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US 9,179,425 B2Granted
Transmit power control in multicarrier communications
AssigneeOfinno Technologies, LLC
InventorEsmael Hejazi Dinan
Life of this patent
Estimating the term…
Abstract
A wireless device may compute transmission power of an uplink packet employing a first parameter calculated by accumulation of an initial value and at least one power control value corresponding to a sequence of subframes. The sequence of subframes starts from an initial subframe and ends with the first subframe. The initial subframe is identified by the most recent subframe before the first subframe with one of the following events: a predefined transmit power parameter value is updated by higher layers; and a random access response is received corresponding to a transmitted random access preamble on a secondary cell.
Claims20
A method comprising:
- a) receiving, by a wireless device, at least one radio resource control message from a base station, said at least one radio resource control message to cause in said wireless device:
- i) configuration of a plurality of cells comprising a primary cell and at least one secondary cell;
- ii) assignment of each of said at least one secondary cell to a cell group in a plurality of cell groups, said plurality of cell groups comprising:
- (1) a primary cell group comprising a first subset of said plurality of cells, said first subset comprising said primary cell;
- and
- (2) a secondary cell group comprising a second subset of said at least one secondary cell;
- and
- b) receiving, by said wireless device, a first control packet providing a first uplink grant to transmit a first uplink packet in a first subframe of a first secondary cell;
- c) computing, by said wireless device, transmission power of said first uplink packet employing, at least in part, a first parameter calculated by accumulation of an initial value and at least one power control value corresponding to a sequence of subframes, said sequence of subframes starting from an initial subframe and ending with said first subframe, said initial subframe identified by the most recent subframe before said first subframe with one of the following events:
- i) a predefined transmit power parameter value updated by higher layers;
- and
- ii) a random access response received corresponding to a transmitted random access preamble on said first secondary cell;
- and
- d) transmitting, by said wireless device, said first uplink packet in radio resources identified by said first uplink grant.
11 more elements
A method comprising:
- a) receiving, by a wireless device, at least one radio resource control message from a base station, said at least one radio resource control message to cause in said wireless device configuration of a plurality of cells comprising a primary cell and at least one secondary cell;
- b) receiving, by said wireless device, a first control packet providing a first uplink grant to transmit a first uplink packet in a first subframe of a first secondary cell;
- c) computing, by said wireless device, transmission power of said first uplink packet employing, at least in part, a first parameter calculated by accumulation of an initial value and at least one power control value corresponding to a sequence of subframes, said sequence of subframes starting from an initial subframe and ending with said first subframe, said initial subframe identified by the most recent subframe before said first subframe with one of the following events:
- i) a predefined transmit power parameter value updated by higher layers;
- and
- ii) a random access response received corresponding to a transmitted random access preamble on said first secondary cell;
- and
- d) transmitting, by said wireless device, said first uplink packet in radio resources identified by said first uplink grant.
5 more elements
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 at least one radio resource control message from a base station, said at least one radio resource control message to cause in said wireless device configuration of a plurality of cells comprising a primary cell and at least one secondary cell;
- ii) receive a first control packet providing a first uplink grant to transmit a first uplink packet in a first subframe of a first secondary cell;
- iii) compute transmission power of said first uplink packet employing, at least in part, a first parameter calculated by accumulation of an initial value and at least one power control value corresponding to a sequence of subframes, said sequence of subframes starting from an initial subframe and ending with said first subframe, said initial subframe identified by the most recent subframe before said first subframe with one of the following events:
- (1) a predefined transmit power parameter value updated by higher layers;
- and
- (2) a random access response received corresponding to a transmitted random access preamble on said first secondary cell;
- and
- iv) transmit said first uplink packet in radio resources identified by said first uplink grant.
9 more elements
Dependencies are inferred from the claim text.