METHOD AND APPARATUS FOR CONTROLLING RANDOM ACCESS IN WIRELESS COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION
First Claim
1. A method in a wireless communication system, the method comprising:
- transmitting, by a terminal, a random access preamble on a primary cell or a secondary cell;
determining, by the terminal, that a random access problem is detected;
indicating, by the terminal, the random access problem to upper layers and performing a radio resource control (RRC) connection re-establishment procedure if the random access preamble is transmitted on the primary cell; and
determining, by the terminal, that a random access procedure is unsuccessfully completed if the random access preamble is transmitted on the secondary cell.
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Abstract
A random access procedure control method and apparatus is provided for controlling a random access procedure efficiently in a mobile communication system supporting carrier aggregation. The method for controlling random access procedure of a terminal in a wireless communication system having a primary cell and at least one secondary cell includes initiating a random access procedure in the primary cell and the at least one secondary cells, detecting a random access failure of a terminal performing the random access procedure, determining whether the random access failure is detected in the primary cell or the at least one secondary cell, and determining whether to continue the random access procedure according to a result of the determining of whether the random access failure is detected.
8 Citations
12 Claims
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1. A method in a wireless communication system, the method comprising:
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transmitting, by a terminal, a random access preamble on a primary cell or a secondary cell; determining, by the terminal, that a random access problem is detected; indicating, by the terminal, the random access problem to upper layers and performing a radio resource control (RRC) connection re-establishment procedure if the random access preamble is transmitted on the primary cell; and determining, by the terminal, that a random access procedure is unsuccessfully completed if the random access preamble is transmitted on the secondary cell. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A terminal in a wireless communication system, the terminal comprising:
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a transceiver for communicating signals with the base station; and a controller for controlling to transmit a random access preamble on a primary cell or a secondary cell, to determine that a random access problem is detected, to indicate the random access problem to upper layers and to perform a radio resource control (RRC) connection re-establishment procedure if the random access preamble is transmitted on the primary cell, and to determine that a random access procedure is unsuccessfully completed if the random access preamble is transmitted on the secondary cell. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification