Method and apparatus for performing random access process in wireless communication system
First Claim
1. A method for receiving control information by a user equipment (UE) in a wireless communication system, the method comprising:
- receiving, via a primary cell (PCell) of a first timing advance group (TAG), a random access response (RAR) including uplink resource allocation information for a physical uplink shared channel (PUSCH);
transmitting, via a first secondary cell (SCell) of a second TAG, a physical uplink shared channel (PUSCH) signal based on the uplink resource allocation information; and
receiving, via a second SCell configured to schedule the first SCell, a physical hybrid ARQ channel (PHICH) signal including acknowledgement information for the PUSCH signal,wherein the first and second SCells are different from each other, and each of the first and second TAGs has a respective timing advance value applied to uplink transmission.
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Accused Products
Abstract
The present invention relates to a wireless communication system. In detail, the present invention is a method in which user equipment for which a plurality of cells is constituted receives control information in a carrier aggregation-based wireless communication system, and an apparatus for the method. The method comprises: a step of receiving, through a first cell, uplink resource allocation information for a second cell; a step of transmitting an uplink signal on the second cell using the uplink resource allocation information; and a step of receiving response information to the uplink signal. The response information is received via a specific cell rather than the first cell when the uplink signal is transmitted by a random access process, and the response information is received via the first cell when the uplink signal is transmitted by a non-random access process.
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Citations
10 Claims
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1. A method for receiving control information by a user equipment (UE) in a wireless communication system, the method comprising:
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receiving, via a primary cell (PCell) of a first timing advance group (TAG), a random access response (RAR) including uplink resource allocation information for a physical uplink shared channel (PUSCH); transmitting, via a first secondary cell (SCell) of a second TAG, a physical uplink shared channel (PUSCH) signal based on the uplink resource allocation information; and receiving, via a second SCell configured to schedule the first SCell, a physical hybrid ARQ channel (PHICH) signal including acknowledgement information for the PUSCH signal, wherein the first and second SCells are different from each other, and each of the first and second TAGs has a respective timing advance value applied to uplink transmission. - View Dependent Claims (2, 3, 4, 5)
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6. A user equipment (UE) configured to receive control information in a wireless communication system, the UE comprising:
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a radio frequency (RF) unit; and a processor operatively connected to the RF unit and configured to; receive, via a primary cell(PCell) of a first timing advance group (TAG), a random access response (RAR) including uplink resource allocation information; transmit, via a first secondary cell (SCell) of a second TAG, a physical uplink shared channel (PUSCH) signal based on the uplink resource allocation information; and receive via a second SCell configured to schedule the first SCell, a physical hybrid ARQ channel (PHICH) signal including acknowledgement information for the PUSCH, wherein the first and second SCells are different from each other, and each of the first and second TAGs has a respective timing advance value applied to uplink transmission. - View Dependent Claims (7, 8, 9, 10)
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Specification