Transmit power control in multicarrier communications
First Claim
Patent Images
1. A wireless device comprising:
- one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to;
receive at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell, wherein the plurality of cells are grouped into a plurality of cell groups comprising a primary cell group and a secondary cell group;
transmit, via a secondary cell of the secondary cell group and based on a received control command, a plurality of preambles comprising a first preamble and a last preamble;
receive a random access response providing an uplink grant for transmission of a packet via the secondary cell; and
transmit the packet using a transmission power that is determined, at least in part, based on;
a power control value corresponding to a power control field in the uplink grant; and
a value of a total power ramp-up from the first preamble to the last preamble.
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Abstract
Methods and apparatuses are described for wireless communications. Cells may be grouped into a plurality of cell groups. A wireless device may transmit a plurality of preambles. The wireless device may also transmit a packet using a transmission power that is based on a power ramp-up of the preambles.
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Citations
52 Claims
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1. A wireless device comprising:
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one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device to; receive at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell, wherein the plurality of cells are grouped into a plurality of cell groups comprising a primary cell group and a secondary cell group; transmit, via a secondary cell of the secondary cell group and based on a received control command, a plurality of preambles comprising a first preamble and a last preamble; receive a random access response providing an uplink grant for transmission of a packet via the secondary cell; and transmit the packet using a transmission power that is determined, at least in part, based on; a power control value corresponding to a power control field in the uplink grant; and a value of a total power ramp-up from the first preamble to the last preamble. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A base station comprising:
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one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the base station to; transmit at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell, wherein the plurality of cells are grouped into a plurality of cell groups comprising a primary cell group and a secondary cell group; receive, via a secondary cell of the secondary cell group and after transmitting a control command, a plurality of preambles comprising a first preamble and a last preamble; transmit a random access response providing an uplink grant for transmission of an uplink packet via the secondary cell; and receive the uplink packet, wherein a transmission power for the uplink packet is determined, at least in part, based on; a power control value corresponding to a power control field in the uplink grant; and a value of a total power ramp-up from the first preamble to the last preamble. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method comprising:
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receiving, by a wireless device, at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell, wherein the plurality of cells are grouped into a plurality of cell groups comprising a primary cell group and a secondary cell group; transmitting, via a secondary cell of the secondary cell group and based on a received control command, a plurality of preambles comprising a first preamble and a last preamble; receiving a random access response providing an uplink grant for transmission of a packet via the secondary cell; and transmitting the packet using a transmission power that is determined, at least in part, based on; a power control value corresponding to a power control field in the uplink grant; and a value of a total power ramp-up from the first preamble to the last preamble. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. A method comprising:
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transmitting, by a base station, at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell, wherein the plurality of cells are grouped into a plurality of cell groups comprising a primary cell group and a secondary cell group; receiving, via a secondary cell of the secondary cell group and after transmitting a control command, a plurality of preambles comprising a first preamble and a last preamble; transmitting a random access response providing an uplink grant for transmission of an uplink packet via the secondary cell; and receiving the uplink packet, wherein a transmission power for the uplink packet is determined, at least in part, based on; a power control value corresponding to a power control field in the uplink grant; and a value of a total power ramp-up from the first preamble to the last preamble. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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35. A system comprising:
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a base station comprising; one or more processors; and memory storing instructions that, when executed by the one or more processors of the base station, cause the base station to; transmit at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell, wherein the plurality of cells are grouped into a plurality of cell groups comprising a primary cell group and a secondary cell group; and transmit a random access response providing an uplink grant for transmission of a packet via the secondary cell; and a wireless device comprising; one or more processors; and memory storing instructions that, when executed by the one or more processors of the wireless device, cause the wireless device to; transmit, via a secondary cell of the secondary cell group and based on a received control command, a plurality of preambles comprising a first preamble and a last preamble; and transmit the packet using a transmission power that is determined, at least in part, based on; a power control value corresponding to a power control field in the uplink grant; and a value of a total power ramp-up from the first preamble to the last preamble. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43)
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44. A method comprising:
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transmitting, by a base station and to a wireless device, at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell, wherein the plurality of cells are grouped into a plurality of cell groups comprising a primary cell group and a secondary cell group; transmitting, by the wireless device and to the base station, via a secondary cell of the secondary cell group and based on a received control command, a plurality of preambles comprising a first preamble and a last preamble; transmitting, by the base station and to the wireless device, a random access response providing an uplink grant for transmission of a packet via the secondary cell; and transmitting the packet, by the wireless device and to the base station, using a transmission power that is determined, at least in part, based on; a power control value corresponding to a power control field in the uplink grant; and a value of a total power ramp-up from the first preamble to the last preamble. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52)
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Specification