Title:
APPARATUS AND METHOD FOR RECEIVING A CONTROL CHANNEL IN A MULTI-COMPONENT CARRIER SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/173424
Kind Code:
A2
Abstract:
The present description relates to an apparatus and method for receiving a control channel in a multi-component carrier system. The method for performing random access disclosed in the present description comprises the steps of: transmitting a random access preamble to a base station from an activated sub-serving cell; monitoring physical downlink control channel candidates during a response window one the basis of a certain aggregation in a temporary search space in a control region of the activated sub-serving cell, wherein the control region consists of a group of control channel elements; and adjusting an uplink time of the activated sub-serving cell according to a time advance command indicated by a random access response when the random access response, including a random access identifier corresponding to the random access preamble, is received in the response window. According to the present invention, the base station may reduce the overhead of a control region of a main serving cell, and the terminal may reduce the number of detection trials performed according to blind decoding for monitoring a downlink control channel.
More Like This:
Inventors:
KWON KI BUM (KR)
AHN JAE HYUN (KR)
HONG SUNG KWON (KR)
AHN JAE HYUN (KR)
HONG SUNG KWON (KR)
Application Number:
PCT/KR2012/004733
Publication Date:
December 20, 2012
Filing Date:
June 15, 2012
Export Citation:
Assignee:
PANTECH CO LTD (KR)
KWON KI BUM (KR)
AHN JAE HYUN (KR)
HONG SUNG KWON (KR)
KWON KI BUM (KR)
AHN JAE HYUN (KR)
HONG SUNG KWON (KR)
International Classes:
H04W74/08; H04B7/26; H04J11/00; H04W52/02
Foreign References:
| KR20100114852A | 2010-10-26 | |||
| KR20110020170A | 2011-03-02 | |||
| US20100322173A1 | 2010-12-23 |
Attorney, Agent or Firm:
OH, JAE EON (KR)
오재언 (KR)
오재언 (KR)
Download PDF:
Claims: