Uplink Control Channel in a Wireless Network
First Claim
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1. A method comprising:
- receiving, by a wireless device, at least one message comprising configuration parameters of a plurality of cells grouped into a plurality of timing advance groups (TAGs), the plurality of cells comprising;
a primary cell with a primary physical uplink control channel (PUCCH); and
a PUCCH secondary cell with a secondary PUCCH, wherein the PUCCH secondary cell is in a first TAG in the plurality of TAGs;
receiving, in subframe n, an activation command activating the PUCCH secondary cell;
receiving a command initiating transmission of a preamble on the first TAG;
receiving a response comprising a timing advance command (TAC); and
starting transmission of valid channel state information (CSI) on the PUCCH secondary cell in subframe n+k, wherein k is greater than eight and is based on a delay from receiving the activation command until the wireless device applies the received TAC.
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Abstract
A physical uplink control channel (PUCCH) secondary cell is in a first timing advance group. A wireless device receives, in subframe n, an activation command activating the PUCCH secondary cell. The wireless device receives a random access response comprising a timing advance command (TAC). The wireless device starts transmission of valid channel state information (CSI) on the PUCCH secondary cell in subframe n+k. k is greater than eight and is based on a delay from receiving the activation command until the wireless device applies the received TAC.
63 Citations
20 Claims
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1. A method comprising:
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receiving, by a wireless device, at least one message comprising configuration parameters of a plurality of cells grouped into a plurality of timing advance groups (TAGs), the plurality of cells comprising; a primary cell with a primary physical uplink control channel (PUCCH); and a PUCCH secondary cell with a secondary PUCCH, wherein the PUCCH secondary cell is in a first TAG in the plurality of TAGs; receiving, in subframe n, an activation command activating the PUCCH secondary cell; receiving a command initiating transmission of a preamble on the first TAG; receiving a response comprising a timing advance command (TAC); and starting transmission of valid channel state information (CSI) on the PUCCH secondary cell in subframe n+k, wherein k is greater than eight and is based on a delay from receiving the activation command until the wireless device applies the received TAC. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless device comprising:
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one or more processors; and memory storing instructions that, when executed, cause the wireless device to; receive at least one message comprising configuration parameters of a plurality of cells are grouped into a plurality of timing advance groups (TAGs), the plurality of cells comprising; a primary cell with a primary physical uplink control channel (PUCCH); and a PUCCH secondary cell with a secondary PUCCH, wherein the PUCCH secondary cell is in a first TAG in the plurality of TAGs; receive, in subframe n, an activation command activating the PUCCH secondary cell; receive a command initiating transmission of a preamble on the first TAG; receive a response comprising a timing advance command (TAC); and start transmission of valid channel state information (CSI) on the PUCCH secondary cell in subframe n+k, wherein k is greater than eight and is based on a delay from receiving the activation command until the wireless device applies the received TAC. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 20)
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18. A method comprising:
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transmitting, by a base station, at least one message comprising configuration parameters of a plurality of cells grouped into a plurality of timing advance groups (TAGs), the plurality of cells comprising; a primary cell with a primary physical uplink control channel (PUCCH); and a PUCCH secondary cell with a secondary PUCCH, wherein the PUCCH secondary cell is in a first TAG in the plurality of TAGs; transmitting, in subframe n, an activation command activating the PUCCH secondary cell; transmitting a command initiating transmission of a preamble on the first TAG; transmitting a response comprising a timing advance command (TAC); and starting reception of valid channel state information (CSI) from the wireless device on the PUCCH secondary cell in subframe n+k, wherein k is greater than eight and is based on a delay from transmitting the activation command until the TAC is applied to uplink signals. - View Dependent Claims (19)
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Specification