Method and device for data transmission based on carrier aggregation (CA) technology
First Claim
1. A Carrier Aggregation, CA, based data transmission method, comprising:
- an evolved NodeB, eNB, configuring a user equipment with at least two Time Division Duplex Uplink and Downlink, TDD UL/DL, configuration sets, wherein each TDD UL/DL configuration set comprises at least one cell; and
the eNB configuring a cell respectively in each of the at least two TDD UL/DL configuration sets as an Especial Cell, Ecell;
wherein the eNB configuring a cell in each TDD UL/DL configuration set as an Ecell comprises;
when the TDD UL/DL configuration set comprises only one cell, then configuring the cell as an Ecell; and
when the TDD UL/DL configuration set comprises at least two cells, then configuring a cell with a highest channel quality as an Ecell or configuring a cell subject to a lowest interference as an Ecell or configuring a cell with the highest channel quality and subject to the lowest interference as an Ecell or configuring a cell with a highest or lowest cell index as an Ecell.
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Abstract
The present invention discloses a method and device for data transmission based on carrier aggregation (CA) technology. The method and device are used for ensuring that user equipments can work normally, when the multiple cells aggregated from the user equipments supporting CA technology have different time division duplex (TDD) uplink/downlink (UL/DL) configurations. The method includes: a base station configures at least two time division duplex uplink/downlink carrier TDD UL/DL configuration collections for the user equipments, wherein each TDD UL/DL configuration collection includes at least one cell; the base station respectively configures one cell in each TDD UL/DL configuration collection to be an especial cell (Ecell).
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Citations
17 Claims
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1. A Carrier Aggregation, CA, based data transmission method, comprising:
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an evolved NodeB, eNB, configuring a user equipment with at least two Time Division Duplex Uplink and Downlink, TDD UL/DL, configuration sets, wherein each TDD UL/DL configuration set comprises at least one cell; and the eNB configuring a cell respectively in each of the at least two TDD UL/DL configuration sets as an Especial Cell, Ecell; wherein the eNB configuring a cell in each TDD UL/DL configuration set as an Ecell comprises; when the TDD UL/DL configuration set comprises only one cell, then configuring the cell as an Ecell; and when the TDD UL/DL configuration set comprises at least two cells, then configuring a cell with a highest channel quality as an Ecell or configuring a cell subject to a lowest interference as an Ecell or configuring a cell with the highest channel quality and subject to the lowest interference as an Ecell or configuring a cell with a highest or lowest cell index as an Ecell. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A Carrier Aggregation, CA, based data transmission method, comprising:
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a user equipment determining at least two Time Division Duplex Uplink and Downlink, TDD UL/DL, configuration sets, which are configured for the user equipment by an eNB, according to a notification from the eNB, wherein each TDD UL/DL configuration set comprises at least one cell; the user equipment configuring a cell respectively in each of the at least two TDD UL/DL configuration sets as an Especial Cell, Ecell, according to the notification from the eNB or a rule predefined by the eNB and the user equipment; and the user equipment transmitting data with the eNB based on each of the at least TDD UL/DL configuration set and its corresponding Ecell; wherein when the TDD UL/DL configuration set comprises only one cell, then the cell is configured as an Ecell; and when the TDD UL/DL configuration set comprises at least two cells, then a cell with a highest channel quality is configured as an Ecell, or a cell subject to a lowest interference is configured as an Ecell, or a cell with the highest channel quality and subject to the lowest interference is configured as an Ecell, or a cell with a highest or lowest cell index is configured as an Ecell. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A Carrier Aggregation, CA, based data transmission apparatus, comprising:
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a first configuring unit configured to configure a user equipment with at least two Time Division Duplex Uplink and Downlink, TDD UL/DL, configuration sets, wherein each TDD UL/DL configuration set comprises at least one cell; and a second configuring unit configured to configure a cell respectively in each of the at least two TDD UL/DL configuration sets as an Especial Cell, Ecell; wherein the second configuring unit configures a cell in each TDD UL/DL configuration set as an Ecell by, when the TDD UL/DL configuration set comprises only one cell, configuring the cell as an Ecell; and
when the TDD UL/DL configuration set comprises at least two cells, configuring a cell with a highest channel quality as an Ecell or configuring a cell subject to a lowest interference as an Ecell or configuring a cell with the highest channel quality and subject to the lowest interference as an Ecell or configuring a cell with a highest or lowest cell index in the TDD UL/DL configuration set as an Ecell. - View Dependent Claims (14, 15, 16, 17)
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Specification