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Methods for handling a service request procedures, and apparatuses using the same

  • US 9,554,259 B2
  • Filed: 11/14/2014
  • Issued: 01/24/2017
  • Est. Priority Date: 11/15/2013
  • Status: Active Grant
First Claim
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1. A method for handling a service request procedure by a mobile communication device, the method comprising:

  • starting a back-off timer associated with a service request procedure in response to the service request procedure for a non-emergency service having been failed for a maximum number of retries;

    initiating another service request procedure for an emergency bearer service before the back-off timer expires;

    stopping the back-off timer when initiating the service request procedure for an emergency bearer service; and

    forbidding any retry of the service request procedure for a non-emergency service with the PLMN when the back-off timer is running,wherein the service request procedure for a non-emergency service is performed using a first Radio Access Technology (RAT) supported by a Public Land Mobile Network (PLMN), and the service request procedure for an emergency bearer service is initiated using a second RAT supported by the PLMN or is initiated with another PLMN.

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