Method and apparatus for transmitting/receiving data on multiple carriers in mobile communication system
First Claim
1. A random access method of a terminal in a mobile communication system supporting carrier aggregation, the method comprising:
- transmitting, on a primary cell, a first random access preamble;
receiving, on the primary cell, a first random access response message corresponding to the first random access preamble;
transmitting, on the primary cell, a first physical uplink shared channel (PUSCH) according to a first uplink grant included in the first random access response message;
transmitting, on a secondary cell, a second random access preamble;
receiving, on the primary cell, a second random access response message corresponding to the second random access preamble;
determining a transmission power for a second PUSCH based on a transmission power control (TPC) command included in the second random access response; and
transmitting, on the secondary cell, the second PUSCH according to the determined transmission power and a second uplink grant included in the second random access response message.
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Abstract
A data transmission method and an apparatus to communicate data on multiple carriers in the mobile communication system are provided. A random access method of a terminal in a mobile communication system including primary and secondary cells operating on multiple carriers according to the present invention includes communicating data after random access in the primary cell, receiving, when the random access is triggered in the secondary cell, information for use in the secondary cell random access from the primary cell, transmitting a preamble in the secondary cell based on the received information, monitoring the primary cell to receive a Random Access Response for the secondary cell, and applying, when the Random Access Response for the secondary cell is received, the information carried in the Random Access Response to the secondary cell in which the preamble has been transmitted.
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Citations
20 Claims
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1. A random access method of a terminal in a mobile communication system supporting carrier aggregation, the method comprising:
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transmitting, on a primary cell, a first random access preamble; receiving, on the primary cell, a first random access response message corresponding to the first random access preamble; transmitting, on the primary cell, a first physical uplink shared channel (PUSCH) according to a first uplink grant included in the first random access response message; transmitting, on a secondary cell, a second random access preamble; receiving, on the primary cell, a second random access response message corresponding to the second random access preamble; determining a transmission power for a second PUSCH based on a transmission power control (TPC) command included in the second random access response; and transmitting, on the secondary cell, the second PUSCH according to the determined transmission power and a second uplink grant included in the second random access response message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A terminal for performing a random access in a mobile communication system supporting carrier aggregation, the terminal comprising:
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a transceiver configured to transmit and receive a signal; and a controller configured to; transmit, on a primary cell, a first random access preamble, receive, on the primary cell, a first random access response message corresponding to the first random access preamble, transmit, on the primary cell, a first physical uplink shared channel (PUSCH) according to a first uplink grant included in the first random access response message, transmit, on a secondary cell, a second random access preamble, receive, on the primary cell, a second random access response message corresponding to the second random access preamble, determine a transmission power for a second PUSCH based on a transmission power control (TPC) command included in the second random access response, and transmit, on the secondary cell, the second PUSCH according to the determined transmission power and a second uplink grant included in the second random access response message. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A base station for supporting a random access in a mobile communication system supporting carrier aggregation, the base station comprising:
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a transceiver configured to transmit and receive a signal; and a controller configured to; receive, on a primary cell, a first random access preamble, transmit, on the primary cell, a first random access response message corresponding to the first random access preamble, receive, on the primary cell, a first physical uplink shared channel (PUSCH) according to a first uplink grant included in the first random access response message, receive, on a secondary cell, a second random access preamble from a terminal, transmit, on the primary cell, a second random access response message, including a transmission power control (TPC) command, corresponding to the second random access preamble to the terminal, and receive, on the secondary cell, a second PUSCH according to a transmission power of the terminal determined based on the TPC command and a second uplink grant included in the second random access response message. - View Dependent Claims (18, 19, 20)
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Specification