Method and apparatus for activating or deactivating secondary carriers in time division duplex mobile communication system using carrier aggregation
First Claim
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1. A method for controlling at least one secondary cell by a terminal in a mobile communication system using carrier aggregation (CA), the method comprising:
- receiving, by the terminal, a control message for activating a secondary cell from a base station;
transmitting, by the terminal, a first information using the secondary cell in a first subframe; and
transmitting, by the terminal, a second information using the secondary cell no earlier than the first subframe,wherein the first information includes channel status information (CSI) of the second cell.
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Abstract
A method and an apparatus for activating or deactivating a primary carrier and secondary carriers in a Time Division Duplex Long Term Evolution (TDD LTE) system using carrier aggregation are provided. An apparatus includes an User Equipment employing the method corresponding the operation associated with the activation and deactivation of SCells, which thereby performs communication with eNBs without errors.
11 Citations
14 Claims
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1. A method for controlling at least one secondary cell by a terminal in a mobile communication system using carrier aggregation (CA), the method comprising:
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receiving, by the terminal, a control message for activating a secondary cell from a base station; transmitting, by the terminal, a first information using the secondary cell in a first subframe; and transmitting, by the terminal, a second information using the secondary cell no earlier than the first subframe, wherein the first information includes channel status information (CSI) of the second cell. - View Dependent Claims (2, 3, 4)
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5. An apparatus for controlling at least one secondary cell by a terminal in a mobile communication system using carrier aggregation (CA), the apparatus comprising:
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a transceiver for communicating with another network node; and a controller for receiving a control message for activating a secondary cell from a base station, transmitting a first information using the secondary cell in a first subframe, and transmitting a second information using the secondary cell no earlier than the first subframe, wherein the first information includes channel status information (CSI) of the secondary cell. - View Dependent Claims (6, 7, 8)
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9. A method for controlling at least one secondary cell by a terminal in a mobile communication system using carrier aggregation (CA), the method comprising:
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receiving, by the terminal, a control message for activating a secondary cell from a base station; activating, by the terminal, a first reverse direction transmission of the secondary cell after a duration elapsed after receiving the control message; and activating, by the terminal, a second reverse direction transmission of the secondary cell no earlier than activating the first reverse direction transmission for the secondary cell, wherein the first reverse direction transmission comprises reporting channel status information (CSI) for the secondary cell. - View Dependent Claims (10, 11)
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12. An apparatus for controlling at least one secondary cell by a terminal in a mobile communication system using carrier aggregation (CA), the apparatus comprising:
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a transceiver for communicating other network node; and a controller for receiving a control message for activating a secondary cell from a base station, for activating a first reverse direction transmission of the secondary cell after a duration elapsed after receiving the control message and activating a second reverse direction transmission of the secondary cell no earlier than activating the first reverse direction transmission for the secondary cell, wherein the first reverse direction transmission comprises reporting channel status information (CSI) for the secondary cell. - View Dependent Claims (13, 14)
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Specification