Performing inter-frequency measurements in a mobile network

• US 8,995,925 B2
• Filed: 04/25/2014
• Issued: 03/31/2015
• Est. Priority Date: 10/26/2011
• Status: Active Grant

• Current Assignee: Blackberry Limited
• Original Assignee: Blackberry Limited
• Inventors: Ekici, Ozgur
• Primary Examiner(s): Dao, Minh D
• Application Number:
  US14/262,312
• Publication Number:
  US 20140235176A1
• Time in Patent Office: 340 Days
• Field of Search: 455/67.11, 455/435.2, 455/166.2, 455/115.3, 455/226.2, 455/226.1, 455/115.1, 370/252, 370/333, 370/332
• US Class Current: 455/67.11
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports

Abstract

Methods, apparatus and articles of manufacture for performing inter-frequency measurements in a mobile network are disclosed. Example methods disclosed herein include a mobile station receiving, from a network, one or more lists specifying a set of frequencies for which measurements are to be performed. Such example methods also include the mobile station varying a rate at which the measurements are to be performed for a first frequency of the set of frequencies based on a number of frequencies for which the measurements are to be performed.

Claims

1. A method in a mobile station, the method comprising:

receiving, from a network, one or more lists specifying a set of frequencies for which measurements are to be performed; and

varying a rate at which the measurements are to be performed for a first frequency of the set of frequencies based on a number of frequencies for which the measurements are to be performed.

2. A method as defined in claim 1, wherein varying the rate comprises scaling the rate at which the measurements are to be performed for the first frequency in proportion to the number of frequencies for which the measurements are to be performed.

3. A method as defined in claim 1, further comprising prioritizing performance of the measurements for at least a first subset of the frequencies based on at least one criterion.

4. A method as defined in claim 3, wherein the at least one criterion comprises prioritizing the performance of the measurements based on an order of the respective ones of the set of frequencies in the one or more lists.

5. A method as defined in claim 4, further comprising prioritizing the first frequency over a second frequency of the set of frequencies if information specifying the first frequency in the one or more lists appears before information specifying the second frequency in the one or more lists.

6. A method as defined in claim 3, further comprising performing the measurements for a second subset of the frequencies according to a round-robin measurement process.

7. A method as defined in claim 3, wherein the one or more lists are one or more first lists, and further comprising maintaining a second list of frequencies indicating which ones of the set of frequencies have been prioritized for measurement.

8. A tangible computer readable medium comprising computer readable instructions which, when executed, cause a mobile station to at least:

access one or more lists received from a network, the one or more lists specifying a set of frequencies for which measurements are to be performed; and

vary a rate at which the measurements are to be performed for a first frequency of the set of frequencies based on a number of frequencies for which the measurements are to be performed.

9. A tangible computer readable medium as defined in claim 8, wherein to vary the rate, the instructions, when executed, cause the mobile station to scale the rate at which the measurements are to be performed for the first frequency in proportion to the number of frequencies for which the measurements are to be performed.

10. A tangible computer readable medium as defined in claim 8, wherein the instructions, when executed, further cause the mobile station to prioritize performance of the measurements for at least a first subset of the frequencies based on at least one criterion.

11. A tangible computer readable medium as defined in claim 10, wherein the at least one criterion comprises prioritizing the performance of the measurements based on an order of the respective ones of the set of frequencies in the one or more lists.

12. A tangible computer readable medium as defined in claim 11, wherein the instructions, when executed, further cause the mobile station to prioritize the first frequency over a second frequency of the set of frequencies if information specifying the first frequency in the one or more lists appears before information specifying the second frequency in the one or more lists.

13. A tangible computer readable medium as defined in claim 10, wherein the instructions, when executed, further cause the mobile station to perform the measurements for a second subset of the frequencies according to a round-robin measurement process.

14. A tangible computer readable medium as defined in claim 10, wherein the one or more lists are one or more first lists, and the instructions, when executed, further cause the mobile station to maintain a second list of frequencies indicating which ones of the set of frequencies have been prioritized for measurement.

15. A mobile station comprising:

a memory to store one or more lists received from a network, the one or more lists specifying a set of frequencies for which measurements are to be performed; and

a processor to vary a rate at which the measurements are to be performed for a first frequency of the set of frequencies based on a number of frequencies for which the measurements are to be performed.

16. A mobile station as defined in claim 15, wherein to vary the rate, the processor is to scale the rate at which the measurements are to be performed for the first frequency in proportion to the number of frequencies for which the measurements are to be performed.

17. A mobile station as defined in claim 15, wherein the processor is further to prioritize performance of the measurements for at least a first subset of the frequencies based on at least one criterion.

18. A mobile station as defined in claim 17, wherein the at least one criterion comprises prioritizing the performance of the measurements based on an order of the respective ones of the set of frequencies in the one or more lists.

19. A mobile station as defined in claim 18, wherein the processor is further to prioritize the first frequency over a second frequency of the set of frequencies if information specifying the first frequency in the one or more lists appears before information specifying the second frequency in the one or more lists.

20. A mobile station as defined in claim 17, wherein the processor is further to perform the measurements for a second subset of the frequencies according to a round-robin measurement process.

21. A mobile station as defined in claim 17, wherein the one or more lists are one or more first lists, and the processor is further to maintain a second list of frequencies indicating which ones of the set of frequencies have been prioritized for measurement.