Carrier grouping in multicarrier wireless networks
First Claim
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1. A method comprising:
- a) transmitting, by a base station to a wireless device, at least one first radio resource control (RRC) message to cause 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 a cell group index to a cell in said plurality of cells, said cell group index identifying 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) transmitting, by said base station to said wireless device, at least one second RRC message to modify a first cell group index of a first cell in said wireless device, wherein;
i) if said first cell is said primary cell, said at least one second RRC message is configured to cause said wireless device to reconfigure said primary cell as a secondary cell with an updated first cell group index different from said first cell group index, said at least one second RRC message comprising mobility control information; and
ii) if said first cell is a secondary cell, said at least one second RRC message configured to cause said wireless device to release said secondary cell and add said secondary cell with an updated first cell group index different from said first cell group index, said at least one second RRC message not comprising mobility control information.
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Abstract
A base station transmits an RRC message to modify a first cell group index of a first cell. If the first cell is a primary cell, the RRC message reconfigures the primary cell as a secondary cell with an updated first cell group index and the RRC message comprises mobility control information. If the first cell is a secondary cell, the RRC message releases the secondary cell and adds the secondary cell with an updated first cell group index without employing mobility control information.
84 Citations
20 Claims
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1. A method comprising:
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a) transmitting, by a base station to a wireless device, at least one first radio resource control (RRC) message to cause 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 a cell group index to a cell in said plurality of cells, said cell group index identifying 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) transmitting, by said base station to said wireless device, at least one second RRC message to modify a first cell group index of a first cell in said wireless device, wherein; i) if said first cell is said primary cell, said at least one second RRC message is configured to cause said wireless device to reconfigure said primary cell as a secondary cell with an updated first cell group index different from said first cell group index, said at least one second RRC message comprising mobility control information; and ii) if said first cell is a secondary cell, said at least one second RRC message configured to cause said wireless device to release said secondary cell and add said secondary cell with an updated first cell group index different from said first cell group index, said at least one second RRC message not comprising mobility control information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. 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 first radio resource control (RRC) message configured to cause 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 a cell group index to a cell in said plurality of cells, said cell group index identifying a cell group in a plurality of cell groups, said plurality of cell groups comprising a primary cell group and a secondary cell group; and ii) transmit to said wireless device at least one second RRC message to modify a first cell group index of a first cell in said wireless device, wherein; (1) if said first cell is said primary cell, said at least one second RRC message is configured to cause said wireless device to reconfigure said primary cell as a secondary cell with an updated first cell group index different from said first cell group index, said at least one second RRC message comprising mobility control information; and (2) if said first cell is a secondary cell, said at least one second RRC message configured to cause said wireless device to release said secondary cell and add said secondary cell with an updated first cell group index different from said first cell group index, said at least one second RRC message not comprising mobility control information. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method comprising:
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a) receiving, by a wireless device from a base station, at least one first radio resource control (RRC) message to cause 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 a cell group index to a cell in said plurality of cells, said cell group index identifying a cell group in a plurality of cell groups, said plurality of cell groups comprising a primary cell group and a secondary cell group; and b) receiving, by said wireless device from said base station, at least one second RRC message to modify a first cell group index of a first cell in said wireless device, wherein; i) if said first cell is said primary cell, said at least one second RRC message is configured to cause said wireless device to reconfigure said primary cell as a secondary cell with an updated first cell group index different from said first cell group index, said at least one second RRC message comprising mobility control information; and ii) if said first cell is a secondary cell, said at least one second RRC message configured to cause said wireless device to release said secondary cell and add said secondary cell with an updated first cell group index different from said first cell group index, said at least one second RRC message not comprising mobility control information. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification