Random access in networks with carrier aggregation
First Claim
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1. A method for use by a wireless device, the method comprising:
- a) receiving from a base station at least one message comprising;
i) 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
ii) 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;
b) receiving a control command initiating a random access process for a secondary cell in said secondary cell group;
c) transmitting a random access preamble on random access resources of said secondary cell; and
d) aborting 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.
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Abstract
A wireless device receives a control command initiating a random access process for a secondary cell. The wireless device transmits a random access preamble on random access resources of the secondary cell. The wireless device aborts the random access process if the secondary cell is deactivated before the wireless device receives a random access response.
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Citations
20 Claims
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1. A method for use by a wireless device, the method comprising:
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a) receiving from a base station at least one message comprising; i) 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 ii) 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; b) receiving a control command initiating a random access process for a secondary cell in said secondary cell group; c) transmitting a random access preamble on random access resources of said secondary cell; and d) aborting 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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless device comprising:
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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. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A base station comprising:
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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. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification