duration from a computation. 22. The apparatus of claim 17, wherein the means for determining comprises: means for obtaining one or more window size parameters for the list of pilot signals; means for determining the indicator based on the window size parameters. 23. The apparatus of claim 22, further comprising means for adjusting the one or more window size parameters so that the indicator identifies a larger portion of the prio list that can be searched within the search duration. 24. The apparatus of claim 23, wherein the means for adjusting comprises means for adjusting the one or more window size parameters for one or more strong pilots signals in the list of pilot signals. 25. A computer-readable medium that performs a method for searching a list of pilot signals, said method comprising operations of: defining a prio list that indicates an order in which the list of pilot signals will be searched; obtaining a search duration; determining an indicator that identifies a portion of the prio list that can be searched within the search duration, wherein some of the portion are searched using an associated over-the-air (OTA) window and some of the portion are searched using an associated reduced time window that is shorter than the associated OTA window and centered around an associated previous strongest signal peak; performing a search of the portion of the prio list; and updating the list of pilot signals based on the results of the search. 26. The computer readable medium of claim 25, wherein the step of defining comprises: sorting the list of pilot signals into one or more sorted lists based on a signal strength characteristic; defining the prio list to include selected pilots from the one or more sorted lists. 27. The computer readable medium of claim 26, wherein the step of sorting comprises sorting the list of pilot signals into the one or more sorted lists, wherein the one or more sorted lists comprise an old list, a strong list, and a reacquisition list. 28. The computer readable medium of claim 25, wherein the step of obtaining comprises determining the search duration from a table. 29. The computer readable medium of claim 25, wherein the step of obtaining comprises determining the search duration from a computation. 30. The computer readable medium of claim 25, wherein the step of determining comprises: obtaining one or more window size parameters for the list of pilot signals; determining the indicator based on the window size parameters. 31. The computer readable medium of claim 30, further comprising adjusting the one or more window size parameters so that the indicator identifies a larger portion of the prio list that can be searched within the search duration. 32. The computer readable medium of claim 31, wherein the step of adjusting comprises adjusting the one or more window size parameters for one or more strong pilots signals in the list of pilot signals. 33. A method for searching a list of pilot signals, comprising: searching a first set of pilot signals from the list of pilot signals using an over-the-air (OTA) time window associated with each pilot signal when a pre-determined condition exists; searching a second set of pilot signals from the list of pilot signals when said predetermined condition does not exist, some of said second set of pilot signals searched using an associated OTA window and some of said second set of pilot signals searched using associated reduced time window that is shorter than the associated OTA window and centered around an associated previous strongest signal peak; and re-creating the list of pilot signals in accordance with results obtained from the search. 34. An apparatus for searching a list of pilot signals, comprising: a receiver for receiving one or more pilot signals identified in the list of pilot signals; an energy estimator for determining an energy associated with each of said one or more pilot signals; a memory for storing the list of pilot signals; and a processor for searching a first set of pilot signals from the list of pilot signals using an over-the-air (OTA) time window associated with each pilot signal when a predetermined condition exists, for searching a second set of pilot signals from the list of pilot signals when said predetermined condition does not exist, some of said second set of pilot signals searched using an associated OTA window and some of said second set of pilot signals searched using an associated reduced time window that is shorter than the associated OTA window and centered around an associated previous strongest signal peak, for re-creating the list of pilot signals in accordance with results obtained from the search, and for storing the re-created list of pilot signals in the memory. 35. A computer-readable medium that performs a method for searching a list of pilot signals, said method comprising operations of: searching a first set of pilot signals from the list of pilot signals using an over-the-air (OTA) time window associated with each pilot signal when a predetermined condition exists; searching a second set of pilot signals from the list of pilot signals when said predetermined condition does not exist, some of said second set of pilot signals searched using an associated OTA window and some of said second set of pilot signals searched using an associated reduced time window that is shorter than the associated OTA window and centered around an associated previous strongest signal peak; and re-creating the list of pilot signals in accordance with results obtained from the search.
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