Title:
METHOD FOR PERFORMING LBT IN WIRELESS ACCESS SYSTEM SUPPORTING UNLICENSED BAND, AND APPARATUS SUPPORTING SAME
Document Type and Number:
WIPO Patent Application WO/2016/122249
Kind Code:
A3
Abstract:
The present invention relates to a wireless access system supporting an unlicensed band, and provides methods for performing an LBT operation to efficiently perform carrier sensing and apparatuses supporting the same. As one embodiment of the present invention, a method for performing, by a terminal in a wireless access system supporting an unlicensed band, listen before talk (LBT) in order to transmit an uplink signal comprises the steps in which: the terminal performs an initial LBT in an unlicensed band cell (U cell); and the terminal performs an expanded LBT if the U cell is in a busy state as a result of performing the initial LBT; and the terminal transmits the uplink signal if the U cell is in an idle state as a result of performing the initial LBT, and further may comprise a step in which the terminal transmits the uplink signal if the U cell is in an idle state as a result of performing the expanded LBT.
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Inventors:
KIM SEONWOOK (KR)
AHN JOONKUI (KR)
KIM BYOUNGHOON (KR)
LEE SEUNGMIN (KR)
PARK HANJUN (KR)
AHN JOONKUI (KR)
KIM BYOUNGHOON (KR)
LEE SEUNGMIN (KR)
PARK HANJUN (KR)
Application Number:
PCT/KR2016/001003
Publication Date:
September 15, 2016
Filing Date:
January 29, 2016
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04W74/08; H04W72/12
Foreign References:
| US20140341207A1 | 2014-11-20 |
Other References:
ERICSSON: "Details of Listen-Before-Talk for LAA", 3GPP TSG RAN WG1 MEETING #79, 8 November 2014 (2014-11-08), San Francisco, USA, XP055312928, Retrieved from the Internet
LG ELECTRONICS: "Data Scheduling and Control Signaling in LAA, R1-144904", 3GPP TSG RAN WG1 MEETING #79, 8 November 2014 (2014-11-08), San Francisco, USA, XP050885566, Retrieved from the Internet
NOKIA NETWORKS ET AL.: "On Listen Before Talk and Channel Access, R1-145003", 3GPP TSG RAN WG1 MEETING #79, 8 November 2014 (2014-11-08), San Francisco, USA, XP050895504, Retrieved from the Internet
CATT: "Listen before Talk for LAA, R1-144625", 3GPP TSG RAN WG1 MEETING #79, 8 November 2014 (2014-11-08), San Francisco, USA, XP050885328, Retrieved from the Internet
LG ELECTRONICS: "Data Scheduling and Control Signaling in LAA, R1-144904", 3GPP TSG RAN WG1 MEETING #79, 8 November 2014 (2014-11-08), San Francisco, USA, XP050885566, Retrieved from the Internet
NOKIA NETWORKS ET AL.: "On Listen Before Talk and Channel Access, R1-145003", 3GPP TSG RAN WG1 MEETING #79, 8 November 2014 (2014-11-08), San Francisco, USA, XP050895504, Retrieved from the Internet
CATT: "Listen before Talk for LAA, R1-144625", 3GPP TSG RAN WG1 MEETING #79, 8 November 2014 (2014-11-08), San Francisco, USA, XP050885328, Retrieved from the Internet
Attorney, Agent or Firm:
KIM, Yong In et al. (7th Floor 82, Olympic-ro,Songpa-ku, Seoul, KR)
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