Random access in networks with carrier aggregation

A wireless device comprising:

• a) one or more communication interfaces;
• b) one or more processors;
• and
• c) memory storing instructions that, when executed, cause said wireless device to:
• i) receive from a base station at least one message comprising:
• (1) configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell, said plurality of cells being grouped into a plurality of cell groups comprising a primary cell group and a secondary cell group;
• and
• (2) a deactivation timer value for a deactivation timer corresponding to a secondary cell, said deactivation timer restarting in response to a packet transmission on said secondary cell, said corresponding secondary cell being deactivated in said wireless device in response to said deactivation timer expiring;
• ii) receive a control command initiating a random access process for a secondary cell in said secondary cell group;
• iii) transmit a random access preamble on random access resources of said secondary cell;
• and
• iv) abort said random access process on said secondary cell if said secondary cell is deactivated before said wireless device receives a random access response for said random access preamble transmission.

A base station comprising:

• a) one or more communication interfaces;
• b) one or more processors;
• and
• c) memory storing instructions that, when executed, cause said base station to:
• i) transmit to a wireless device at least one message comprising:
• (3) configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell, said plurality of cells being grouped into a plurality of cell groups comprising a primary cell group and a secondary cell group;
• and
• (4) a deactivation timer value for a deactivation timer corresponding to a secondary cell, said deactivation timer restarting in response to a packet transmission on said secondary cell, said corresponding secondary cell being deactivated in said wireless device in response to said deactivation timer expiring;
• ii) transmit a control command to a wireless device initiating a random access process for a secondary cell in said secondary cell group, said control command comprising an identifier of a random access preamble;
• and
• iii) abort said random access process on said secondary cell if said secondary cell is deactivated before said base station receives said random access preamble on random access resources.