METHOD AND APPARATUS FOR RANDOM ACCESS IN A MULTI-CARRIER WIRELESS COMMUNICATION SYSTEM
First Claim
1. A method of performing a random access procedure by a user equipment to a base station in a multi-carrier supporting wireless communication system, the method comprising:
- determining an uplink component carrier having a highest channel quality by measuring channel quality of at least one uplink component carrier;
selecting a physical random access channel (PRACH) resource on the uplink component carrier having the highest channel quality; and
transmitting a random access preamble to the base station using the selected PRACH resource.
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Abstract
The present invention relates to a wireless communication system, and discloses a method and an apparatus for performing random access in a multi-carrier wireless communication system. According to one embodiment of the present invention, the method in which user equipment carries out a process for random access to a base station in a multi-carrier wireless communication system comprises: a step of measuring the channel qualities of one or more uplink component carriers, and determining the uplink component carrier having the highest channel quality; a step of selecting a physical random access channel (PRACH) resource on the uplink component carrier having the highest channel quality; and a step of transmitting a random access preamble to the base station using the selected PRACH resource.
113 Citations
12 Claims
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1. A method of performing a random access procedure by a user equipment to a base station in a multi-carrier supporting wireless communication system, the method comprising:
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determining an uplink component carrier having a highest channel quality by measuring channel quality of at least one uplink component carrier; selecting a physical random access channel (PRACH) resource on the uplink component carrier having the highest channel quality; and transmitting a random access preamble to the base station using the selected PRACH resource. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A user equipment performing a random access procedure to a base station in a multi-carrier supporting wireless communication system, the user equipment comprising:
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a processor comprising, a medium access control (MAC) layer module controlling a signal transmission on at least one uplink component carrier and a signal reception on at least one downlink component carrier; and a physical layer module functionally connected with the MAC layer module, the physical layer module performing the signal transmission on the at least one uplink component carrier and the signal reception on the at least one downlink component carrier, wherein the processor is configured to; determine an uplink component carrier having a highest channel quality by measuring channel quality of the at least one uplink component carrier; select a physical random access channel (PRACH) resource on the uplink component carrier having the highest channel quality via the MAC layer module; and transmit a random access preamble to the base station via the physical layer module using the selected PRACH resource. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification