Power Scaling in Multicarrier Wireless Device
First Claim
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1. A method comprising:
- a) receiving, by a wireless device, at least one control message from a base station, said at least one control message causing 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 subset comprising said primary cell; and
(2) a secondary cell group comprising a second subset of said at least one secondary cell;
b) receiving, by said wireless device, a control command for transmission of a random access preamble on a first cell in said plurality of cells, said random access preamble transmitted in parallel with at least one of the following parallel uplink transmissions;
i) a first control packet on an uplink control channel of said primary cell;
ii) a second packet comprising uplink control information on an uplink data channel of one of said plurality of cells; and
iii) at least one third packet on at least one uplink data channel of said plurality of cells;
c) determining, by said wireless device, a preamble transmission power for said random access preamble; and
d) if a total calculated transmission power exceeds a predefined value, said wireless device obtaining transmission power of said at least one parallel uplink transmission according to the following priorities;
i) said random access preamble transmission having a first priority;
ii) said first control packet having a second priority lower than said first priority;
iii) said second packet having a third priority lower than said second priority; and
iv) said at least one third packet having a fourth priority lower than said third priority; and
wherein said priorities are employed by said wireless device to reduce or scale linear transmission power of one or more of said at least one parallel transmission such that an updated value of said total calculated transmission power is equal to or less than said predefined value.
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Abstract
A wireless device receives a control command for transmission of a random access preamble on a first cell. The wireless device transmits the random access preamble in parallel with a first control packet, a second packet and/or a third packet. The wireless device determines a transmission power for the random access preamble. If a total calculated transmission power exceeds a predefined value, the wireless device reducing or scaling linear transmission power of one or more of the at least one parallel uplink transmission considering a higher priority for the transmission power of the random access preamble.
201 Citations
20 Claims
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1. A method comprising:
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a) receiving, by a wireless device, at least one control message from a base station, said at least one control message causing 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 subset comprising said primary cell; and (2) a secondary cell group comprising a second subset of said at least one secondary cell; b) receiving, by said wireless device, a control command for transmission of a random access preamble on a first cell in said plurality of cells, said random access preamble transmitted in parallel with at least one of the following parallel uplink transmissions; i) a first control packet on an uplink control channel of said primary cell; ii) a second packet comprising uplink control information on an uplink data channel of one of said plurality of cells; and iii) at least one third packet on at least one uplink data channel of said plurality of cells; c) determining, by said wireless device, a preamble transmission power for said random access preamble; and d) if a total calculated transmission power exceeds a predefined value, said wireless device obtaining transmission power of said at least one parallel uplink transmission according to the following priorities; i) said random access preamble transmission having a first priority; ii) said first control packet having a second priority lower than said first priority; iii) said second packet having a third priority lower than said second priority; and iv) said at least one third packet having a fourth priority lower than said third priority; and wherein said priorities are employed by said wireless device to reduce or scale linear transmission power of one or more of said at least one parallel transmission such that an updated value of said total calculated transmission power is equal to or less than said predefined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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a) receiving, by a wireless device, at least one control message from a base station, said at least one control message causing in said wireless device; i) configuration of a plurality of cells comprising a primary cell and at least one secondary cell; and 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 subset comprising said primary cell; and (2) a secondary cell group comprising a second subset of said at least one secondary cell; b) receiving, by said wireless device, a control command for transmission of a random access preamble on a first cell in said plurality of cells, said random access preamble transmitted in parallel with at least one of the following parallel uplink transmissions; i) a first control packet on an uplink control channel of said primary cell; ii) a second packet comprising uplink control information on an uplink data channel of one of said plurality of cells; and iii) at least one third packet on at least one uplink data channel of said plurality of cells; c) determining, by said wireless device, a transmission power for said random access preamble; and d) if a total calculated transmission power exceeds a predefined value, said wireless device reducing or scaling linear transmission power of one or more of said at least one parallel uplink transmission according to a predefined rule considering a higher priority for said transmission power of said random access preamble compared with a transmission priority of; i) said first control packet; ii) said second packet; and iii) said at least one third packet. - View Dependent Claims (12, 13, 14, 15)
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16. 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; i) to receive at least one control message from a base station, said at least one control message causing in said wireless device; (1) configuration of a plurality of cells comprising a primary cell and at least one secondary cell; and (2) 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; (a) a primary cell group comprising a first subset of said plurality of cells, said subset comprising said primary cell; and (b) a secondary cell group comprising a second subset of said at least one secondary cell; ii) to receive a control command for transmission of a random access preamble on a first cell in said plurality of cells, said random access preamble transmitted in parallel with at least one of the following parallel uplink transmissions; (1) a first control packet on an uplink control channel of said primary cell; (2) a second packet comprising uplink control information on an uplink data channel of one of said plurality of cells; and (3) at least one third packet on at least one uplink data channel of said plurality of cells; iii) to determine a transmission power for said random access preamble; and iv) if a total calculated transmission power exceeds a predefined value, to reduce or scale linear transmission power of one or more of said at least one parallel uplink transmission according to a predefined rule considering a higher priority for said transmission power of said random access preamble compared with a transmission priority of; (1) said first control packet; (2) said second packet; and (3) said at least one third packet. - View Dependent Claims (17, 18, 19, 20)
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Specification