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Cellular device and method for determining operation mode thereof

  • US 10,681,536 B1
  • Filed: 04/01/2019
  • Issued: 06/09/2020
  • Est. Priority Date: 04/01/2019
  • Status: Active Grant
First Claim
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1. A method for determining an operation mode of a cellular device, comprising:

  • providing a first group cell identity obtaining step, wherein the first group cell identity obtaining step comprises configuring the cellular device to obtain a plurality of first group cell identities corresponding to a base station and storing the first group cell identities in a local list of the cellular device;

    providing a second group cell identity obtaining step, wherein the second group cell identity obtaining step comprises configuring the cellular device to perform a scan procedure to obtain a plurality of second group cell identities; and

    providing a group cell identity comparing step, wherein the cell identity comparing step comprises comparing the first group cell identities with the second group cell identities to determine the operation mode of the cellular device in a normal service mode or a limited service mode;

    wherein the first group cell identities are obtained at a first time, the second group cell identities are obtained at a second time, and the second time is after the first time;

    in response to determining that the first group cell identities are totally different from the second group cell identities, the cellular device enters the limited service mode; and

    in response to determining that at least one of the first group cell identities is equal to one of the second group cell identities, the cellular device enters the normal service mode.

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