US 10,568,116 B2Granted

Method for transmitting signal in wireless communication system, and apparatus therefor

AssigneeLG Electronics Inc.

InventorsHanjun Park, Joonkui Ahn, Seungmin Lee, Seonwook Kim

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Abstract

A method for transmitting a signal in an unlicensed band in a wireless communication system according to one embodiment of the present invention is performed by a transmission node and comprising the steps of: receiving information about additional channel sensing from a center node; performing channel sensing for signal transmission during a first time period; when the channel is in an unoccupied state as a result of the channel sensing, performing additional channel sensing during a second time period immediately following the first time period according to the information about the additional channel sensing, the length of the second time period being determined according to a transmission priority level of the transmission node; and when the channel is in an unoccupied state as a result of the additional channel sensing, transmitting a signal.

Claims16

Dependent claims

A method of transmitting a signal in an unlicensed band, which is transmitted by a transmission node in a wireless communication system, the method comprising:

receiving information on additional channel sensing from a center node, information on a period of restricted signal transmission and information on a length of a minimum signal transmission period;
performing channel sensing for transmitting the signal within a first time period;
performing the additional channel sensing within a second time period immediately after the first time period according to the information on the additional channel sensing when a channel is in an unoccupied state as a result of the channel sensing;
transmitting the signal when a channel is in an unoccupied state as a result of the additional channel sensing and when the length of the minimum signal transmission period finishes before the period of restricted signal transmission according to the information on the period of restricted signal transmission;
and
reserving the signal when the channel is in the occupied state as a result of the additional channel sensing or when the length of the minimum signal transmission period finishes after the period of restricted signal transmission according to the information on the period of restricted signal transmission,
wherein a length of the second time period and the period of restricted signal transmission are determined according to a transmission priority level of the transmission node,
wherein the period of restricted signal transmission has a length and an interval, and
wherein the period of restricted signal transmission is not for channel sensing of the transmission node.

6 more elements

A transmission node for transmitting a signal in an unlicensed band in a wireless communication system, the transmission node comprising:

a transceiver;
and a processor configured to:
control the transceiver to receive information on additional channel sensing from a center node, information on a period of restricted signal transmission and information on a length of minimum signal transmission period,
perform channel sensing for transmitting the signal within a first time period,
perform the additional channel sensing within a second time period immediately after the first time period according to the information on the additional channel sensing when a channel is in an unoccupied state as a result of the channel sensing,
control the transceiver to transmit the signal when a channel is in an unoccupied state as a result of the additional channel sensing and when the length of the minimum signal transmission period finishes before the period of restricted signal transmission according to the information on the period of restricted signal transmission, and
reserve the signal when the channel is in the occupied state as a result of the additional channel sensing or when the length of the minimum signal transmission period finishes after the period of restricted signal transmission according to the information on the period of restricted signal transmission,
wherein a length of the second time period and the period of restricted signal transmission are determined according to a transmission priority level of the transmission node, and
wherein the period of restricted signal transmission has a length and an interval, and
wherein the period of restricted signal transmission is not for channel sensing of the transmission node.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/552,431Filed 4 Mar 2016 · us provisional application
Priority: 6 Mar 2015
Published: US 2018/0049221 A115 Feb 2018
Granted: 18 Feb 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04W 72/566
Based on priority criteria: of the information or information source or recipient
H04W 48/20
Access restriction ; Network selection; Access point selection: selecting an access point
H04W 72/56
Allocation or scheduling criteria for wireless resources: based on priority criteria
H04W 74/08
Wireless channel access: non-scheduled access, e.g. ALOHA