Deferred measurement control reading of system information block (SIB) messages

• US 9,237,485 B2
• Filed: 11/09/2012
• Issued: 01/12/2016
• Est. Priority Date: 11/18/2011
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Klingenbrunn, Thomas, Shi, Yongsheng, Pica, Francesco, Umatt, Bhupesh Manoharlal
• Primary Examiner(s): Moutaouakil, Mounir
• Application Number:
  US13/673,761
• Publication Number:
  US 20130128863A1
• Time in Patent Office: 1,159 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04W 36/0022 for transferring data sessions between adjacent core network technologies
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 48/12 using downlink control channel

Abstract

A method of wireless communication defers measurement control reading of a SIB. The method includes determining whether a user equipment (UE) has been redirected to a first radio access technology (RAT) from a second RAT. The method also includes selectively reading a system information block (SIB) based on whether the UE was redirected to the first RAT from a second RAT.

Claims

1. A method of wireless communication, comprising:

determining whether a user equipment (UE), in a deferred measurement control reading (DMCR) state, is establishing a connection with a first radio access technology (RAT) based at least in part on a redirection from a second RAT; and

selectively reading, at the UE, a system information block (SIB) broadcast from the first RAT based at least in part on whether the UE was redirected to the first RAT from the second RAT, the UE skipping reading the SIB when the UE was redirected to the first RAT from the second RAT, and the UE reading the SIB when the connection with the first RAT is not from the redirection.

2. The method of claim 1, in which the UE has been redirected to the first RAT for a circuit switched fall back (CSFB) call.

3. The method of claim 1, in which the first RAT comprises UTRAN and the second RAT comprises EUTRAN.

4. The method of claim 1, in which the SIB comprises SIB 19.

5. 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 determine whether a user equipment (UE), in a deferred measurement control reading (DMCR) state, is establishing a connection with a first radio access technology (RAT) based at least in part on a redirection from a second RAT; and

to selectively read, at the UE, a system information block (SIB) broadcast from the first RAT based at least in part on whether the UE was redirected to the first RAT from the second RAT, the UE skipping reading the SIB when the UE was redirected to the first RAT from the second RAT, and the UE reading the SIB when the connection with the first RAT is not from the redirection.

6. The apparatus of claim 5, in which the UE was redirected to the first RAT for a circuit switched fall back (CSFB) call.

7. The apparatus of claim 5, in which the first RAT comprises UTRAN and the second RAT comprises EUTRAN.

8. The apparatus of claim 5, in which the SIB comprises SIB 19.

9. A non-transitory computer-readable medium having program code recorded thereon, the program code configured to:

determine whether a user equipment (UE), in a deferred measurement control reading (DMCR) state, is establishing a connection with a first radio access technology (RAT) based at least in part on a redirection from a second RAT; and

selectively read, at the UE, a system information block (SIB) broadcast from the first RAT based at least in part on whether the UE was redirected to the first RAT from the second RAT, the UE skipping reading the SIB when the UE was redirected to the first RAT from the second RAT, and the UE reading the SIB when the connection with the first RAT is not from the redirection.

10. The non-transitory computer-readable medium of claim 9, in which the first RAT comprises UTRAN and the second RAT comprises EUTRAN.

11. An apparatus for wireless communication, comprising:

means for determining whether a user equipment (UE), in a deferred measurement control reading (DMCR) state, is establishing a connection with a first radio access technology (RAT) based at least in part on a redirection from a second RAT; and

means for selectively reading, at the UE, a system information block (SIB) broadcast from the first RAT based at least in part on whether the UE was redirected to the first RAT from the second RAT, the UE skipping reading the SIB when the UE was redirected to the first RAT from the second RAT, and the UE reading the SIB when the connection with the first RAT is not from the redirection.

12. The apparatus of claim 11, in which the first RAT comprises UTRAN and the second RAT comprises EUTRAN.