Cell change order and cell reselection by a wireless device

Abstract

A method and/or apparatus for wireless communication in a multi-SIM user equipment includes receiving a list of neighboring base stations from a serving base station of a first SIM. The serving base station of a second SIM is identified and a final target base station is determined for a cell reselection procedure and/or cell change order procedure from among the neighboring base stations and the serving base station of the second SIM.

What is claimed is: 
     
       1. A method of wireless communication in a multiple subscriber identity module (SIM) user equipment (UE) comprising:
 receiving a list of neighboring base stations from a serving base station of a first SIM; 
 identifying a serving base station of a second SIM; and 
 determining a final target base station for a cell reselection procedure and/or cell change order procedure from among the neighboring base stations and the serving base station of the second SIM, in which the determining includes comparing a first signal metric of a candidate target base station to a second signal metric of the serving base station of the second SIM, and selecting the candidate target base station as the final target base station in response to the first signal metric being greater than the second signal metric, or selecting the serving base station of the second SIM as the final target base station in response to the first signal metric being less than the second signal metric. 
 
     
     
       2. The method of  claim 1 , further comprising adding the serving base station of the second SIM to the list of neighboring base stations of the first SIM. 
     
     
       3. The method of  claim 1 , further comprising:
 receiving an indication of the candidate target base station from the serving base station of the first SIM in a cell change order, the candidate target base station being different from the serving base station of the second SIM. 
 
     
     
       4. The method of  claim 1 , further comprising:
 selecting the candidate target base station from the list of neighboring base stations by the UE in a cell reselection process, the candidate target base station being different from the serving base station of the second SIM. 
 
     
     
       5. The method of  claim 1 , in which the neighboring base stations and the serving base station of the second SIM are in a first radio access technology (RAT) and the serving base station of the first SIM is in a second RAT. 
     
     
       6. The method of  claim 5 , in which the first RAT is the same as the second RAT. 
     
     
       7. An apparatus for wireless communication, comprising:
 means for receiving a list of neighboring base stations from a serving base station of a first SIM; 
 means for identifying a serving base station of a second SIM; and 
 means for determining a final target base station for a cell reselection procedure and/or cell change order procedure from among the neighboring base stations and the serving base station of the second SIM, in which the means for determining includes means for comparing a first signal metric of a candidate target base station to a second signal metric of the serving base station of the second SIM, and selecting the candidate target base station as the final target base station in response to the first signal metric being greater than the second signal metric, or selecting the serving base station of the second SIM as the final target base station in response to the first signal metric being less than the second signal metric. 
 
     
     
       8. The apparatus of  claim 7 , further comprising means for adding the serving base station of the second SIM to the list of neighboring base stations of the first SIM. 
     
     
       9. The apparatus of  claim 7 , further comprising:
 means for receiving an indication of the candidate target base station from the serving base station of the first SIM in a cell change order, the candidate target base station being different from the serving base station of the second SIM. 
 
     
     
       10. The apparatus of  claim 7 , further comprising:
 means for selecting the candidate target base station from the list of neighboring base stations by a UE in a cell reselection process, the candidate target base station being different from the serving base station of the second SIM. 
 
     
     
       11. The apparatus of  claim 7 , in which the neighboring base stations and the serving base station of the second SIM are in a first radio access technology (RAT) and the serving base station of the first SIM is in a second RAT. 
     
     
       12. The apparatus of  claim 11 , in which the first RAT is the same as the second RAT. 
     
     
       13. An apparatus for wireless communication, comprising:
 a memory; and 
 at least one processor coupled to the memory, the at least one processor being configured:
 to receive a list of neighboring base stations from a serving base station of a first SIM; 
 to identify a serving base station of a second SIM; and 
 to determine a final target base station for a cell reselection procedure and/or cell change order procedure from among the neighboring base stations and the serving base station of the second SIM, by comparing a first signal metric of a candidate target base station to a second signal metric of the serving base station of the second SIM, and selecting the candidate target base station as the final target base station in response to the first signal metric being greater than the second signal metric, or selecting the serving base station of the second SIM as the final target base station in response to the first signal metric being less than the second signal metric. 
 
 
     
     
       14. The apparatus of  claim 13 , in which the at least one processor is further configured to add the serving base station of the second SIM to the list of neighboring base stations of the first SIM. 
     
     
       15. The apparatus of  claim 13 , in which the at least one processor is further configured:
 to receive an indication of the candidate target base station from the serving base station of the first SIM in a cell change order, the candidate target base station being different from the serving base station of the second SIM. 
 
     
     
       16. The apparatus of  claim 13 , in which the at least one processor is further configured:
 to select the candidate target base station from the list of neighboring base stations by a UE in a cell reselection process, the candidate target base station being different from the serving base station of the second SIM. 
 
     
     
       17. The apparatus of  claim 13 , in which the neighboring base stations and the serving base station of the second SIM are in a first radio access technology (RAT) and the serving base station of the first SIM is in a second RAT. 
     
     
       18. The apparatus of  claim 17 , in which the first RAT is the same as the second RAT. 
     
     
       19. A computer program product for wireless communication in a wireless network, comprising:
 a non-transitory computer-readable medium having non-transitory program code recorded thereon, the program code comprising:
 program code to receive a list of neighboring base stations from a serving base station of a first SIM; 
 program code to identify a serving base station of a second SIM; and 
 program code to determine a final target base station for a cell reselection procedure and/or cell change order procedure from among the neighboring base stations and the serving base station of the second SIM, by comparing a first signal metric of a candidate target base station to a second signal metric of the serving base station of the second SIM, to select the candidate target base station as the final target base station in response to the first signal metric being greater than the second signal metric, or to select the serving base station of the second SIM as the final target base station in response to the first signal metric being less than the second signal metric. 
 
 
     
     
       20. The computer program product of  claim 19 , in which the program code further comprises program code to add the serving base station of the second SIM to the list of neighboring base stations of the first SIM. 
     
     
       21. The computer program product of  claim 19 , in which the program code further comprises:
 program code to receive an indication of the candidate target base station from the serving base station of the first SIM in a cell change order, the candidate target base station being different from the serving base station of the second SIM. 
 
     
     
       22. The computer program product of  claim 19 , in which the program code further comprises:
 program code to select the candidate target base station from the list of neighboring base stations by a UE in a cell reselection process, the candidate target base station being different from the serving base station of the second SIM. 
 
     
     
       23. The computer program product of  claim 19 , in which the neighboring base stations and the serving base station of the second SIM are in a first radio access technology (RAT) and the serving base station of the first SIM is in a second RAT. 
     
     
       24. The computer program product of  claim 23 , in which the first RAT is the same as the second RAT.