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Carrier Activation Employing RRC messages

  • US 20130010641A1
  • Filed: 06/28/2012
  • Published: 01/10/2013
  • Est. Priority Date: 07/05/2011
  • Status: Abandoned Application
First Claim
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1. A method comprising:

  • a) storing, in a base station configured to communicate employing a plurality of carriers, for an RRC-connected wireless device;

    i) an identity of a primary carrier in said plurality of carriers, each of said plurality of carriers comprises a plurality of OFDM subcarriers;

    ii) an identity of each of at least one secondary carrier in said plurality of carriers; and

    iii) an activation status of each of said at least one secondary carrier;

    b) transmitting, by said base station, an RRC reconfiguration message to said RRC-connected wireless device using a first plurality of OFDM subcarriers in said plurality of OFDM subcarriers, said RRC reconfiguration message configuring at least one new secondary carrier in said at least one secondary carrier for said RRC-connected wireless device, said RRC reconfiguration message comprising;

    i) said identity of each of said at least one new secondary carrier;

    ii) configuration information about said at least one new secondary carrier; and

    iii) an activation status field of each of said at least one new secondary carrier, said activation status field;

    (1) having an active or inactive status for each of said at least one new secondary carrier; and

    (2) configured to cause said RRC-connected wireless device to control the activation of each of said at least one new secondary carrier according to said activation status field;

    c) receiving, by said base station, an RRC reconfiguration complete message from said RRC-connected wireless device indicating that said RRC reconfiguration message is received by said RRC-connected wireless device;

    d) transmitting, by said base station, a plurality of data packets to said RRC-connected wireless device on a data channel that at least employs a second plurality of OFDM subcarriers of at least one of said at least one new secondary carrier; and

    e) changing, by said base station, said activation status of an active carrier in said at least one secondary carrier from an active state to an inactive state after an associated deactivation timer of said active carrier of said RRC-connected wireless device expires.

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