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Communication method and apparatus for multi-standby mode in a communication terminal

  • US 8,862,078 B2
  • Filed: 10/13/2011
  • Issued: 10/14/2014
  • Est. Priority Date: 12/20/2010
  • Status: Active Grant
First Claim
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1. A communication method in a communication terminal having a single communication module and at least two Subscriber Identification Module (SIM) cards, the method comprising:

  • performing a first call mode when a first call is connected through a first base station in a standby mode using the communication module and a first SIM card through a first time slot in each frame allocated by the first base station;

    detecting, when a second call is received through a second base station while performing the first call mode, a user input for determining whether to perform a second call mode;

    performing, when a user input corresponding to a request to perform the second call mode is detected, the second call mode using the communication module and a second SIM card through a second time slot in the each frame allocated by the second base station, the second time slot being spaced apart from the first time slot;

    estimating an echo component from the first call and the second call;

    calculating a function to reduce the echo component based on the estimated echo component; and

    modifying an audio signal corresponding to at least one of the first call and the second call based on the calculated function to reduce the echo component.

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