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Method and apparatus for transmitting/receiving data using plurality of carriers in mobile communication system

  • US 10,149,175 B2
  • Filed: 10/29/2014
  • Issued: 12/04/2018
  • Est. Priority Date: 10/29/2013
  • Status: Active Grant
First Claim
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1. A method by a terminal in a wireless communication system, comprising:

  • receiving, from a first base station with which a first cell group is associated, a control message for configuring a second cell group associated with a second base station, wherein the control message includes first information on a bearer type;

    identifying whether the bearer type is a first bearer type, wherein a bearer is associated with both the first base station and the second base station in the first bearer type;

    if the bearer type is the first bearer type, obtaining second information in the control message, wherein the second information indicates whether uplink transmission is performed via the second cell group associated with the second base station for the first bearer type;

    if the second information indicates that the uplink transmission is performed via the second cell group associated with the second base station for the first bearer type, transmitting uplink data via the second cell group associated with the second base station, andtransmitting uplink data via the second cell group associated with the second base station if the bearer type is a second bearer type, wherein a bearer is related to the second cell group associated with the second base station in the second bearer type.

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