Invention Application
US20160044545A1 FAST RETURN AFTER CIRCUIT SWITCHED FALL BACK (CSFB) RADIO RESOURCE CONTROL CONNECTION FAILURE 审中-公开
电路断开后快速返回(CSFB)无线电资源控制连接故障

  • Patent Title: FAST RETURN AFTER CIRCUIT SWITCHED FALL BACK (CSFB) RADIO RESOURCE CONTROL CONNECTION FAILURE
  • Patent Title (中): 电路断开后快速返回(CSFB)无线电资源控制连接故障
  • Application No.: US14451794
    Application Date: 2014-08-05
  • Publication No.: US20160044545A1
    Publication Date: 2016-02-11
  • Inventor: Ming YANGTom CHINRoy Howard DAVIS
  • Applicant: QUALCOMM Incorporated
  • Main IPC: H04W36/00
  • IPC: H04W36/00
FAST RETURN AFTER CIRCUIT SWITCHED FALL BACK (CSFB) RADIO RESOURCE CONTROL CONNECTION FAILURE
Abstract:
A user equipment (UE) improves wireless communication when the UE returns or attempts to return to a first radio access technology (RAT) from a second RAT after a circuit switched fall back (CSFB) call failure due to a radio resource control (RRC) connection failure. In one instance, the UE successfully redirects to the second RAT from a first RAT. The UE then determines that the circuit switched fall back call on the second RAT failed. In response to the determination of the failure, the UE waits for a predetermined amount of time for second RAT re-paging or a user re-initiating the circuit switched call. The UE then performs fast return to the first RAT after the predetermined amount of time expires or in response to a user input.
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